Frame Relay access into MPLS with QOS

My provider is telling me that I can take my frame relay network and map it into their MPLS network. Basically all my sites would connect into the providers Frame network and then mapped into the proivders MPLS network. Now I know this will work; but my concern is VoIP and QOS. If I have a single PVC and I am marking VoIP packets with an IPPREC of 5 how will the providers frame realy network see that? And how will it be honered from CE => Provider FR => PE => P => PE => Provider FR => CE

Todd, I doubt how would your SP provide you guranteed QOS SLA's with that setup. As there is no one to one mapping of PREC/EXP values to FR based QOS.
But although, if he gurantees or ensures that the FR access cloud is never going to be congested and everything is fifo in there then he can provide your per hop QOS behaviour based on your PREC value across the MPLS cloud.
HTH-Cheers,
Swaroop

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Why is everything on my Frame-relay network working fine with different encapsulation types ?

I have a cisco frame-relay switch with the encapsulation type on IETF.
I have a cisco router with
the encapsulation type on cisco.
Still everything works fine.
How come when it is a different dlsi byte structure ?
Is it because also my switch is a cisco and it uses cisco encap afterall ?

A cisco router will understand both the IETF and normal Cisco encapsulation when receiving data regardless of configuration. However, depending on the configuration, it will only send one type.

Video teleconferencing over frame-relay

I have a user who requires using a polycom video teleconferencing unit at one of my sites that has a t-1 frame-relay circuit. The video is extremly choppy and sometimes completly freezes. I was wondering if there was any particular qos for frame-relay. I have no qOS at the moment. I have found some sample configs for atm and would like to see one for frame-relay. If you have any suggestions any help would be appreciated.

QoS for video over frame relay can be difficult to achieve, although Cisco provides lots of tools to do the best you can. Typically you will want to keep the video traffic within the CIR of the frame circuit. This can be done through setting the TOS bits at the Polycom unit (or through the proxy feature on the Cisco MCM) and then using CBWFQ or other prioritization schemes with the ability to set the bandwidth.
The difficult part comes in that frame-relay is a layer 2 technology and once the traffic goes into the frame-relay network, there is no prioritization of your traffic versus other customers' traffic at each FR switch. CIR will guarantee bandwidth but not necessarily delay constancy which is as important for live video.
Some other considerations might include codec selection - H.264 gives good quality at lower bitrates if your Polycom unit supports it.
Hope this helps,
John

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.

MPLS - Frame Relay

Hi
I am trying to understand the build we have on our CE routers from the Service Provider. Frame-relay encapsulation is build on the Wan interface with LMI configured/dlci enabled on sub-interface. At the PE end, there is also Frame-relay configuration on the PE end...How does that work? Does Cisco have any docs that I could read?

Hello Mary,
on the PE router there is a Frame-relay interface and sub-interfaces.
the PE-CE link is the VRF access link what is different on the PE side is the presence of the command ip vrf forwarding VRF-name in the correct FR subif.
Then the MPLS cloud includes the backbone links of the PE routers.
see the following link for an introduction to MPLS VPN
http://www.cisco.com/en/US/docs/net_mgmt/vpn_solutions_center/1.2/provisioning/user/guide/VPN_UG1.html
Hope to help
Giuseppe

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.

Frame Relay vs MPLS

Why does the Cisco CCNA certification cover Frame Relay if MPLS is the more used WAN technology?

CCNA is more like a foundation building certification. So it tends to cover a whole array of topics, but all at the basic level, just enough to give food for thought, and a fair level of understanding how each technology works. To cover MPLS would not have been appropriate in CCNA as MPLS needs the foundation as well as the routing level professional knowledge already in place..
But again with one level below CCNA certification, this may change probably, and they may cover light basics of MPLS. So that you can actually study the operations in professional and expert level certifications. Just a thought.
HTH-Cheers,
Swaroop

Difrence between ... MPLS over Frame-Relay ATM

Hai all,
Sorry to ask very basic quiestion ..can some one tell what is the difrnce and advantage of MPLS over ATM and Frame-Relay ......pls provide me a better link ..for refrnce
Thanks in advance
Lijesh

MPLS over ATM or MPLS over Frame-Relay it's not good idea, because if you use cell-mode labeling, you find someone limitation at this technology. DLCI and VPI/VCI value at this protocols it's not have large space. If you know how operate cell-mode, try to look at just for sample bits length with DLCI value at Frame-Relay protocol or VPI/VCI value at ATM protocolâ¦ Of course you can use same cheat like VCI-merge, but I think it's not very good idea.
Building new network infrastructure at this protocols it's not good ideaâ¦ It's good idea to fast implement MPLS technology in old network infrastructure build with this protocols (just for sample, you can linked ATM forwarding plane and MPLS forwarding plane (in this situation you can abandon to use fixed configuration VPI/VCI for IP network and can use benefits offered ATM technology with MPLS)), but not for new network infrastructure. If you need to offer services with this protocols, you can use Any Transport Over MPLS technology.
For more information look at this page - http://www.cisco.com/en/US/tech/tk436/tk798/tsd_technology_support_protocol_home.html

Viop over Frame Relay QOS

I'm tryint to apply qos to our frame-relay links.
Rferencing this document
http://www.cisco.com/en/US/tech/tk652/tk698/technologies_configuration_example09186a0080094af9.shtml
I'm using software vers. 123-14.T3
The problem I am having is that when I apply frame-relay traffic-shaping to the frame-relay serial interface all my data and voice get corrupted(very choppy voice, intermittant pings, application timeouts etc.) My network essentially slows to a crawl.
This occurs before I have applied the class to the dlci.
I would assume no traffic shaping would take place until I apply a class to the frame relay dlci.
Has anyone seen this or have any suggestions?

