Cisco IE 4000, Software Configuration Manual

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Configuring MSDP
Configuring MSDP
DETAILED STEPS
Table 0-1
Command Purpose
1. configure terminal Enter global configuration mode.
2. ip msdp default-peer ip-address |
name [ prefix-list list ]
Define a default peer from which to accept all MSDP SA
messages.

For ip-address | name , enter the IP address or Domain
Name System (DNS) server name of the MSDP default
peer.

(Optional) For prefix-list list , enter the list name that
specifies the peer to be the default peer only for the listed
prefixes. You can have multiple active default peers when
you have a prefix list associated with each.
When you enter multiple ip msdp default-peer
commands with the prefix-list keyword, you use all the
default peers at the same time for different RP prefixes.
This syntax is typically used in a service provider cloud that
connects stub site clouds.
When you enter multiple ip msdp default-peer
commands without the prefix-list keyword, a single active
peer accepts all SA messages. If that peer fails, the next
configured default peer accepts all SA messages. This
syntax is typically used at a stub site.
3. ip prefix-list name [ description
string ] | seq number { permit | deny }
network length
(Optional) Create a prefix list using the name specified in Step
2.

(Optional) For description string , enter a description of up
to 80 characters to describe this prefix list.

For seq number, enter the sequence number of the entry.
The range is 1 to 4294967294.

The deny keyword denies access to matching conditions.

The permit keyword permits access to matching
conditions.

For network length , specify the network number and
length (in bits) of the network mask that is permitted or
denied.
4. ip msdp description { peer-name |
peer-address } text
(Optional) Configure a description for the specified peer to
make it easier to identify in a configuration or in
show
command output.
By default, no description is associated with an MSDP peer.
5. end Return to privileged EXEC mode.
6. show running-config Verify your entries.
7. copy running-config
startup-config (Optional) Save your entries in the configuration file.