Cisco Bug: CSCuj17120 - DOC: ASA flow control watermarks are different for 4GE-SSM interfaces
Nov 08, 2016
- Cisco ASA 5500-X Series Firewalls
Known Affected Releases
Symptom: When enabling flow control on an interface that is part of the 4GE-SSM, the available settings for the high and low watermarks are 0-11 KB due to architectural differences in the module. The ASA command reference needs to be updated with the following to reflect this: high_water: Sets the high-water mark, between 0 and 511 KB for 10 GigabitEthernet, and between 0 and 47 KB for 1 GigabitEthernet (or 0 and 11 KB for GigabitEthernet interfaces on the 4GE-SSM). When the buffer usage exceeds the high-water mark, the NIC sends a pause frame. low_water: Sets the low-water mark, between 0 and 511 KB for 10 GigabitEthernet, and between 0 and 47 KB for 1 GigabitEthernet (or 0 and 11 KB for GigabitEthernet interfaces on the 4GE-SSM). After the network interface controller (NIC) sends a pause frame, when the buffer usage is reduced below the low-water mark, the NIC sends an XON frame. The link partner can resume traffic after receiving an XON frame. Conditions: This is a request to update the ASA's command reference documentation.
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