cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
199
Views
0
Helpful
1
Replies

36xx ATM IMA network with erratic response time, need queuing?

jtodom
Level 1
Level 1

There is erratic response times over the ATM/IMA network. I suspect the FIFO queuing is the problem.

The networks consists of ATM over T1s through IMA/nT1 adapters on 3662 and 3640s. The ATM network uses VBR-NRT PVCs with PCS/SCR/MBS stetings match the carrier switches.

Symptoms are erratic response time during periods of moderate utilization and bursts of output drops.

I suspect the queuing using FIFO(default) is hurting. I suspect a better queuing strategy would help, such as CBWFQ with LLQ. The doc I found does not apply to the 36xx IMAs.

The IOS is 12.2(8)T1. There is no voice on the network. CPU usage is 2-5%.

Questions I have include; How do I find out what the default TX-RING-LIMIT currently is? Can I implement CBWFQ similar to WFQ? Which docs cover this for the 36xx line?

1 Reply 1

ciscomoderator
Community Manager
Community Manager

Since there has been no response to your post, it appears to be either too complex or too rare an issue for other forum members to assist you. If you don't get a suitable response to your post, you may wish to review our resources at the online Technical Assistance Center (http://www.cisco.com/tac) or speak with a TAC engineer. You can open a TAC case online at http://www.cisco.com/tac/caseopen

If anyone else in the forum has some advice, please reply to this thread.

Thank you for posting.

Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: