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

Similar Messages

  • "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

    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

  • "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 - FDL Command for 3900 Router T1?

    Transitioning from 3825 to 3945 (OS is 15.0(1r)M13 c3900-universalk9-mz.SPA.151-4.m4). Turning on FDL on the 3825 was easy but the same command on the 3945 doesn't work. Any ideas?

    The command on the 3825 was:  service-module t1 fdl both
    Doesn't seem to work on the 3945 OS.  Any ideas on how to turn on the FDL for the T1 interface?
    Thanks in advance for any direction you can give on this.

  • 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

  • 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- Doesn’t 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) doesn’t 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

  • 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:
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    encapsulation frame-relay
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    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
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    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!

  • Frame-relay - config a router as a switch

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    Why does this not work?? I cannot get connectivity from R1 to R2!

    John
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    HTH
    Rick

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    regards
    Devang Patel

    Hi,
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      out BECN pkts 0          in DE pkts 0             out DE pkts 0         
      out bcast pkts 0         out bcast bytes 0         
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            ARP request recvd 0, ARP replies recvd 0
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    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

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    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....
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  • Configuring Frame-Relay and the Frame-Relay Switch To Participate in WAN Routing

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    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

  • Frame Relay Configuration

    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 4

    Sorry 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?

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