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Multilink input errors

Jason Jayko
Level 1
Level 1

‎03-17-2011 05:03 AM - edited ‎03-04-2019 11:46 AM

Our cisco 1841 router has been pulling alot of input errors for the last month on the multilink. No other errors. I've restarted the router switched the t's arround same thing, constant errors. Have even removed and rebuilt the multilink and tried another t1 controller card with no luck. Our t1 provided has test the lines clean.

System image file is "flash:c1841-advsecurityk9-mz.124-16.bin"

Cisco 1841 (revision 7.0) with 233472K/28672K bytes of memory.
Processor board ID FTX1126W1GR
2 FastEthernet interfaces
3 Serial interfaces
2 Channelized T1/PRI ports
1 Virtual Private Network (VPN) Module
WIC T1-DSU
DRAM configuration is 64 bits wide with parity disabled.
191K bytes of NVRAM.
62720K bytes of ATA CompactFlash (Read/Write)

Configuration register is 0x2102

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8 Replies 8

Jason Jayko
Level 1
Level 1

‎03-17-2011 05:03 AM

  MTU 1500 bytes, BW 3072 Kbit, DLY 100000 usec,

     reliability 128/255, txload 1/255, rxload 1/255

  Encapsulation PPP, LCP Open, multilink Open

  Open: IPCP, loopback not set

  Keepalive set (10 sec)

  DTR is pulsed for 2 seconds on reset

  Last input 00:00:00, output never, output hang never

  Last clearing of "show interface" counters 00:09:26

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 7601

  Queueing strategy: fifo

  Output queue: 40/40 (size/max)

  5 minute input rate 10000 bits/sec, 15 packets/sec

  5 minute output rate 0 bits/sec, 0 packets/sec

     7504 packets input, 578290 bytes, 0 no buffer

     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles

     7504 input errors, 0 CRC, 7504 frame, 0 overrun, 0 ignored, 0 abort

     36 packets output, 8726 bytes, 0 underruns

     0 output errors, 0 collisions, 0 interface resets

     0 output buffer failures, 0 output buffers swapped out

     0 carrier transitions

0 Helpful

KATTUBAVA E.S
Level 1
Level 1
In response to Jason Jayko

‎03-17-2011 05:16 AM

Hello Jason,

Is the above output taken from the multilink or physical member? If the above output belongs to multilink then you need to check all the member interfaces for errors. Figure out the interface which is giving error & remove that interface from the multilink & check. Normally this could be becoz of bad cable or interface

reliability 128/255, txload 1/255, rxload 1/255

HTH,

-bava-

0 Helpful

Jason Jayko
Level 1
Level 1
In response to KATTUBAVA E.S

‎03-17-2011 05:36 AM

Serial0/1/0:1 is up, line protocol is up

  Hardware is GT96K Serial

  Description: .02

  MTU 1500 bytes, BW 1536 Kbit, DLY 20000 usec,

     reliability 255/255, txload 12/255, rxload 3/255

  Encapsulation PPP, LCP Open, multilink Open

  Link is a member of Multilink bundle Multilink1, loopback not set

  Keepalive set (10 sec)

  Last input 00:00:00, output 00:00:03, output hang never

  Last clearing of "show interface" counters 00:01:40

  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 23000 bits/sec, 20 packets/sec

  5 minute output rate 74000 bits/sec, 28 packets/sec

     4603 packets input, 778970 bytes, 0 no buffer

     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles

     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort

     8151 packets output, 2939869 bytes, 0 underruns

     0 output errors, 0 collisions, 2 interface resets

     0 output buffer failures, 0 output buffers swapped out

     1 carrier transitions

  Timeslot(s) Used:1-24, SCC: 0, Transmitter delay is 0 flags

Serial0/1/1:1 is up, line protocol is up

  Hardware is GT96K Serial

  Description: .01

  MTU 1500 bytes, BW 1536 Kbit, DLY 20000 usec,

     reliability 255/255, txload 12/255, rxload 4/255

  Encapsulation PPP, LCP Open, multilink Open

  Link is a member of Multilink bundle Multilink1, loopback not set

  Keepalive set (10 sec)

