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multilink lost fragments and out of sequence

Hi ,

I m not able to add 4th link in multilink group .while adding getting below errors -

routerA

---------

Cisco 3845

flash:c3845-adventerprisek9-mz.124-15.T1.bin

routerB-

-----------

Cisco 7206VXR (NPE-G1)

disk2:c7206-VXR--advipservicesk9-mz.124-24.T3.bin

error Logs from routerA while adding 4th link in multilink ==>

-----------------------------

CR01#sh ppp multilink

Multilink2

  Bundle name: MUM

  Remote Endpoint Discriminator: [1] MLD

  Local Endpoint Discriminator: [1] RAN

  Bundle up for 9w4d, total bandwidth 6144, load 47/255

  Receive buffer limit 36000 bytes, frag timeout 1000 ms

    0/0 fragments/bytes in reassembly list

    61 lost fragments, 43440 reordered

    57/27662 discarded fragments/bytes, 0 lost received

    0x9DFE23 received sequence, 0x618A6C sent sequence

  Member links: 3 active, 1 inactive (max not set, min not set)

    Se0/2/1:0, since 2w3d

    Se0/2/0:0, since 2w3d

    Se0/1/0:0, since 1w2d

    Se0/0/1:0 (inactive)

No inactive multilink interfaces

CR01#

AI-CR01#sh log

Syslog logging: enabled (12 messages dropped, 9 messages rate-limited,

                0 flushes, 0 overruns, xml disabled, filtering disabled)

No Active Message Discriminator.

No Inactive Message Discriminator.

    Console logging: level critical, 29 messages logged, xml disabled,

                     filtering disabled

    Monitor logging: level debugging, 54106 messages logged, xml disabled,

                     filtering disabled

    Buffer logging:  level debugging, 525039 messages logged, xml disabled,

                     filtering disabled

    Logging Exception size (4096 bytes)

    Count and timestamp logging messages: disabled

    Persistent logging: disabled

No active filter modules.

ESM: 0 messages dropped

    Trap logging: level notifications, 8086 message lines logged

        Logging to 10.89.16.102  (udp port 514,  audit disabled,

              authentication disabled, encryption disabled, link up),

              8086 message lines logged,

              0 message lines rate-limited,

              0 message lines dropped-by-MD,

              xml disabled, sequence number disabled

              filtering disabled

        Logging to 10.2.26.156  (udp port 514,  audit disabled,

              authentication disabled, encryption disabled, link up),

              8086 message lines logged,

              0 message lines rate-limited,

              0 message lines dropped-by-MD,

              xml disabled, sequence number disabled

              filtering disabled

        Logging to 10.2.26.157  (udp port 514,  audit disabled,

              authentication disabled, encryption disabled, link up),

              8086 message lines logged,

              0 message lines rate-limited,

              0 message lines dropped-by-MD,

              xml disabled, sequence number disabled

              filtering disabled

Log Buffer (4096 bytes):

2 MLP: Dropped link Se0/3/1:0 from bundle MUM_CR01_MLD

Aug 12 23:50:50.301 IST: Se0/3/1:0 MLP: Request add link to bundle

Aug 12 23:50:50.301 IST: Se0/3/1:0 MLP: Adding link to bundle

Aug 12 23:50:50.301 IST: Se0/3/1:0 MLP: Computed frag size 7672 exceeds MTU, changed to 1496

Aug 12 23:50:50.301 IST: Mu2 MLP: Added link Se0/3/1:0 to bundle MUM_CR01_MLD

Aug 12 23:50:50.301 IST: Se0/3/1:0 MLP: Request drop link from bundle Mu2

Aug 12 23:50:50.301 IST: Mu2 MLP: Removing link Se0/3/1:0 from bundle MUM_CR01_MLD

Aug 12 23:50:50.301 IST: Mu2 MLP: Dropped link Se0/3/1:0 from bundle MUM_CR01_MLD

Aug 12 23:50:52.357 IST: Se0/3/1:0 MLP: Request add link to bundle

Aug 12 23:50:52.357 IST: Se0/3/1:0 MLP: Adding link to bundle

Aug 12 23:50:52.357 IST: Se0/3/1:0 MLP: Computed frag size 7672 exceeds MTU, changed to 1496

Aug 12 23:50:52.357 IST: Mu2 MLP: Added link Se0/3/1:0 to bundle MUM_CR01_MLD

Aug 12 23:50:52.357 IST: Se0/3/1:0 MLP: Request drop link from bundle Mu2

Aug 12 23:50:52.357 IST: Mu2 MLP: Removing link Se0/3/1:0 from bundle MUM_CR01_MLD

