Frame-Relay Fragment

I have a 3640 and several 2611's running 12.2(5d). I am trying to issue the frame-relay fragment command under map-class frame-relay but it is not a option. I want to break up any large packets that would cause latency in the voice traffic. Is there another way to do this other than the frame-relay fragment command?

There are 3 ways in which you could configure frame relay fragmentation. They are:
1.Using the "frame-relay fragment" command, as per the FRF.12 fragmentation.
2.Using the FRF.11 fragmentation. This method is not recommended for use with Voice over IP (VoIP).
3.Cisco Proprietary fragmentation using the command "vofr cisco"
The 3rd options could be the solution for your query.
For more details on this, please refer to the following document:
Configuring Frame Relay Fragmentation
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fwan_c/wcffrely.htm#1060792
For more details on the 3rd option give above, you could refer to:
Cisco Proprietary Voice Encapsulation
http://www.cisco.com/en/US/products/sw/iosswrel/ps1831/products_configuration_guide_chapter09186a00800ca6a9.html#xtocid232909

Similar Messages

"frame-relay fragment XYZ" causes link to stop working

Hi people!
I have a strange problem regarding the "frame-relay fragment xyz" command. I have the following configuration:
interface Serial0/0
description R3926704: phy. FrameRelay-Interface (Se0/0)
bandwidth 512
no ip address
max-reserved-bandwidth 95
encapsulation frame-relay IETF
no ip mroute-cache
load-interval 30
no snmp trap link-status
no fair-queue
cdp enable
frame-relay traffic-shaping
frame-relay lmi-type q933a
end
interface Serial0/0.1 point-to-point
description YYY: FR-Verbindung zum YY(Se0/0.1)
bandwidth 512
ip address A.A.A.A B.B.B.B
frame-relay class egress_queue_512k
frame-relay interface-dlci 16
end
map-class frame-relay egress_queue_512k
frame-relay cir 486000
frame-relay bc 48600
frame-relay be 0
frame-relay mincir 486000
service-policy output egress_queue
... if i change the map-class to:
map-class frame-relay egress_queue_512k_voice
frame-relay cir 486000
frame-relay bc 4860
frame-relay be 0
frame-relay mincir 486000
service-policy output egress_queue
frame-relay fragment 53
... no traffic goes over the link any more. no telnet no other traffic. the strange thing is, that i can ping the router!??
does anyone know what's the problem here??
thanks for any help!!
Mario

also, this fragment size must be set on both sides of the link, the same size, even if the hub has a greater link speed than the spoke.
see this document for more info:
http://www.cisco.com/en/US/partner/tech/tk652/tk698/technologies_configuration_example09186a0080094af9.shtml#topic9

"frame-relay fragment" causes link to stop working

Hi people!
I have a strange problem regarding the "frame-relay fragment xyz" command. I have the following configuration:
interface Serial0/0
description R3926704: phy. FrameRelay-Interface (Se0/0)
bandwidth 512
no ip address
max-reserved-bandwidth 95
encapsulation frame-relay IETF
no ip mroute-cache
load-interval 30
no snmp trap link-status
no fair-queue
cdp enable
frame-relay traffic-shaping
frame-relay lmi-type q933a
end
interface Serial0/0.1 point-to-point
description YYY: FR-Verbindung zum YY(Se0/0.1)
bandwidth 512
ip address A.A.A.A B.B.B.B
frame-relay class egress_queue_512k
frame-relay interface-dlci 16
end
map-class frame-relay egress_queue_512k
frame-relay cir 486000
frame-relay bc 48600
frame-relay be 0
frame-relay mincir 486000
service-policy output egress_queue
... if i change the map-class to:
map-class frame-relay egress_queue_512k_voice
frame-relay cir 486000
frame-relay bc 4860
frame-relay be 0
frame-relay mincir 486000
service-policy output egress_queue
frame-relay fragment 53
... no traffic goes over the link any more. no telnet no other traffic. the strange thing is, that i can ping the router!??
does anyone know what's the problem here??
thanks for any help!!
Mario

Mario,
You need to base the fragment size on the lowest speed link between the 2 routers. If the lowest speed link is 512k, the recommended fragment size is 640 bytes.This is to achieve a 10ms serialization delay. The formula to compute this is Max Delay X Bandwidth. Please see Table 5 in the following link for recommended fragment sizes for 10ms serialization delay for different speed links.
frame-relay fragment command
http://www.cisco.com/en/US/products/sw/iosswrel/ps5187/products_command_reference_chapter09186a008017cf52.html#wp1034268
Hope this helps. If so, please rate the post.
Brandon

Frame-relay fragment command missing

Does anyone know why the frame-relay fragment command is not available on 3600 and 2600 routers running 12.2(5d) IOS? I have not been able to find a definite answer.

