Configuring Ingress Cos Mutation On Ieee 802.1Q Tunnel Ports - Cisco 7604 Configuration Manual

Chapter 41 Configuring PFC QoS

Configuring Ingress CoS Mutation on IEEE 802.1Q Tunnel Ports

The Supervisor Engine 2 does not support the switching modules that support ingress CoS mutation.
Note
Release 12.2(17b)SXA and later releases support ingress CoS mutation on IEEE 802.1Q tunnel ports
configured to trust received CoS (see the
Restrictions" section on page 41-85
When you configure ingress CoS mutation on an IEEE 802.1Q tunnel port that you have configured to
trust received CoS, PFC QoS uses the mutated CoS value instead of the received CoS value in the ingress
drop thresholds and for any trust CoS marking and policing.
These sections describe how to configure ingress CoS mutation:
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Ingress CoS Mutation Configuration Guidelines and Restrictions
When configuring ingress CoS mutation, follow these guidelines and restrictions:
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OL-4266-08
Ingress CoS Mutation Configuration Guidelines and Restrictions, page 41-85
Configuring Ingress CoS Mutation Maps, page 41-86
Applying Ingress CoS Mutation Maps to IEEE 802.1Q Tunnel Ports, page 41-87
Release 12.2(17b)SXA and later releases support ingress CoS mutation on WS-X6704-10GE,
WS-X6748-SFP, WS-X6724-SFP, and WS-X6748-GE-TX switching modules.
Ports that are not configured as IEEE 802.1Q tunnel ports do not support ingress CoS mutation.
Ports that are not configured to trust received CoS do not support ingress CoS mutation.
Ingress CoS mutation does not change the CoS value carried by the customer frames. When the
customer traffic exits the 802.1Q tunnel, the original CoS is intact.
Ingress CoS mutation configuration applies to all ports in a port group. The port groups are:
WS-X6704-10GE—4 ports, 4 port groups, 1 port in each group
–
WS-X6748-SFP—48 ports, 4 port groups: ports 1–12, 13–24, 25–36, and 37–48
–
– WS-X6724-SFP—24 ports, 2 port groups: ports 1–12 and 13–24
– WS-X6748-GE-TX—48 ports, 4 port groups: ports 1–12, 13–24, 25–36, and 37–48
To avoid ingress CoS mutation configuration failures, only create EtherChannels where all member
ports support ingress CoS mutation or where no member ports support ingress CoS mutation. Do not
create EtherChannels with mixed support for ingress CoS mutation.
If you configure ingress CoS mutation on a port that is a member of an EtherChannel, the ingress
CoS mutation is applied to the port-channel interface.
You can configure ingress CoS mutation on port-channel interfaces.
With ingress CoS mutation configured on a port-channel interface, the following occurs:
– The ingress CoS mutation configuration is applied to the port groups of all member ports of the
EtherChannel. If any member port cannot support ingress CoS mutation, the configuration fails.
If a port in the port group is a member of a second EtherChannel, the ingress CoS mutation
–
configuration is applied to the second port-channel interface and to the port groups of all
member ports of the second EtherChannel. If any member port of the second EtherChannel
Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX
"Ingress CoS Mutation Configuration Guidelines and
for the list of supported modules).
Configuring PFC QoS
41-85