TOI Author :: Sahil Midha

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. 

This feature can be divided into 3 parts. Enable support for different threshold per Color per TX queue  We

Link Fault Signalling (LFS) is a mechanism by which remote link faults are asserted over a link experiencing

QoS profiles have been applicable on fabric and front panel ports across all platforms from EOS 4.17.0F release

The show command 'show qos interface fabric' was introduced for DCS 7250QX and DCS 7300X series starting EOS

Since, now there can be multiple inputs, conflicts may arise. Non conflicting configurations are when non default

Stream Control Transmission Protocol (132) is a transport layer protocol, much like TCP. After the IP header, a

For packets sent and received on the front-panel interfaces, this feature allows creation of a profile to configure buffer reservations in the MMU (MMU = Memory Management Unit which manages how the on-chip packet buffers are organized). The profile can contain configurations for ingress and egress. On the ingress, configuration is supported at both a port level as well as a priority-group level. 

Permitting traffic during ACL updates has been available for traffic steering in tap aggregation mode since EOS