Frame Relay Signal Flow
Hi to all the experts here, I am learning the Frame Relay basic theoretically. Just wanna know, packets are assembled at router, transmit through indicated PVC. At the FRP, does the individual packets re-assembled again to meet IPX packet? What does IPX packet relates with the previous frame? Thanks ..
Packets are layer three. Frame Relay is Layer Two (like Ethernet) and so they use Frames.
Routers to not assemble or reassemble anything, they remove the packet from the frame at the ingress (incoming) interface, make decisions based on what it sees in the header of the packet, then (assuming all is correct) it puts the packet into a new frame and sends it out the appropriate egress (exit) interface.
Frames (even frame relay frames) are Layer Two, they deliver packets (Layer Three) that will be used to reconstruct segments (Layer Four) and the segments are passed up the stack, possibly interpreted or manipulated by the other layers as it passes through, to ultimately be delivered through the calling process of the application.
The Frames are switched, the packets are routed, because there is no "network" information in a Frame; "network" information is determined from the (in this case) IP (or IPX) address and mask in the packet.
The Frame Relay devices in the "cloud" have settings (look-up tables) that pass the frame relay frame from ingress PVC to egress PVC from the originating end to the destination end of the network.
Good Luck
Scott
Similar Messages
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ASR1K 5xE1 MFR Frame relay traffic not forwarding in one direction
Dear Techies,
Hope all is well !
Im doing this inter-op testing with Alcatel device for frame-relay and MFRs and got stuck at this situation which is actually mind boggling and I think i might be missing something "silly" :-(
Its a simple setup of
1. My ASR 1002-X with a LAN (Gig0/0/0) port is connected to a traffic generator.(ixia).
2. ASR WAN port is a 5xE1 bundled into a MFR circuit.
3. WAN link goes to a Alcatel box giving me my FR-DCE with E1s over MFR.
Issue is , I can send traffic to max throughput with flow initiated from LAN to WAN bit NOT the reverse flow initiated from WAN side to LAN port. I see traffic coming into my 5xE1s (1.8 mbps each) but the traffic just wont go to the LAN side , somewhere it gets "stuck" or "dropped".
PING works fine from both sides.......but sending traffic is not possible !!
ASR CONFIG
controller SONET 0/3/0
framing sdh
clock source line
aug mapping au-4
au-4 1 tug-3 1
mode c-12
tug-2 1 e1 1 unframed
tug-2 1 e1 2 unframed
tug-2 1 e1 3 unframed
tug-2 2 e1 1 unframed
tug-2 2 e1 2 unframed
tug-2 2 e1 3 unframed
au-4 1 tug-3 2
mode c-12
tug-2 1 e1 1 unframed
tug-2 1 e1 2 unframed
tug-2 1 e1 3 unframed
au-4 1 tug-3 3
mode c-12
interface MFR1
no ip address
encapsulation frame-relay IETF
load-interval 30
frame-relay multilink bid 10MB-PiPe
frame-relay multilink bandwidth-class a
frame-relay lmi-type ansi
interface MFR1.1 point-to-point
ip address 10.10.17.2 255.255.255.0
frame-relay interface-dlci 100
interface GigabitEthernet0/0/0
no ip address
load-interval 30
negotiation auto
interface GigabitEthernet0/0/0.110
encapsulation dot1Q 110
ip address 11.11.11.1 255.255.255.0
interface Serial0/3/0.1/1/1/1:0
no ip address
encapsulation frame-relay MFR1
frame-relay multilink lid First-Link
interface Serial0/3/0.1/1/1/2:0
no ip address
encapsulation frame-relay MFR1
frame-relay multilink lid Second-Link
interface Serial0/3/0.1/1/1/3:0
no ip address
encapsulation frame-relay MFR1
frame-relay multilink lid Third-Link
interface Serial0/3/0.1/1/2/1:0
no ip address
encapsulation frame-relay MFR1
frame-relay multilink lid Fourth-Link
interface Serial0/3/0.1/1/2/2:0
no ip address
encapsulation frame-relay MFR1
frame-relay multilink lid Fifth-Link
SDH_FR#sh frame-relay mul
SDH_FR#sh frame-relay multilink
Bundle: MFR1, State = up, class = A, fragmentation disabled
BID = 10MB-PiPe
Bundle links:
Serial0/3/0.1/1/1/1:0, HW state = up, link state = Up, LID = First-Link
Serial0/3/0.1/1/2/2:0, HW state = up, link state = Up, LID = Fifth-Link
Serial0/3/0.1/1/2/1:0, HW state = up, link state = Up, LID = Fourth-Link
Serial0/3/0.1/1/1/3:0, HW state = up, link state = Up, LID = Third-Link
Serial0/3/0.1/1/1/2:0, HW state = up, link state = Up, LID = Second-Link
SDH_FR#
SDH_FR#
SDH_FR#
SDH_FR#sh fram
SDH_FR#sh frame-relay pvc 100
PVC Statistics for interface MFR1 (Frame Relay DTE)
DLCI = 100, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = MFR1.1
input pkts 8045 output pkts 8044 in bytes 515748
out bytes 527920 dropped pkts 0 in pkts dropped 0
out pkts dropped 0 out bytes dropped 0
in FECN pkts 0 in BECN pkts 0 out FECN pkts 0
out BECN pkts 0 in DE pkts 0 out DE pkts 0
out bcast pkts 0 out bcast bytes 0
5 minute input rate 1000 bits/sec, 2 packets/sec
5 minute output rate 1000 bits/sec, 2 packets/sec
pvc create time 01:07:58, last time pvc status changed 01:07:58
fragment type end-to-end fragment size 1400
SDH_FR#
SDH_FR#
SDH_FR#
SDH_FR#
SDH_FR#
SDH_FR#
SDH_FR#ping 10.10.17.1-------------------------------------------------------------------------- THIS IS ALCATEL SIDE FROM TRAFFIC HAS TO COME.