Aug 12 23:50:52.357 IST: Mu2 MLP: Dropped link Se0/3/1:0 from bundle MUM_CR01_MLD

Aug 12 23:50:54.417 IST: Se0/3/1:0 MLP: Request add link to bundle

Aug 12 23:50:54.417 IST: Se0/3/1:0 MLP: Adding link to bundle

Aug 12 23:50:54.417 IST: Se0/3/1:0 MLP: Computed frag size 7672 exceeds MTU, changed to 1496

Aug 12 23:50:54.417 IST: Mu2 MLP: Added link Se0/3/1:0 to bundle MUM_CR01_MLD

Aug 12 23:50:54.417 IST: Se0/3/1:0 MLP: Request drop link from bundle Mu2

Aug 12 23:50:54.417 IST: Mu2 MLP: Removing link Se0/3/1:0 from bundle MUM_CR01_MLD

Aug 12 23:50:54.417 IST: Mu2 MLP: Dropped link Se0/3/1:0 from bundle MUM_CR01_MLD

Aug 12 23:50:56.477 IST: Se0/3/1:0 MLP: Request add link to bundle

Aug 12 23:50:56.477 IST: Se0/3/1:0 MLP: Adding link to bundle

Aug 12 23:50:56.477 IST: Se0/3/1:0 MLP: Computed frag size 7672 exceeds MTU, changed to 1496

Aug 12 23:50:56.477 IST: Mu2 MLP: Added link Se0/3/1:0 to bundle MUM_CR01_MLD

Aug 12 23:50:56.481 IST: Se0/3/1:0 MLP: Request drop link from bundle Mu2

Aug 12 23:50:56.481 IST: Mu2 MLP: Removing link Se0/3/1:0 from bundle MUM_CR01_MLD

Aug 12 23:50:56.481 IST: Mu2 MLP: Dropped link Se0/3/1:0 from bundle MUM_CR01_MLD

Aug 12 23:50:57.161 IST: Se0/3/1:0 MLP: Removed interface from multilink group Mu2

Aug 12 23:50:58.821 IST: %SYS-5-CONFIG_I: Configured from console by kailashs on vty1 (10.89.16.110)

Aug 12 23:50:59.425 IST: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/3/1:0, changed state to up

Aug 12 23:55:02.708 IST: Se0/3/1:0 MLP: Added interface to multilink group Mu2

Aug 12 23:55:03.708 IST: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/3/1:0, changed state to down

Aug 12 23:55:05.276 IST: %SYS-5-CONFIG_I: Configured from console by kailashs on vty1 (10.89.16.110)

Aug 12 23:55:05.768 IST: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/3/1:0, changed state to up

Aug 12 23:57:49.332 IST: Mu2 MLP: Lost fragment timeout, seq 9BAC33

Aug 12 23:57:49.332 IST: Mu2 MLP: Discard reassembled packet

Aug 12 23:58:01.324 IST: Mu2 MLP: Lost fragment 9BB323 (all links out of sequence)

Aug 12 23:58:01.324 IST: Mu2 MLP: Begin bit lost, discard fragment 9BB324

Aug 12 23:58:46.146 IST: Mu2 MLP: Lost fragment 9BBF35 (all links out of sequence)

Aug 12 23:58:46.146 IST: Mu2 MLP: Begin bit lost, discard fragment 9BBF36

Aug 13 00:07:39.588 IST: Mu2 MLP: Lost fragment 9BCC6A (all links out of sequence)

Aug 13 00:07:39.588 IST: Mu2 MLP: Begin bit lost, discard fragment 9BCC6B

Aug 13 00:11:03.245 IST: %SYS-5-CONFIG_I: Configured from console by kailashs on vty1 (10.89.16.110)

Aug 13 10:39:49.626 IST: %SYS-5-CONFIG_I: Configured from console by navaneethr on vty0 (10.89.16.110)

Aug 13 10:40:11.371 IST: %SYS-5-CONFIG_I: Configured from console by navaneethr on vty0 (10.89.16.110)

Aug 13 22:35:01.747 IST: %SYS-5-CONFIG_I: Configured from console by kailashs on vty0 (10.89.16.110)

Aug 14 00:24:47.620 IST: %SEC_LOGIN-4-LOGIN_FAILED: Login failed [user: ashoks] [Source: 10.44.61.16] [localport: 22] [Reason: Login Authentication Failed] at 00:24:47 IST Sun Aug 14 2011

Thanks for any help

==============

1 Reply 1

If  possible  I  would  advise  you  to  rebuild  the  mutlilink,

Delete  existing MUltilink and  add  one  by  one  again--  all  4 links.

Those  lost  fragments  and  reordered errors  are  ok,it  will not  cause 4th  link  to  be inactive.

~Jyoti