Cisco ME 3400 Software Configuration Manual page 999

Chapter 43 Configuring MSDP
Beginning in privileged EXEC mode, follow these steps to specify a default MSDP peer. This procedure
is required.
Command
Step 1 configure terminal
Step 2
ip msdp default-peer ip-address | name
[prefix-list list]
Step 3 ip prefix-list name [description string] |
seq number {permit | deny} network
length
Step 4 ip msdp description {peer-name |
peer-address} text
Step 5
end
Step 6
show running-config
Step 7 copy running-config startup-config
To remove the default peer, use the no ip msdp default-peer ip-address | name global configuration
command.
This example shows a partial configuration of Router A and Router C in
have more than one customer (like the customer in
MBGP). In that case, they might have similar configurations. That is, they accept SAs only from a default
peer if the SA is permitted by the corresponding prefix list.
OL-9639-07
Purpose
Enter global configuration mode.
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.
(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.
(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.
Return to privileged EXEC mode.
Verify your entries.
(Optional) Save your entries in the configuration file.
Figure
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
Figure 43-2. Each of these ISPs
43-2) who use default peering (no BGP or
Configuring MSDP
43-5