It is supported.
3660-4#sh ver
Cisco Internetwork Operating System Software
IOS (tm) 3600 Software (C3660-IS-M), Version 12.2(5d), RELEASE SOFTWARE (fc1)
Copyright (c) 1986-2002 by cisco Systems, Inc.
Compiled Fri 01-Feb-02 22:38 by kellythw
Image text-base: 0x600089C0, data-base: 0x61200000
ROM: System Bootstrap, Version 12.0(6r)T, RELEASE SOFTWARE (fc1)
3660-4 uptime is 2 minutes
System returned to ROM by reload
System image file is "flash:c3660-is-mz.122-5d"
3660-4(config-map-class)#fra,
3660-4(config-map-class)#fram
3660-4(config-map-class)#frame-relay frag
3660-4(config-map-class)#frame-relay fragment ?
<16-1600> Define fragment size
3660-4(config-map-class)#frame-relay fragment 160
3660-4(config-map-class)#end
3660-4#
map-class frame-relay voiceover
frame-relay fragment 160
no frame-relay adaptive-shaping
frame-relay fair-queue

Frame-relay packet fragmenting on a 2611

I have a 2611 router that I am prioritizing voice traffic over frame-relay. The traffic is converted to ip by a siemens phone system. I am just prioritizing the specified udp ports. I want to fragment the frame-relay packets but under the map-class statement frame-relay fragment is not a option. Should I do this somewhere else?

yeap.. it's under map-class, see example:
http://www.cisco.com/en/US/tech/tk652/tk701/technologies_configuration_example09186a0080094193.shtml
which IOS version do you have? 2600 has FRF.12 since 12.0.4T AFAIK.
regards
Mirek

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 1-24

Hello,
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.

Voice over Frame-Relay

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,
JH

The 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!

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.

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.

Is Low MTU (ie 320) for VoIP over Frame-relay can be used to avoid serialization delay for large data packets?

In order to provide voice quality for VoIP, is FR fragmentation equivalent to lowering the MTU size for the serial subinterface of a Frame relay subinterface?
Is there any isues like stop communications, using Low MTU ?

If the router belongs to any of the
platform listed below, then use
FRF12 for you fragmentation. The MTU size
lowering also works but this can cause a high over
head as it can't be specified on a per dlci level.
With multiple dlci i.e. subinterfaces use per dlci fragmentation.. this helps reduce the overhead of changing the MTU size of the physical interface.
Snip config example.( __Must be configured on both side of the termination___)
PHONE 3333312---ROUTERA ----DLCI 100----ROUTERB ---PHONE 2111123
ROUTER A
dial-peer voice 1 voip
destination-pettern 2T
session target ipv4:10.10.10.2
int ser 0/0
encap frame-relay
frame-relay traffic-shaping
no ip address
interface serial0/0.1 point-to-point
ip add 10.10.10.1 255.255.255.252
frame-relay interface-dlci 100
class voice
map-class frame-relay voice
frame cir 64000
frame bc 640
frame mincir 64000
frame-relay ip rtp priority 16384 16383 48
frame fragment 80
frame fair-queue 64 256 0
ROUTER B
dial-peer voice 3 voip
destination-pettern 3T
session target ipv4:10.10.10.1
int ser 0/0
encap frame-relay
frame-relay traffic-shaping
no ip address
interface serial0/0.1 point-to-point
ip add 10.10.10.2 255.255.255.252
frame-relay interface-dlci 100
class voice
map-class frame-relay voice
frame cir 64000
frame bc 640
frame mincir 64000
frame-relay ip rtp priority 16384 16383 48
frame fragment 80
frame fair-queue 64 256 0
This should help if your router is
c2600, c3600, mc3810, c7200, c1750
all running the right level of IOS.
12.1(5)T and above should work well.

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.
Thanks

Turns 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 Galiulin

Hi 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.

Troubleshooting Frame relay

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,
NhuongPham

When 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.

Frame-Relay Fragment

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