Cisco Broadband Cable, Справочное руководство

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Cisco Broadband Cable Command Reference Guide
OL-1581-08
Chapter 2 Cisco CMTS Configuration Commands
hccp track
Using hccp track with hccp revertive
As a general rule, if you are using the hccp track command on a cable interface, do not also configure
the hccp revertive command without also configuring no keepalive on the cable interface. Configuring
both commands on the same interface, along with keepalives, can cause multiple switchovers on the
same fault.
If you want to use keepalives along with both the hccp track and hccp revertive commands,use the hccp
track command on both the Working and Protect interfaces, so that the Working interfaces on the same
card track each other and the Protect interfaces on the same card track each other. Table 2-17 summarizes
the guidelines for using these three commands:
Examples
The following example shows switchover behavior being enabled on a Cisco CMTS in group 2:
Router(config)# interface c3/0
Router(config-if)# hccp 2 track
Router(config-if)# keepalive
Router(config-if)#
The following example shows two Cisco uBR-LCP2-MC28C cards being used in a Cisco uBR10012
router, with each downstream being configured for a separate HCCP group. The card in slot 5/1 is being
configured as the Working interfaces and the card in slot 6/1 is being configured as the Protect interfaces.
The two downstreams on each card track each other, so if one downstream fails and switches over, the
other can do so as well, allowing the Protect card to assume full control of both interfaces. Similarly,
when the Working interfaces come back into service, both Protect interfaces switch back at the same
time.
Router(config)# interface cable c5/1/0
Router(config-if)# hccp 1 working 1
Router(config-if)# hccp 1 track c5/1/1
Router(config-if)# keepalive 3
Router(config-if)# exit
Router(config)# interface cable c5/1/1
Router(config-if)# hccp 2 working 1
Router(config-if)# hccp 2 track c5/1/0
Router(config-if)# keepalive 3
Router(config-if)# exit
Router(config)# interface cable c6/1/0
Router(config-if)# hccp 1 protect 1 ip-address-of-mgmt-lan
Router(config-if)# hccp 1 track c6/1/1
Router(config-if)# keepalive 3
Router(config-if)# exit
Router(config)# interface cable c6/1/1
Router(config-if)# hccp 2 protect 1 ip-address-of-mgmt-lan
Router(config-if)# hccp 2 track c6/1/0
Router(config-if)# keepalive 3
Router(config-if)#
Table 2-17 Possible hccp track and hccp revertive Configurations
hccp track
(Working I/Fs) hccp track
(Protect I/Fs)
hccp revertive keepalive Configuration
Yes No No keepalive or no keepalive
Yes No Yes no keepalive
Yes Yes Yes keepalive or no keepalive