Cisco PIX 525 Specifikace stáhnout pdf (Strana 105)

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Cisco Security Appliance Command Line Configuration Guide

OL-6721-01

Chapter 8 Configuring IP Routing and DHCP Services

Configuring Multicast Routing

To configure the address of the PIM PR, enter the following command:

hostname(config)# pim rp-address

ip_address

[

acl

] [bidir]

The ip_address argument is the unicast IP address of the router to be a PIM RP. The acl argument is the

name or number of an access list that defines which multicast groups the RP should be used with.

Excluding the bidir keyword causes the groups to operate in PIM sparse mode.

Note The security appliance always advertises the bidir capability in the PIM hello messages regardless of the

actual bidir configuration.

Configuring the Designated Router Priority

The DR is responsible for sending PIM register, join, and prune messaged to the RP. When there is more

than one multicast router on a network segment, there is an election process to select the DR based on

DR priority. If multiple devices have the same DR priority, then the device with the highest IP address

becomes the DR.

By default, the security appliance has a DR priority of 1. You can change this value by entering the

following command:

hostname(config-if)# pim dr-priority

num

The num argument can be any number from 1 to 4294967294.

Filtering PIM Register Messages

You can configure the security appliance to filter PIM register messages. To filter PIM register messages,

enter the following command:

hostname(config)# pim accept-register {list

acl

| route-map

map-name

}

Configuring PIM Message Intervals

Router query messages are used to elect the PIM DR. The PIM DR is responsible for sending router

query messages. By default, router query messages are sent every 30 seconds. You can change this value

by entering the following command:

hostname(config-if)# pim hello-interval

seconds

Valid values for the seconds argument range from 1 to 3600 seconds.

Every 60 seconds, the security appliance sends PIM join/prune messages. To change this value, enter the

following command:

hostname(config-if)# pim join-prune-interval

seconds

Valid values for the seconds argument range from 10 to 600 seconds.

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