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.10.17.1, timeout is 2 seconds:
Success rate is 100 percent (5/5), round-trip min/avg/max = 3/3/4 ms
SDH_FR#
SDH_FR#
SDH_FR#sh frame-relay traffic
Frame Relay statistics:
ARP requests sent 0, ARP replies sent 0
ARP request recvd 0, ARP replies recvd 0
SDH_FR#What is the access rate of the head end?
Are you using a codec other than G711?
How many total sites are involved, what protocols are you running?
From the math, 32K is not enough CIR to ensure 4 calls proper Bandwidth. At what point is the voice degrading, is is choppy missing message, sound, jitter, echo or after 1, 2 or 3 calls.
Even if you are using G729a, voice packets could be dropped. Not to say that it is here, but look at the FRS stats to see ip packets are being dropped.
Traffic shaping is always recommended, rtp header compression will help, but the trade-off is around a 20% CPU hit.
If you implement traffic shapping , it needs to be done throughout the network as queueing delays related to data on other slow links and at the headend (specifically here) could be the cause of the distortion alone. I would at least try traffic shapping first, then if the problem doen't go away, increase CIR for Voice, if there are still issues, implement LLQ. -
Map-class frame-relay , policy map
Does a service-policy output have to be applied to an interface for qos to work?
here is the config but there is nothing applied to the serial interface..
Thanks for your help
policy-map 256/128KVoice
class 256/128KVoice
priority 112
class class-default
fair-queue
map-class frame-relay 256/128KVoice
frame-relay cir 128000
frame-relay bc 1280
frame-relay be 600
frame-relay mincir 128000
no frame-relay adaptive-shaping
frame-relay fair-queue
frame-relay fragment 150
frame-relay ip rtp priority 16384 16380 210
interface Serial0/0
bandwidth 1544
ip address xxx.xxx.xxx.xxx 255.255.255.255
ip route-cache flow
no fair-queue
service-module t1 timeslots 1-24Hello,
Will QOS will work in this way where class is put on WAN interface where it should be service policy.
router#sh run interface Se0/0/0.1
Building configuration...
Current configuration : 239 bytes
interface Serial0/0/0.1 point-to-point
bandwidth 2048
ip address XXXX
ip nat outside
frame-relay interface-dlci 555
class COS-OUT-S0/0/0.1
end
COS-OUT-S0/0/0.1 is defined as policy map with class of voice and video.
When checking on WAN int #sh policy-map interface Se0/0/0.1 , can see output of service policy input/output with policy map recpective classes and packets match entries.Is QOS working with this configuration?
Appreciate any input on this.
Regards,
Brajesh. -
No modem conection with voip over frame-relay
I'm trying to connect two modems through voip over frame-relay network using the modem passthrough command but that is no working. The voice calls is operating very well but the modems no connect between them. I'm using G-729 codec with ip header compression and data fragment in 80 bytes.
There are some know issues with cisco dsps and V.90+ modems, but we have been able to get most modems to work correctly accross our network. If you are using g729 for all other voice calls you will want to use the modem passthrough command to have both gw's turn to modem passthrough. I typically set up each dial peer with the specific commands, since I have found the global commands are not consistently applied. Here is a sample dial peer config....
dial-peer voice 3 voip
description Default voip peer
preference 1
incoming called-number .T
destination-pattern .T
progress_ind setup enable 3
progress_ind connect enable 8
modem passthrough nse codec g711ulaw
voice-class codec 1
session protocol sipv2
session target sip-server
dtmf-relay rtp-nte
fax rate disable
fax protocol pass-through g711ulaw
ip qos dscp cs3 signaling
no vad
Some of these commands are specific to the isdn signaling set up we have at this site. Also, we are using sip hence the sip session target. But the modem and fax passthrough commands are pretty much universal.
