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
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
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-
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
03-18-2011 03:11 AM
These interfaces seems to be good. Can you share the multilink config & output??
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
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
03-18-2011 04:18 AM
config is okay. can you check the show ppp multilink output & see everything is ok??
03-18-2011 04:20 AM
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