Cisco 3640 multiLink help

[kingdomware]

Hi,

I have 3 new MLPPP T-1 configured on my Cisco 3640 as multilink group 2. The following bad diagram shows how they are configured.

-----------------
|T1 T2
| FE
-----------------
T3| Used By
| Other T1s
-----------------

All lights are green but the problem I am having is T3 shows down even though I have it part of the multilink group2. See Below. My Runnging config is also below. Am I supposed to do somthing to get T3 up and part of Multilink group 2?

Thanks

Serial1/0 is down, line protocol is down
Hardware is DSCC4 with integrated T1 CSU/DSU
MTU 1500 bytes, BW 1536 Kbit, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation PPP, LCP Closed, multilink Closed, loopback not set
Keepalive not set
Last input never, output never, output hang never
Last clearing of "show interface" counters 13:40:26
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 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 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
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 1640 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DCD=up DSR=up DTR=down RTS=down CTS=up



--------------------------------
interface Multilink2
ip address x.x.x.x 255.255.255.252
no cdp enable
ppp multilink
ppp multilink group 2
!
interface Serial1/0
bandwidth 1536
no ip address
no ip redirects
no ip proxy-arp
encapsulation ppp
tx-ring-limit 26
tx-queue-limit 26
no keepalive
no fair-queue
no cdp enable
ppp multilink
ppp multilink group 2
!
interface FastEthernet2/0
description connection to customer LAN
ip address x.x.x.x 255.255.255.192
no ip redirects
no ip unreachables
no ip proxy-arp
no ip mroute-cache
duplex auto
speed auto
no cdp enable
!
interface Serial2/0
bandwidth 1536
no ip address
no ip redirects
no ip proxy-arp
encapsulation ppp
tx-ring-limit 26
tx-queue-limit 26
no keepalive
no fair-queue
no cdp enable
ppp multilink
ppp multilink group 2
!
interface Serial2/1
bandwidth 1536
no ip address
no ip redirects
no ip proxy-arp
encapsulation ppp
tx-ring-limit 26
tx-queue-limit 26
no keepalive
no fair-queue
no cdp enable
ppp multilink
ppp multilink group 2
!
no ip http server
no ip http secure-server
ip route 0.0.0.0 0.0.0.0 xxxx
ip route 0.0.0.0 0.0.0.0 xxxxx

 

[plshlpme]

have you verified the optioning on the t3?
clocking? line coding framing?

is it a serial connection into a csu? or is this crossed over into another router?

if this is p2p can you have the telco put a loop and see if that brings the interface up...

what testing have you done? was the t3 up and running before you added it to the multilink config?

 

[kingdomware]

Hi,

I moved the network module to slot 3 and rebooted. I works now.

Thanks