Also, some of those commands are not supported until 12.2.13. You might want to think about an ios upgrade. -
Hi,
Customer of me has several sites connected with leased lines. The leased lines have frame-relay encapsulation (frame-relay back-to-back)
The line has two pvc's configured, one for voice and one for data. The voice PVC works fine. On the data pvc we want to put some QoS.
Here is the partial configuration:
interface Serial0
bandwidth 2000
no ip address
encapsulation frame-relay
no ip route-cache cef
ip route-cache flow
no ip mroute-cache
frame-relay intf-type dce
interface Serial0.1 point-to-point
ip address 10.xx.xx.1 255.255.255.252
no ip mroute-cache
frame-relay interface-dlci 120
interface Serial0.2 point-to-point
ip address 10.0.0.1 255.255.255.252
no ip mroute-cache
frame-relay interface-dlci 100
class VOICE
vofr cisco
map-class frame-relay VOICE
frame-relay cir 512000
frame-relay voice bandwidth 256000
frame-relay fragment 320
frame-relay fair-queue
Question is can I just apply a service policy out to the data DLCI or doi i also have to enable frame-relay traffic shaping?
Thanks,
JHThe disadvantage of shaping is that it will actually limit you bandwidth. That is, you won't be able to use the circuit at full capacity, because of the artificial limitation induced by shaping. This is particularly true for a situation like you where the actual circuits is a leased line, and not a FR network.
A better approach would be to reconfigure for simple hdlc encap, and run VoIP instead. This way, you would have all the QOS features you need for voice and data, and be able to use the full capacity with a much simpler configuration.
Actually, even if you want to retain the FR encapsulation and the voice over FR approach, still using a single PVC would be better, for the same reasons given above.
Hope this helps, please rate post if it does! -
Greetings!
I'm attempting to set up a Frame Relay (FR) lab with a few routers, and I'm running into some trouble. The router I'm using as the FR switch is a 3825, which has two VWIC2-2MFT-T1/E1 cards installed. The three other routers are 1841s with WIC-1DSU-T1 cards.
I'm getting the following message, when trying to apply clocking to the FR controllers: "This command applies only to DCE interfaces". I read elsewhere that the "V" in "VWIC2" applies to Voice, and that DCE simply can't be done on them. I'm very new to all of this, so I hope this isn't a ridiculous question: could I uninstall the VWICs from the FR router, put them on the 1841s, and then put the three WIC-1DSUs on the FR switch to make it work? Again, I hope that's not utterly silly, and it's worth asking.
If I can't pull this off, may I get some suggestions?
Thanks, in advance!Thanks very much for the breakdown, rhirani! I made a few T1-crossover cables to connect the 1841s, so that's what's being used. I ran "sh controller", and the FR switch gave me a ton of information:
FR#sh controller T1
T1 0/0/0 is down.
Applique type is Channelized T1
Cablelength is long 0db
Transmitter is sending remote alarm.
Receiver has loss of signal.
alarm-trigger is not set
Soaking time: 3, Clearance time: 10
AIS State:Clear LOS State:Clear LOF State:Clear
Version info Firmware: 20071011, FPGA: 13, spm_count = 0
Framing is ESF, Line Code is B8ZS, Clock Source is Line.
CRC Threshold is 320. Reported from firmware is 320.
Data in current interval (147 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 147 Unavail Secs
Total Data (last 67 15 minute intervals):
0 Line Code Violations, 0 Path Code Violations,
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins,
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 60300 Unavail Secs
T1 0/0/1 is up.
Applique type is Channelized T1
Cablelength is long 0db
No alarms detected.
alarm-trigger is not set
Soaking time: 3, Clearance time: 10
AIS State:Clear LOS State:Clear LOF State:Clear
Version info Firmware: 20071011, FPGA: 13, spm_count = 0
Framing is ESF, Line Code is B8ZS, Clock Source is Line.
CRC Threshold is 320. Reported from firmware is 320.
Data in current interval (149 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Total Data (last 67 15 minute intervals):
0 Line Code Violations, 0 Path Code Violations,
2 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins,
2 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 10 Unavail Secs
T1 0/1/0 is up.
Applique type is Channelized T1
Cablelength is long 0db
No alarms detected.
alarm-trigger is not set
Soaking time: 3, Clearance time: 10
AIS State:Clear LOS State:Clear LOF State:Clear
Version info Firmware: 20071011, FPGA: 13, spm_count = 0
Framing is ESF, Line Code is B8ZS, Clock Source is Line.
CRC Threshold is 320. Reported from firmware is 320.
Data in current interval (146 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Total Data (last 67 15 minute intervals):
0 Line Code Violations, 0 Path Code Violations,
2 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins,
2 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 11 Unavail Secs
T1 0/1/1 is up.
Applique type is Channelized T1
Cablelength is long 0db
No alarms detected.
alarm-trigger is not set
Soaking time: 3, Clearance time: 10
AIS State:Clear LOS State:Clear LOF State:Clear
Version info Firmware: 20071011, FPGA: 13, spm_count = 0
Framing is ESF, Line Code is B8ZS, Clock Source is Line.
