From: Tao Yang (tyang@xxxxxxxxxxxx)
Date: Wed Nov 14 2001 - 13:45:13 GMT-3
Excerpt from Cisco:
"Before Cisco IOS. Software Release 12.0(11)S and 12.1(3)E, ATM physical
interfaces configured as a member of an IMA group could have a "line
protocol is down" status even though the IMA interface was up/up and passed
traffic without any problems. This state could occur on the Cisco 7200
router series because the ATM interfaces are the raw links, and all
protocol-related configuration is done on the virtual IMA interface. Cisco
Bug ID CSCdr22203 changed this default behavior on the 7200 router. On the
7500 and 3600 series, the line protocol status on the ATM physical
interfaces is brought up when the links are operational. "
----- Original Message -----
From: "Murphy, Brennan" <Brennan_Murphy@NAI.com>
To: <ccielab@groupstudy.com>
Sent: Wednesday, November 14, 2001 11:13 AM
Subject: OT: ATM troubles
> We're building out an ATM network and having trouble with a couple sites.
> We have Cisco 7200s in the hubs and 3600s with 4 port IMAs at the
> remote sites. I can loop the line on the 3600 and from the 7200 ping
> the local interface....the ping travels across the pvc to the 3600 and
> back. But when we normalize the circuit, we have interface up and
> line protocol down. The hub router is working fine with other PVCs.
> Anyone every have any problems with the 4 port IMA on an E1 circuit?
> Thanks
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