Tag :: MMU Mirror on Drop

Packet trimming is a novel method for end-to-end congestion notification. When a packet is dropped in the MMU due to congestion, the dropped packet is trimmed and forwarded to the intended receiver with a new configured DSCP value. Upon receiving a trimmed packet, the receiver can perform appropriate handling to reduce transmission rate or retransmit any lost packets. The feature supports matching criteria via ingress traffic policy for selecting which packets should be trimmed when they get dropped in the MMU. Similarly, the rewritten DSCP is specified on a per egress port basis for trimmed packets egressing out of the switch to the intended destination.This feature is supported for protocols IPv4, IPv6 and SRv6. 

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