Description

Behavior of sBFD with respect to COS and PPMD

sBFD Initiator:
1)Egress firewall can not change DSCP for no-delegated sBFD
2)sBFD initiator's EXP bit does not inherit DSCP bit
3)sBFD initiator does not follow host-outbound-traffic in case of "no-delegate-processing"
4)sBFD initiator does not follow CoS rewrite-rule in case of "no-delegate-processing"

sBFD Reflector:
sBFD reflector will send Q0 even if host-outbound-traffic specify other queue

Symptoms

Configuring sBFD with CoS and no-delegated processing

Solution

The DSCP remarking can not work at the kernel level as it cannot look into the inner header to change the parameters for sBFD initiator packets.
 

Modification History

2024-08-07 : Article Created