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Cisco Bug: CSCul94087 - IMA output packet drops on CISCO7609 over SPA-24CHT1-CE-ATM

Last Modified

Jan 28, 2017

Products (1)

  • Cisco 7600 Series Routers

Known Affected Releases

15.2(4)S

Description (partial)

Symptom:
Output Packet drops is observed on the ATM IMA interface even when there is no live traffic and only signalling exchange between non-Cisco devices.
Although output drops in most cases means low bandwidth issues but in this case, an entire site was down due to these drops.

Conditions:
This symptom occurs under the following conditions:

1. Layer 2 cross connect is configured on Cisco device and Non - Cisco device at other end.

2. Only signalling traffic flows through the devices.

3. IMA group is created for the ATM connectivity.

4.SPA-24CHT1-CE-ATM card is to be used for the ATM connection.
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