Hello,
I'm using 3845 router with ATM card. I have a few 10Mbps PVCs, and a few small speed PVCs - for example 512Kbps. I observed congested high speed PVC impacts low speed. Low speed PVCs have output drops and big delay with transmit packets.
How to resolve this problem ?
rawes
The problem is likely that packets destined for the congested PVC uses all of the buffers on the tx_ring, so packets destined for the other PVC's either gets dropped due to no buffers available in the tx_ring, or have wait to get serviced until all the packets going to the congested PVC gets sent as the tx_ring is a FIFO buffer.
I don't recall what the command is to configured a limit on a per vc basis, it might even be hidden. At my previous employer we used this on 7200/7500's with PA-A3 cards to solve this exact problem.
If you open a TAC case they should be able to help you.
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