CRC Threshold is 320. Reported from firmware is 320.
Data in current interval (148 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
2 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
2 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Total Data (last 67 15 minute intervals):
0 Line Code Violations, 0 Path Code Violations,
607 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins,
607 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 11 Unavail Secs
I also ran a show-controller for one of the serial interfaces, in case it's at all relevant, here:
FR#sh controller ser0/0/1:0
Interface Serial0/0/1:0
Hardware is GT96Kidb at 0x706FF898, driver data structure at 0x70700424
wic_info 0x0
There was a *lot* more that printed out for the serial interface, but I didn't paste all of it.
I hope this is enough to tell..... -
Can't ping routers across point-to-point frame-relay
'evening,
Really basic setup. Designed with Packet Tracer, trying to ping routers across a point-to-point frame-relay. I've designed this according to three different training sources who all say the same thing. Yet, all pings failed.
The shows:
R1
R1#copy run st
Destination filename [startup-config]?
Building configuration...
[OK]
R1#show run
Building configuration...
Current configuration : 883 bytes
version 12.2
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
hostname R1
no ip domain-lookup
interface FastEthernet0/0
no ip address
duplex auto
speed auto
shutdown
interface FastEthernet0/1
no ip address
duplex auto
speed auto
shutdown
interface Serial1/0
no ip address
encapsulation frame-relay
interface Serial1/0.12 point-to-point
ip address 192.168.12.1 255.255.255.0
frame-relay interface-dlci 102
interface Serial1/0.13 point-to-point
ip address 192.168.13.1 255.255.255.0
frame-relay interface-dlci 103
ip classless
end
R1#show frame-relay lmi
LMI Statistics for interface Serial1/0 (Frame Relay DTE) LMI TYPE = CISCO
Invalid Unnumbered info 0 Invalid Prot Disc 0
Invalid dummy Call Ref 0 Invalid Msg Type 0
Invalid Status Message 0 Invalid Lock Shift 0
Invalid Information ID 0 Invalid Report IE Len 0
Invalid Report Request 0 Invalid Keep IE Len 0
Num Status Enq. Sent 638 Num Status msgs Rcvd 638
Num Update Status Rcvd 0 Num Status Timeouts 16
LMI Statistics for interface Serial1/0.12 (Frame Relay DTE) LMI TYPE = CISCO
Invalid Unnumbered info 0 Invalid Prot Disc 0
Invalid dummy Call Ref 0 Invalid Msg Type 0
Invalid Status Message 0 Invalid Lock Shift 0
Invalid Information ID 0 Invalid Report IE Len 0
Invalid Report Request 0 Invalid Keep IE Len 0
Num Status Enq. Sent 0 Num Status msgs Rcvd 0
Num Update Status Rcvd 0 Num Status Timeouts 16
LMI Statistics for interface Serial1/0.13 (Frame Relay DTE) LMI TYPE = CISCO
Invalid Unnumbered info 0 Invalid Prot Disc 0
Invalid dummy Call Ref 0 Invalid Msg Type 0
Invalid Status Message 0 Invalid Lock Shift 0
Invalid Information ID 0 Invalid Report IE Len 0
Invalid Report Request 0 Invalid Keep IE Len 0
Num Status Enq. Sent 0 Num Status msgs Rcvd 0
Num Update Status Rcvd 0 Num Status Timeouts 16
R1#show frame-relay map
Serial1/0.12 (up): point-to-point dlci, dlci 102, broadcast, status defined, active
Serial1/0.13 (up): point-to-point dlci, dlci 103, broadcast, status defined, active
R1#show frame-relay pvc
PVC Statistics for interface Serial1/0 (Frame Relay DCE)
DLCI = 102, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial1/0.12
input pkts 14055 output pkts 32795 in bytes 1096228
out bytes 6216155 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 32795 out bcast bytes 6216155
DLCI = 103, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial1/0.13
input pkts 14055 output pkts 32795 in bytes 1096228
out bytes 6216155 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 32795 out bcast bytes 6216155
R2
R2#SHOW RUN
Building configuration...
Current configuration : 772 bytes
version 12.2
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
hostname R2
no ip domain-lookup
interface Serial1/0
no ip address
encapsulation frame-relay
interface Serial1/0.12 point-to-point
ip address 192.168.12.2 255.255.255.0
frame-relay interface-dlci 201
ip classless
end
R2#show fr map
Serial1/0.12 (up): point-to-point dlci, dlci 201, broadcast, status defined, active
R2#show fr pvc
PVC Statistics for interface Serial1/0 (Frame Relay DTE)
DLCI = 201, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial1/0.12
input pkts 14055 output pkts 32795 in bytes 1096228
out bytes 6216155 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 32795 out bcast bytes 6216155
R2#show fr lmi
LMI Statistics for interface Serial1/0 (Frame Relay DTE) LMI TYPE = CISCO
Invalid Unnumbered info 0 Invalid Prot Disc 0
Invalid dummy Call Ref 0 Invalid Msg Type 0
Invalid Status Message 0 Invalid Lock Shift 0
Invalid Information ID 0 Invalid Report IE Len 0
Invalid Report Request 0 Invalid Keep IE Len 0
Num Status Enq. Sent 679 Num Status msgs Rcvd 678
Num Update Status Rcvd 0 Num Status Timeouts 16
LMI Statistics for interface Serial1/0.12 (Frame Relay DTE) LMI TYPE = CISCO
Invalid Unnumbered info 0 Invalid Prot Disc 0
Invalid dummy Call Ref 0 Invalid Msg Type 0
Invalid Status Message 0 Invalid Lock Shift 0
Invalid Information ID 0 Invalid Report IE Len 0
Invalid Report Request 0 Invalid Keep IE Len 0
Num Status Enq. Sent 0 Num Status msgs Rcvd 0
Num Update Status Rcvd 0 Num Status Timeouts 16
R3
R3#show run
Building configuration...
Current configuration : 772 bytes
version 12.2
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
hostname R3
interface Serial1/0
no ip address
encapsulation frame-relay
interface Serial1/0.13 point-to-point
ip address 192.168.13.2 255.255.255.0
frame-relay interface-dlci 301
ip classless
end
R3#show fr map
Serial1/0.13 (up): point-to-point dlci, dlci 301, broadcast, status defined, active
R3#show fr lmi
LMI Statistics for interface Serial1/0 (Frame Relay DTE) LMI TYPE = CISCO
Invalid Unnumbered info 0 Invalid Prot Disc 0
Invalid dummy Call Ref 0 Invalid Msg Type 0
Invalid Status Message 0 Invalid Lock Shift 0
Invalid Information ID 0 Invalid Report IE Len 0
Invalid Report Request 0 Invalid Keep IE Len 0
Num Status Enq. Sent 703 Num Status msgs Rcvd 702
Num Update Status Rcvd 0 Num Status Timeouts 16
LMI Statistics for interface Serial1/0.13 (Frame Relay DTE) LMI TYPE = CISCO
Invalid Unnumbered info 0 Invalid Prot Disc 0
Invalid dummy Call Ref 0 Invalid Msg Type 0
Invalid Status Message 0 Invalid Lock Shift 0
Invalid Information ID 0 Invalid Report IE Len 0
Invalid Report Request 0 Invalid Keep IE Len 0
Num Status Enq. Sent 0 Num Status msgs Rcvd 0
Num Update Status Rcvd 0 Num Status Timeouts 16
R3#show fr pvc
PVC Statistics for interface Serial1/0 (Frame Relay DTE)
DLCI = 301, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial1/0.13
input pkts 14055 output pkts 32795 in bytes 1096228
out bytes 6216155 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 32795 out bcast bytes 6216155
Any input would really be appreciated.
ThanksTurns out the mistake was not adding a mask to the subnet. Ex:
Router_2(config_router)# network 192.168.0.0 0.0.255.255
Router_2(config_router)# network 172.27.0.0 0.0.255.255
Doing that on both routers made the hosts capable of pinging each other.
Thanks for the tips everyone -
Connection from remote sites (Frame Relay WAN) to AS/400 dissapears
Hello,
We have the following problem appearing in our environment:
All connections from remote sites dissapears unexpected from AS/400. After 2-3 minutes remote users get normal connectivity again.
The environment is the the following:
Frame Relay/ATM WAN (Frame Relay on remote sites and ATM in datacenter) comes to Cisco 7204VXR router which connected to LAN switch with 10/100/1000 ports. AS/400 with Fast Ethernet interface also connected to the similar LAN switch. CEF is enabled on the router, IOS version 12.4.3a. We have ETHSTD *ALL parameter set on AS/400. Remote users uses TCP/IP and Telnet but there are a number of 5494 controllers wich uses SNA.
We got the problem for the first time after we enabled CEF on the router.
I suspect that the cause of problem is Ethernet frames of different standards due to ETHSTD *ALL, but can neither reproduce the problem nor understand why it behaves so.
Have anybody had similar problem?
I would be very thanksfull if somebody can help me to solve it.
Thank you in advance.
//Mikhail GaliulinHi Martin,
Cisco 7200 itself can access AS/400 as well as all other hosts in the same with AS/400 LAN. There is no any outage in communications which goes to another LAN segment via Netscreen firewall while the communication via Cisco is down. Only those hosts which connected via Cisco are experiencing the problem. I can not say where the traceroute from AS/400 stucks (there are other people who maintain the machine and they never could catch the exact moment of outage).
To turn off CEF I treat as the last option actually and unfortunatelly there is no guarantee that software upgrade will help (we have 12.4.3a now).
So first of all I'm trying to understan WHY it happens because I can not see any systematics in the problem appearance. It can happen 3 times under 2 days and then dissapear for 1-2 months...
