Reference Guide

View policy-map
OS10(conf-if-eth1/1/5)# do show policy-map
Service-policy(queuing) output: solar
Class-map (queuing): magnum
priority
Buer management
OS10 devices distribute the total available buer resources into two buer pools at ingress direction and three buer pools at egress
direction of all the physical ports.
All ports in a system are allocated a certain amount of buers from corresponding pools, based on the conguration state of each priority-
group or queue. The remaining buers in the pool are shared across all similarly congured ports.
The following buer pools are available:
• Ingress buer pools:
– Lossy pool (default)
– Lossless pool (PFC)
• Egress buer pools:
– Lossy pool (default)
– Lossless pool (PFC)
– CPU pool (CPU control trac)
For example, when all ports are allocated reserved buers from the lossy (default) pool, the remaining buers in the lossy pool are shared
across all ports, except the CPU port.
When you enable priority ow control (PFC) on the ports, all the PFC enabled queues and priority-groups use the buers from the lossless
pool.
OS10 dedicates a separate buer pool for CPU trac. All default reserved buers for CPU port queues are from the CPU pool, and the
remaining buers are shared across all CPU queues. You can modify the buer settings of CPU queues.
OS10 allows conguration of buers per priority-group and queue for each port.
The buer usage accounting happens for ingress packets on ingress pools and egress packets on egress pool. You can congure ingress
packets buer accounting per priority-group and egress packet buer accounting per queue level.
Congure ingress buer
Default settings
In the default settings for ingress buers, all trac classes are mapped to the default priority group and the buers are reserved per default
priority group ID 7. All buers are part of the default pool and all ports share buers from the default pool.
The reserved buer size is 9360 bytes for the speed of 10G, 25G, 40G, 50G, and 100G. The supported speed varies for dierent platforms.
The following table lists the maximum buer size for dierent platforms.
Quality of service
677