Users Guide

View CoPP statistics
OS10# show control-plane statistics
Queue Packets Bytes Dropped Packets Dropped Bytes
0 0 0 0 0
1 0 0 0 0
2 0 0 0 0
3 0 0 0 0
4 0 0 0 0
5 2 172 0 0
6 0 0 0 0
7 32048 2180484 0 0
8 14140 2569184 0 0
9 0 0 0 0
10 0 0 0 0
11 0 0 0 0
Queue management
Queues share buer memory space.
All packets in a queue are transmitted, until the queue size reaches a minimum threshold. When the queue size reaches that minimum
threshold, the system starts discarding packets with a certain probability. The probability of discard increases until the queue depth reaches
the maximum threshold. After a queue depth exceeds the maximum threshold, all other packets that attempt to enter the queue are
discarded.
In S5148F-ON, ow based coloring is not supported.
Consider the following while conguring buer proles on S5148F-ON.
• You can congure buer proles based on the speed of ports.
• When you congure buer prole on a port with any speed, the same conguration is applicable to the port even if the speed of the
port changes after auto negotiation. For example, if you congure a buer prole on a 25G port, the same buer conguration is
applied when the port acquires 10G speed due to auto negotiation.
• Ingress buer conguration:
– Congure the lossy buer prole on the port and not on priority group, with shared static threshold reaching the maximum switch
buer size. Dynamic threshold mode is not supported.
– Congure the lossless LLFC buer prole on the port and not on priority group, without enabling sharing. The total reserved buer
size is the minimum guaranteed size + headroom size.
– Congure the PFC buer prole on the priority group queue. You cannot modify the trac class to priority group mapping. Shared
buer is not allocated for lossless PFC pool. Each priority group is provided with reserved buers that include both minimum
guaranteed buer size and headroom size.
– You can map a priority group on each port to the same pool.
• Egress buer conguration:
– When ingress is lossy, congure a reserved minimum buer size for the egress queue. The shared threshold must be dynamic.
– When a queue is lossless, congure a dynamic threshold with default alpha value of 10 that allows active queues to extend up to
88% of the lossless pool size.
– S5148F-ON does not support static shared threshold on egress buers.
1 Congure WRED prole in the CONFIGURATION mode.
wred wred-profile-name
2 Congure WRED threshold parameters for dierent colors in the WRED CONFIGURATION mode.
random-detect color color-name minimum-threshold threshold-value maximum-threshold threshold-
value drop probability percent
3 Congure the exponential weight value for the WRED prole in the WRED CONFIGURATION mode.
random-detect weight weight-value
Quality of service
457