Hello,
The moment you apply the command "frame-relay traffic-shaping" under the frame-relay serial interface, all the sub-interfaces/DLCIs will default to 56kbps CIR, since you haven't applied the class under the DLCI yet.
Best practice is to configure a default map-class with a higher CIR and apply that under the main interface before you configure frame-relay traffic-shaping. So, if there is no class defined under any sub-interface, the DLCI will inherit the traffic shaping parameters from the class defined under the main interface. If there is a class defined under the DLCI, the traffic shaping properties from that class will take affect for that DLCI.
Hope that helps.
Regards,
Srikanth

Frame-Relay through MPLS cloud

Hi All ,
Can anybody explain if I make a MPLS pe act as a frame-relay sw too is there in LDP related issue or not ?

It is possible to use Frame Relay switches as Label, Switching Routers. Such Frame Relay switches run network layer routing algorithms (such as OSPF, IS-IS, etc.), and their forwarding
is based on the results of these routing algorithms. No specific
Frame Relay routing is needed.
When a Frame Relay switch is used for label switching, the top
(current) label, on which forwarding decisions are based, is carried
in the DLCI field of the Frame Relay data link layer header of a
frame. Additional information carried along with the top (current)
label, but not processed by Frame Relay switching, along with other
labels, if the packet is multiply labeled, are carried in the generic
MPLS encapsulation defined in [STACK].
Check this out.
http://www.ietf.org/rfc/rfc3034.txt

Problems with MX record - Relay access denied

Hello there,
I'm just having some issues with my mails on a business catalyst website.
We want to use an external server to handle mail, so I created an MX record accordingly in the business catalyst control center, pointing to the external mx server.
However, when I lookup the mx entry with mxtoolbox it shows me something like mx.mydomain.ch.cust.b.hostedmail.com
I guess this is originated from businesscatalyst, since the name server entries should be up to date by name (ns1.worldsecuresystems.com, ns2.worldsecuresystems.com).
When I try to send an email to my domain hosted on business catalyst, I get an
554 5.7.1 <[email protected]>: Relay access denied
Why is the mx entry resolved to *.cust.b.hostedmail.com ?
Thanks in advance

Hi there, If you want to keep mail and other services off BC your better off actually just pointing the domain A-record to BC and leave everything else in tact.
What you have setup is kind of if you posted a letter in the normal post for your next door neigbour. The letter has to do a round trip and come back again.
Pointing the A-record just points your web traffic to BC and your emails stay at their source.
Less hassle.

Circuit 1/e1, what is this ? is it frame-relay or mpls or other ? help me?

I read in one of Job descritpion "Experience of working on circuit(T1/E1,T3/E3,Ethernet) troubleshooting would be preferred".
Could u please help me this circuit t1/e1,etc. Is it covered in ccnap or ccnp rs ?
Is it frame-relay or mpls or other ?
Could you please explain or suggest me the book/blog/doc/etc.

Please refer this:
http://www.ad-net.com.tw/index.php?id=500

AToM Frame Relay over MPLS

Is it possible to have multipoint topologies with FRoMPLS? In other words, if I'm receiving some Frame Relay PVCs on one physical interface on a PE, can I transport some of them to one remote PE and others to another remote PE? Or do I need to have separate physical interfaces to talk to different remote PEs?
Thanks
Tarek

On the PE router, you can indeed take each one of the DLCIs from a same physical interface and connect them to a different egress PE.
Hope this helps,

Frame Relay and MPLS

Hi,
I want to ask about the frame relay and MPLS.
Frame Relay Scenerio
The frames reached at the frame relay network and forwarded on the basis of DLCI. All the VCs are defined prior to the traffic on the network on the basis of DLCI (This is just like the MPLS network as packets are forwarded on the basis of Labels).
Now my Question is How can MPLS is used in frame relay network or what are its affects in the presence of DLCI (As DLCIs are also performing the same task and also works on layer 2) or these two are different equivalent technologies ?

Hi Muhammad,
The answer is : MPLS is working on FR like it's working on ethernet. Because the FR and Ethernet are running on Layer2. It's told that MPLS is working at layer 2.5 , meaning that is between Layer 3 , and Layer 2. So in order to work it needs a layer2 forwarding in your case FR's DLCI. On top of the Layer 2 it is the MPLS header.
Dan

Can I backup a frame relay NNI trunk with ISDN?

I have four Cisco routers interlinked as frame relay switches. I would like to backup my NNI trunks with ISDN, is it possible? If so, how do I configure my frame-relay route statements to point to the ISDN if the same statements also point to the serial NNI trunk?

No, you cannot backup with ISDN a Frame relay NNI trunk.
ISDN can backup frame relay interfaces DTE-DCE.

Frame Relay access into MPLS with QOS

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