Tag Archives: SSH

Cisco IOS Management Plane Default QoS

Just an observation.

Cisco IOS routers and switches mark locally originated SSH and Telnet traffic with 802.1p = 6, DSCP = CS6 (48). That is, if you initiate an SSH session to the router, the returning traffic will have DSCP set to CS6. It’s a bit weird because Cisco IOS CLI states that default DSCP value for locally originated SSH packets is 0. Continue reading