Please help. I keep having issues with my multilink config. The serial interfaces start showing errors and the VoIP sessions are all static. Basically, it is bonding 2 T1's between a central site and remote site.
Central site details:
2811 Router
card type t1 0 3
no network-clock-participate wic 3
!
controller T1 0/3/0
framing esf
linecode b8zs
channel-group 1 timeslots 1-24
!
controller T1 0/3/1
framing esf
linecode b8zs
channel-group 1 timeslots 1-24
track timer ip route 3
!
interface Multilink1
description // Connection to BIM //
ip address 10.161.0.1 255.255.255.0
ppp multilink
ppp multilink group 1
service-policy output WAN-EDGE-DATA-VOICE
!
interface Serial0/3/0:1
description member T1 to BIM
no ip address
encapsulation ppp
no fair-queue
ppp multilink
ppp multilink group 1
!
interface Serial0/3/1:1
description member T1 to BIM
no ip address
encapsulation ppp
no fair-queue
ppp multilink
ppp multilink group 1
!
Output of sho interface:
CVH-WAN#sho interface Serial0/3/0:1
Serial0/3/0:1 is up, line protocol is up
Hardware is GT96K Serial
Description: member T1 to BIM
MTU 1500 bytes, BW 1536 Kbit, DLY 20000 usec,
reliability 250/255, txload 42/255, rxload 27/255
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 00:00:07, output hang never
Last clearing of "show interface" counters 6d07h
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 166000 bits/sec, 179 packets/sec
5 minute output rate 255000 bits/sec, 215 packets/sec
22501843 packets input, 2814873712 bytes, 0 no buffer
Received 0 broadcasts, 17 runts, 0 giants, 0 throttles
517686 input errors, 517676 CRC, 297214 frame, 212862 overrun, 0 ignored, 270515 abort
26181395 packets output, 163117071 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
Timeslot(s) Used:1-24, SCC: 0, Transmitter delay is 0 flags
Remote Site:
1841 Router
!
interface Multilink1
description // Connection to T1s //
ip address 10.161.0.2 255.255.255.0
ppp multilink
ppp multilink group 1
service-policy output WAN-EDGE-DATA-VOICE
!
interface Serial0/0/0
no ip address
encapsulation ppp
fair-queue
ppp multilink
ppp multilink group 1
!
interface Serial0/1/0
no ip address
encapsulation ppp
fair-queue
ppp multilink
ppp multilink group 1
!
Show interface output:
BIM-1841#sho interface Serial0/0/0
Serial0/0/0 is up, line protocol is up
Hardware is GT96K with integrated T1 CSU/DSU
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,
reliability 246/255, txload 26/255, rxload 41/255
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 00:00:00, output hang never
Last clearing of "show interface" counters 6d07h
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: weighted fair [suspended, using FIFO]
FIFO output queue 0/40, 0 drops
5 minute input rate 251000 bits/sec, 198 packets/sec
5 minute output rate 160000 bits/sec, 170 packets/sec
26191137 packets input, 174381990 bytes, 0 no buffer
Received 0 broadcasts, 19 runts, 0 giants, 0 throttles
567471 input errors, 567468 CRC, 328536 frame, 241342 overrun, 0 ignored, 296717 abort
22618819 packets output, 2830748840 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
0 output buffer failures, 0 output buffers swapped out
1 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up
Originally had problems with the fair-queue command - and the above details are what finally made everything work. Not sure what is going on now.
Thanks.
Tim