//Mikhail Galiulin -
Configuring Frame-Relay and the Frame-Relay Switch To Participate in WAN Routing
Hey,
My WAN in my voice lab is currently functional between all of my routers HQ, BR1, and BR1 with full-mesh connectivity. I am using my PSTN router for the frame-relay switching as is shown in the attached configs. I have used the connect commands for the PVC routing logic.
connect HQ-BR1 Serial0/3/0 101 Serial0/2/0 201
connect HQ-BR2 Serial0/3/0 102 Serial0/2/1 301
connect BR1-BR2 Serial0/2/0 202 Serial0/2/1 302
My question concerns the possibility of getting the PSTN router to participate in the WAN and the OSPF routing process? The connect command tells how the PVCs are to be connected and pass through the PSTN router. Is there anyway to do it so that a PVC connects to the PSTN router itself?
I would specifically like to create a connection between the HQ and PSTN router over the WAN. If anyone has any insight on this I would really appreciate it.
Thank you.Hello Adam,
you don't need to do FR switching.
You just need to configure a back to back PVC associated to a p2p subinterface under PSTN router interface se0/3/0 and HQ:se0/1/0. the new PVC can be 103 on both sides
PSTN
interface ser0/3/0.103 point-to-point
ip address 10.1.13.1 255.255.255.0
frame-relay interface-dlci 103
HQ
interface ser0/1/0.103 point-to-point
ip address 10.1.13.1 255.255.255.0
frame-relay interface-dlci 103
note: I was able to do this using the older syntax frame-relay route under interface configuration on frame relay switch. I would expect to work for you too with newer syntax connect.
Hope to help
Giuseppe -
2621 as a Frame Relay switch & terminal server?
Is it unwise to use a 2621 as a combined Frame Relay switch & terminal server in a home lab? Both functions seem to move a general-purpose router into the dedicated use category.
Likewise, is it true than configuring a router to serve as a Frame Relay switch isn't memory intensive?
If I am wrong in my assumptions, please feel free to correct my misperceptions.
Thanks.Using the 2621 for frame and TS should be fine. I do it in my lab and have never had a problem.
-
Dear Sir/Madam,
I have Frame relay CIR 256 kps with configure as follow:
factory#show run
Building configuration...
Current configuration : 2126 bytes
version 12.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
hostname factory
enable secret xxx
enable password xxx
ip subnet-zero
interface FastEthernet0/0
ip address 192.168.0.1 255.255.254.0
ip access-group 100 in
duplex auto
speed auto
interface Serial0/0
bandwidth 256
no ip address
encapsulation frame-relay
no fair-queue
traffic-shape rate 192000 24000 24000 1000
frame-relay lmi-type ansi
frame-relay ip rtp header-compression
ip rtp reserve 16384 100 192
interface Serial0/0.1 point-to-point
description connected to Office
ip address 192.168.50.2 255.255.255.0
no cdp enable
frame-relay interface-dlci 16
interface Serial0/1
no ip address
shutdown
interface Serial0/2
no ip address
shutdown
ip classless
ip route 0.0.0.0 0.0.0.0 192.168.50.1
ip http server
ip pim bidir-enable
access-list 100 permit tcp any any eq www
access-list 100 permit tcp any any eq smtp
access-list 100 permit tcp any any eq ftp
access-list 100 permit tcp any any eq pop3
access-list 100 permit tcp any any eq ident
access-list 100 permit tcp any any eq 443
access-list 100 permit tcp any any eq 3389
access-list 100 permit tcp any any eq ftp-data
access-list 100 permit tcp any any eq 143
access-list 100 permit tcp any any eq telnet
access-list 100 permit tcp any any eq 161
access-list 100 permit tcp any any eq domain
access-list 100 permit udp any any eq domain
access-list 100 permit tcp any any eq 139
access-list 100 permit udp any any eq netbios-ns
access-list 100 permit tcp any any eq 135
access-list 100 permit udp any any eq snmp
access-list 100 permit tcp any any eq 8080
access-list 100 permit ip host 192.168.0.22 any
access-list 100 permit ip host 192.168.0.23 any
access-list 100 deny ip any any
access-list 100 deny eigrp any any
snmp-server community public RO
line con 0
line aux 0
line vty 0 4
password xxx
login
end
factory#show int s0/0
Serial0/0 is up, line protocol is up
Hardware is PowerQUICC Serial
MTU 1500 bytes, BW 256 Kbit, DLY 20000 usec,
reliability 255/255, txload 61/255, rxload 56/255
Encapsulation FRAME-RELAY, loopback not set
Keepalive set (10 sec)
LMI enq sent 8861, LMI stat recvd 8861, LMI upd recvd 0, DTE LMI up
LMI enq recvd 0, LMI stat sent 0, LMI upd sent 0
LMI DLCI 0 LMI type is ANSI Annex D frame relay DTE
Broadcast queue 0/64, broadcasts sent/dropped 0/0, interface broadcasts 0
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 1d00h
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue :0/40 (size/max)
5 minute input rate 57000 bits/sec, 13 packets/sec
5 minute output rate 62000 bits/sec, 14 packets/sec
663283 packets input, 419498487 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
16 input errors, 9 CRC, 7 frame, 0 overrun, 0 ignored, 0 abort
820043 packets output, 138740120 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up
factory#
When show int s0/0 I see that:16 input errors, 9 CRC. I think errors from service provider? because I alway use under 100 kps but still have some errors.
