3.12.1 Identifying priorities

When traffic (frames whose destination IP address is 192.168.100.10) flows into a line, use the show qos queueing command to check the queue number. The target Ethernet interface is port 1/0/2.

Figure 3-20: Checking priority
> show qos queueing 1/0/2 Date 20XX/03/01 13:00:00 UTC Switch1/NIF0/Port2 (outbound) Max_Queue=12, Rate_limit=64kbit/s, Burst_size=4kbyte, Qmode=pq/tail_drop Queue 1: Qlen= 0, Limit_Qlen= 2880, HOL1= 0 Queue 2: Qlen= 0, Limit_Qlen= 2880, HOL1= 0 Queue 3: Qlen= 0, Limit_Qlen= 2880, HOL1= 0 Queue 4: Qlen= 0, Limit_Qlen= 2880, HOL1= 0 Queue 5: Qlen= 0, Limit_Qlen= 2880, HOL1= 0 Queue 6: Qlen= 1, Limit_Qlen= 2880, HOL1= 0 .. 1 Queue 7: Qlen= 0, Limit_Qlen= 2880, HOL1= 0 Queue 8: Qlen= 0, Limit_Qlen= 2880, HOL1= 0 Queue 9: Qlen= 0, Limit_Qlen= 2880, HOL1= 0 Queue 10: Qlen= 0, Limit_Qlen= 2880, HOL1= 0 Queue 11: Qlen= 0, Limit_Qlen= 2880, HOL1= 0 Queue 12: Qlen= 0, Limit_Qlen= 2880, HOL1= 0 Tail_drop= 0

Figure 3-20: Checking priority

> show qos queueing 1/0/2
Date 20XX/03/01 13:00:00 UTC
Switch1/NIF0/Port2 (outbound)
 Max_Queue=12, Rate_limit=64kbit/s, Burst_size=4kbyte, Qmode=pq/tail_drop
  Queue  1: Qlen=    0, Limit_Qlen= 2880, HOL1=         0
  Queue  2: Qlen=    0, Limit_Qlen= 2880, HOL1=         0
  Queue  3: Qlen=    0, Limit_Qlen= 2880, HOL1=         0
  Queue  4: Qlen=    0, Limit_Qlen= 2880, HOL1=         0
  Queue  5: Qlen=    0, Limit_Qlen= 2880, HOL1=         0
  Queue  6: Qlen=    1, Limit_Qlen= 2880, HOL1=         0 .. 1
  Queue  7: Qlen=    0, Limit_Qlen= 2880, HOL1=         0
  Queue  8: Qlen=    0, Limit_Qlen= 2880, HOL1=         0
  Queue  9: Qlen=    0, Limit_Qlen= 2880, HOL1=         0
  Queue 10: Qlen=    0, Limit_Qlen= 2880, HOL1=         0
  Queue 11: Qlen=    0, Limit_Qlen= 2880, HOL1=         0
  Queue 12: Qlen=    0, Limit_Qlen= 2880, HOL1=         0
 Tail_drop=         0

Make sure that the Qlen value for Queue6 has a count value.