Verification Examples For Dscp-Based Wred - Cisco 10000 Series Configuration Manual

Chapter 11 Managing Packet Queue Congestion

Verification Examples for DSCP-Based WRED

Example 11-7
DSCP-based weighted random early detection is configured on the nyusers class queue. The output
shows the exponential weight of 9 used to calculate the average queue size. In this case, WRED has not
dropped any packets based on DSCP 8 and DSCP 0 (default).
Example 11-7 Displaying DSCP-Based WRED Statistics
Router# show policy-map interface GigabitEthernet 3/0/0
GigabitEthernet3/0/0
Service-policy output: manhattan
OL-7433-09
Current average queue length: 0 packets
-------------------------------------------------
Min
-------------------------------------------------
0 16
1 18
2 20
3 22
4 24
5 26
6 28
7 30
Queue-limit: 64 packets
Class-map: class-default (match-any) (1066/0)
158641 packets, 5931487 bytes
5 minute offered rate 0 bps, drop rate 0 bps
Match: any (1067)
158641 packets, 5931487 bytes
5 minute rate 0 bps
Output queue: 0/128; 31672/1695625 packets/bytes output, 0 drops
shows sample output for the show policy-map interface command. In this example,
Class-map: nyusers (match-all)
0 packets, 0 bytes
5 minute offered rate 0 bps, drop rate 0 bps
Match: access-group 101
Output queue: 0/128; 0/0 packets/bytes output, 0 drops
Bandwidth : 47 kbps (Weight 0)
Random-detect (DSCP-based):
Exponential weight: 9 (1/512)
Current average queue length: 0 packets
------------------------------------------------------
Diff-Serv Min Max
codepoint thres thres
------------------------------------------------------
8 24 40
Default 64 128
Class-map: class-default (match-any)
0 packets, 0 bytes
5 minute offered rate 0 bps, drop rate 0 bps
Match: any
Output queue: 0/4096; 0/0 packets/bytes output, 0 drops
Max Prob Rand-Drops Tail-Drops
32 1/10 0
32 1/10 0
32 1/10 0
32 1/10 0
32 1/10 0
32 1/10 0
32 1/10 0
32 1/10 0
Mark Rand-Drops Tail-Drops
probability
1/50 0
1/10 0
Cisco 10000 Series Router Quality of Service Configuration Guide
Verifying and Monitoring Layer 3 Packet Dropping
0
0
0
0
0
0
0
0
0
0
11-35