  Last input 00:00:00, output 00:00:03, output hang never

  Last clearing of "show interface" counters 00:01:41

  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 25000 bits/sec, 20 packets/sec

  5 minute output rate 74000 bits/sec, 28 packets/sec

     4624 packets input, 791671 bytes, 0 no buffer

     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles

     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort

     8188 packets output, 2957000 bytes, 0 underruns

     0 output errors, 0 collisions, 2 interface resets

     0 output buffer failures, 0 output buffers swapped out

     1 carrier transitions

  Timeslot(s) Used:1-24, SCC: 1, Transmitter delay is 0 flags

0 Helpful

bava_ccna
Level 1
Level 1
In response to Jason Jayko

‎03-18-2011 03:11 AM

These interfaces seems to be good. Can you share the multilink config & output??

0 Helpful

Jason Jayko
Level 1
Level 1
In response to bava_ccna

‎03-18-2011 03:58 AM

!
!
!
controller T1 0/1/0
framing esf
linecode b8zs
channel-group 1 timeslots 1-24
!
controller T1 0/1/1
framing esf
linecode b8zs
channel-group 1 timeslots 1-24
!
!
!
!
!
interface Multilink1
ip address 63.148.39.250 255.255.255.252
ip route-cache flow
no cdp enable
ppp multilink
ppp multilink group 1
!

!
interface Serial0/1/0:1
description .02
no ip address
encapsulation ppp
no fair-queue
ppp multilink
ppp multilink group 1
!
interface Serial0/1/1:1
description .01
no ip address
encapsulation ppp
no fair-queue
ppp multilink
ppp multilink group 1

0 Helpful

Jason Jayko
Level 1
Level 1
In response to Jason Jayko

‎03-18-2011 03:59 AM

Multilink1 is up, line protocol is up

  Hardware is multilink group interface

  Internet address is 63.148.39.250/30

  MTU 1500 bytes, BW 3072 Kbit, DLY 100000 usec,

     reliability 138/255, txload 1/255, rxload 1/255

  Encapsulation PPP, LCP Open, multilink Open

  Open: IPCP, loopback not set

  Keepalive set (10 sec)

  DTR is pulsed for 2 seconds on reset

  Last input 14:22:28, output never, output hang never

  Last clearing of "show interface" counters 22:27:14

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 3145

  Queueing strategy: fifo

  Output queue: 0/40 (size/max)

  5 minute input rate 15000 bits/sec, 8 packets/sec

  5 minute output rate 22000 bits/sec, 9 packets/sec

     6928368 packets input, 1405995543 bytes, 0 no buffer

     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles

     6928364 input errors, 0 CRC, 6928364 frame, 0 overrun, 0 ignored, 0 abort

     7547944 packets output, 3281138402 bytes, 0 underruns

     0 output errors, 0 collisions, 1 interface resets

     0 output buffer failures, 0 output buffers swapped out

     0 carrier transitions

0 Helpful

bava_ccna
Level 1
Level 1
In response to Jason Jayko

‎03-18-2011 04:18 AM

config is okay. can you check the show ppp multilink output & see everything is ok??

0 Helpful

Jason Jayko
Level 1
Level 1
In response to bava_ccna

‎03-18-2011 04:20 AM

Multilink1, bundle name is alb-priv-10

  Endpoint discriminator is alb-priv-10

  Bundle up for 22:47:36, total bandwidth 3072, load 1/255

  Receive buffer limit 24000 bytes, frag timeout 1000 ms

    0/0 fragments/bytes in reassembly list

    0 lost fragments, 935471 reordered

    0/0 discarded fragments/bytes, 0 lost received

    0x79F98B received sequence, 0xBA0E60 sent sequence

  Member links: 2 active, 1 inactive (max not set, min not set)

    Se0/1/1:1, since 22:47:36

    Se0/1/0:1, since 22:47:36

    Se0/0/0 (inactive)

No inactive multilink interfaces
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