[nsp] ATM/IMA and Multilink-group

From: TMS (tomek@absolut.vinyl.pl)
Date: Tue May 28 2002 - 10:23:50 EDT


Hello

I have two offices in two diffrent buildings. The are connected
for now using 4 port ATM/IMA interfaces. But 4xE1 is too small
bandwidth for me, so I installed next 4 port ATM/IMA cards. I tryed
multilink-group and multilink interface for create 1 logical interface
from 2 phycials ATM/IMA links, but multilink interface is down :(

Network diagram:

    ATM2/ima0 <--- 4xE1 ---> ATM3/ima0
C3640 C3660
    ATM3/ima0 <--- 4xE1 ---> ATM4/ima0

C3640 configuration:

interface ATM2/ima0
 bandwidth 8000
 no ip address
 ima clock-mode independent
 atm ilmi-enable
 atm pvc 1 32 1 aal5snap inarp
 multilink-group 1
!
interface ATM3/ima0
 bandwidth 8000
 no ip address
 ima clock-mode independent
 atm ilmi-enable
 atm pvc 2 32 2 aal5snap inarp
 multilink-group 1
!
interface Multilink 1
 ip address 10.10.10.1 255.255.255.252
 no ip route-cache cef
 no ip redirects
 no ip proxy-arp
 ppp multilink
 multilink-group 1
!

on C3660 configuration is indetical, only interfaces number and
ip address
are diffrent.

Interfaces status:

ATM2/ima0 is up/up (protocol,line)
ATM3/ima0 is up/up
Multilunk 1 is down/down

ATM3/ima0 is up/up
ATM4/ima0 is up/up
Multilink 1 is down/down

And idea how to resolv this problem ?

-- 
TMS



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