Thanks very much,
NhuongPhamWhen you're able, schedule some downtime for this circuit, and have your provide do some loopback testing on an off-hours time. Simply open a trouble ticket with them, indicating that you're taking CRC errors at the customer-premisis-equipment. 16 input hours per day doesn't seem like alot, but it's still worth checking out, especially since your WAN provider should do this for free.
-
All,
Sorry for asking this, but I have been beating my head against the wall here. I am getting a T1 installed in my residence for internet connectivity. I am using an old wic-1-dsu-t1-v1 in a 2610 router. I am unable to get this configuration working. I have a very simple configuration so far on the router, but I am unable to get this to come up. I have put the show run below. Some of the commands are default and are not showing up. Obviously I have changed the ip's to generic ones below. Any ideas?
version 12.1
no service single-slot-reload-enable
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
hostname JSS-2610-001
memory-size iomem 10
ip subnet-zero
interface Ethernet0/0
no ip address
shutdown
interface Serial0/0
no ip address
shutdown
interface Serial0/1
no ip address
shutdown
interface Serial0/2
no ip address
encapsulation frame-relay IETF
frame-relay lmi-type ansi
interface Serial0/2.21 point-to-point
ip address 1.1.1.3 255.255.255.252
frame-relay interface-dlci 16
ip classless
ip route 0.0.0.0 0.0.0.0 1.1.1.2
ip http server
line con 0
speed 115200
line aux 0
line vty 0 4Sorry when I transposed the ip's to post i made a mistake in them. 1.1.1.2 is my address and 1.1.1.1 is the gateway for them (their side of the t1). I have it configure correctly on my router with the real ip's.
Here is the post to the rest of your questions:
Serial0/2 is up, line protocol is up
Hardware is PQUICC with Fractional T1 CSU/DSU
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation FRAME-RELAY IETF, loopback not set
Keepalive set (10 sec)
LMI enq sent 16787, LMI stat recvd 16788, LMI upd recvd 0, DTE LMI up
LMI enq recvd 0, LMI stat sent 0, LMI upd sent 0
LMI DLCI 0 LMI type is ANSI Annex D frame relay DTE
FR SVC disabled, LAPF state down
Broadcast queue 0/64, broadcasts sent/dropped 2812/0, interface broadcasts 15
Last input 00:00:04, output 00:00:04, output hang never
Last clearing of "show interface" counters 1d22h
Input queue: 0/75/3/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: weighted fair
Output queue: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/1/256 (active/max active/max total)
Reserved Conversations 0/0 (allocated/max allocated)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
16791 packets input, 249054 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 1 giants, 0 throttles
3350 input errors, 1097 CRC, 1758 frame, 0 overrun, 0 ignored, 495 abort
19638 packets output, 1080335 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
0 output buffer failures, 0 output buffers swapped out
6 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up
JSS-2610-001#show frame-relay pvc
PVC Statistics for interface Serial0/2 (Frame Relay DTE)
Active Inactive Deleted Static
Local 1 0 0 0
Switched 0 0 0 0
Unused 0 0 0 0
DLCI = 16, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0/2.21
input pkts 0 output pkts 2834 in bytes 0
out bytes 844139 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 2809 out bcast bytes 841611
pvc create time 1d22h, last time pvc status changed 15:31:28
Is it possible the carrier just hasn't "activated" the circuit? -
Hi All,
I have configured below point to point link with FR switch in GNS 3.
below is the configuration for the senario.
R1#sh run int serial 0/0
Building configuration...
Current configuration : 144 bytes
interface Serial0/0
no ip address
encapsulation frame-relay
clock rate 2000000
no frame-relay inverse-arp
frame-relay lmi-type ansi
end
R1#sh run int serial 0/0.101
Building configuration...
Current configuration : 118 bytes
interface Serial0/0.101 point-to-point
ip address 10.1.1.1 255.255.255.252
frame-relay interface-dlci 101
end
==============================
R2#sh run int serial 0/0
Building configuration...
Current configuration : 144 bytes
interface Serial0/0
no ip address
encapsulation frame-relay
clock rate 2000000
no frame-relay inverse-arp
frame-relay lmi-type ansi
end
R2#sh run int serial 0/0.201
Building configuration...
