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3-20
Cisco AVVID Network Infrastructure Enterprise Quality of Service Design
956467
Chapter 3 QoS in an AVVID-Enabled Campus Network
Selecting an Access-Layer Switch
Example 3-2
Displaying QoS Runtime Information
cat6k-access>(enable) show qos info run 5/1
Run time setting of QoS:
QoS is enabled
Policy Source of port 5/1: Local
Current 10/100 "1" linecards support 2q2t/1q4t only
Tx port type of port 5/1 : 2q2t
Rx port type of port 5/1 : 1q4t
Interface type: vlan-based
ACL is mapped to VLAN
ACL attached:
The qos trust type is set to trust-cos.
Warning: Runtime trust type set to untrusted.
Default CoS = 0
Queue and Threshold Mapping for 2q2t (tx):
Queue Threshold CoS
----- --------- ---------------
1 1 0 1
1 2 2
2 1 3 4 5
2 2 6 7
Queue and Threshold Mapping for 1q4t (rx):
Queue Threshold CoS
----- --------- ---------------
1 1 0 1
1 2 2
1 3 3 4 5
1 4 6 7
Example 3-3
Displaying MAC Information
cat6k-access> (enable) show mac 5/1
Port Rcv-Unicast Rcv-Multicast Rcv-Broadcast
-------- -------------------- -------------------- --------------------
5/1 267223 37 4
Port Xmit-Unicast Xmit-Multicast Xmit-Broadcast
-------- -------------------- -------------------- --------------------
5/1 28748894 5206 72
Port Rcv-Octet Xmit-Octet
-------- -------------------- --------------------
5/1 17178128 1840430081
"Out-Discards" are packets drooped due to congestion in the tx interface buffers
MAC Dely-Exced MTU-Exced In-Discard Out-Discard
-------- ---------- ---------- ---------- -----------
5/1 0 0 0 262140
Example 3-4
Displaying QoS Summary Statistics
cat6k-access> (enable) show qos stat l3
VoIP Control packets that have been re-written with CoS=3/DSCP=26 (AF31)
Packets dropped due to policing: 0
IP packets with ToS changed: 1885
IP packets with CoS changed: 781
Non-IP packets with CoS changed: 0