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Cisco 12000/10700 v3.1.1 Router Manager User Guide
OL-4455-01
Chapter 11 Layer 3 QoS
CAR Policy Configuration
• Available exceed-actions are:
–
drop (drop packet)
–
set-prec-transmit (rewrite packet precedence and send it)
–
transmit (transmit packet)
If an attempt is made to apply a CAR policy to an engine 2 module, then the request will be refused and
an appropriate error message is displayed, if an attempt is made to use CAR functionality other than that
listed above.
On engine 0 and 1 modules, the full range of CAR functions is supported.
Limited Support for Engine 4
The Engine-4 line cards (10 Port GigaEthernet and 1 Port OC-192 POS) have the following limitations
for applying CAR policies.
1. It is not PIRC Supported.
2. Traffic direction is restricted to Input Only.
3. ACL can be only IP-Precedence (ACL Index can have only 1-99).
4. Rate limited ACLs can be only IP-Precedence (ACL Index can have only 1-99).
5. Confirm-Action can be: Drop, Transmit and Set Prec. to X transmit.
6. Exceed-Action can be: Drop, Transmit and Set Prec. to Y transmit.
Creating a CAR Policy
To create a CAR policy, proceed as follows:
Step 1 Choose Cisco 12000/10720 Manager>Configuration>Interface>QoS>CAR Policy Configuration
from a relevant object to launch the CAR Policy Configuration window. See Table 11-1 on page 11-2 for
information on which objects allow you to launch the CAR Policy Configuration window.