Current configuration : 118 bytes
interface Serial0/0.201 point-to-point
ip address 10.1.1.2 255.255.255.252
frame-relay interface-dlci 201
end
======================
FR switch is port 1-101 for R1 serial 0/0 & Port 2-201 for R2 serial 0/0
Below is the status for the sh frame-relay map
R1#sh frame-relay map
Serial0/0.101 (up): point-to-point dlci, dlci 101(0x65,0x1850), broadcast status defined, active
R2#sh frame-relay map
Serial0/0.201 (down): point-to-point dlci, dlci 201(0xC9,0x3090), broadcast status deleted
Serial0/1.201 (administratively down): point-to-point dlci, dlci 201(0xC9,0x3090), broadcast status deleted
Please let me know where i am making a mistake.Hello
You mentioned a FR switch, if so these routers interfaces should not be clocking - as they should be both DTE's
Delete the config (sub interfaces and default the serial interfaces ,also shut/no shut them and re apply the config)
res
Paul
Please don't forget to rate any posts that have been helpful.
Thanks. -
Fram Relay hub and spoke scenario
See the attachment please
Requirements:
1.Using only physical interfaces configure a Frame Relay hub-and-spoke network between RTA and RTB and RTC, RTB as the hub.
2.Traffic from RTA destined for RTC should transit RTB, and vice versa.
3.Use only the DLCIs specified in the diagram.
4.Do not use any Dynamic layer 3 to layer 2 mappings over these frame Relay connections.
5.Do not send any redundant broadcast traffic from the spokes to the hub.
RTB (Hub):
interface Serial0/0
ip address 3.1.1.2 255.255.255.0
encapsulation frame-relay
frame-relay map ip 3.1.1.1 200 broadcast
frame-relay map ip 3.1.1.3 300 broadcast
no frame-relay inverse-arp
RTA (Spoke):
interface Serial0/0
ip address 3.1.1.1 255.255.255.0
encapsulation frame-relay
frame-relay map ip 3.1.1.2 22 broadcast
frame-relay map ip 3.1.1.3 22
no frame-relay inverse-arp
RTC (Spoke):
interface Serial1/0
ip address 3.1.1.3 255.255.255.0
encapsulation frame-relay
frame-relay map ip 3.1.1.2 33 broadcast
frame-relay map ip 3.1.1.1 33
no frame-relay inverse-arp
My queries:
A- Does he use these two statements because (frame-relay map ip 3.1.1.3 22 and frame-relay map ip 3.1.1.1 33 ) of requirement number 2 ?
B- Doesnt he use keyword broadcast in these two statements (frame-relay map ip 3.1.1.3 22 and frame-relay map ip 3.1.1.1 33) because of requirement 5?
C- Does that mean if requirement 5 is not there we should have used broadcast keyword ?
D- Does not that contradict with what Cisco syas: The broadcast keyword is commonly used with the frame relay map command ?
E- By using these two statements (frame-relay map ip 3.1.1.3 22 and frame-relay map ip 3.1.1.1 33) doesnt my network become full mesh? but if you look to the diagram it is partial mesh ?Answers to your queries:
A. Correct
B. Correct
C. That depends. In most cases, it is a good idea to have broadcasts on, especially when using routing protocols like OSPF which send traffic to multicast destinations. I would habe it on most times.
D. The recommendation from Cisco is not contradictory. The lab scenario is making you do something quite specific so you have to follow that. You don't always have to follow requirements in order to make things work.
E. No. Full-mesh refers to a full mesh of PVCs. If there was a PVC from A to C it would be full mesh.
Hope that helps - pls rate the post if it does.
Paresh -
Signal flow chart for using DIO on 5640R
Hi,
There are a bunch of good templates to get me started with analog I/O but not for digital I/O. My project needs the host to send out a value through digital lines @10MHz. Now I have a few basic questions regarding the standard procedures to work with DIO?
1. what are the essential items in the signal flow chart on host? Open session->configuration->write->initialization->close session?
2. What are the differences of opening a session using FPGA VI Reference.vi and 5640 init Generation Session.vi? They are not interchangable.
3. Do I have to use a FIFO to transfer data between FPGA and host in this case?
At last, I highly recommend ni group to create a working template for DIO. If easy modification to analog I/O template can work for DIO, please show to how, that'll be great.
Thank you.
DanHi Dan,
The basic flow of programming on the Host for digital output would be similar to:
Open FPGA Reference >> Configuration (as needed) >> Write to FPGA >> Close session
You could use a FIFO to pass data between the host and the FPGA or you could just pass data via controls and indicators. I have included an example project which passes data from the host to a control on the FPGA VI. If you are transferring the data as a 32-bit unsigned integer then you will need to manually format and control the way it is output from the FPGA VI. There is not a pre-made function to do that.
As for testing, you can manually probe the pins on a connector with a DMM. Here is the pinout for the AUX connector.
Regards,
Barron
Barron
Applications Engineering
National Instruments
Attachments:
ni5640R Digital Output Example.zip 282 KB
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