Cisco IE 4000, Software Configuration Manual

Page: 755 / 1066

751
Configuring MSDP
Verifying Configuration
Verifying Configuration
To clear MSDP connections, statistics, or SA cache entries, use the following privileged EXEC commands:
Configuration Example
This example shows a partial configuration of Router A and Router C in Figure 93 on page 734 . Each of these ISPs have
more than one customer (like the customer in Figure 93 on page 734 ) who use default peering (no BGP or 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.
Router A
Router(config)# ip msdp default-peer 10.1.1.1
Router(config)# ip msdp default-peer 10.1.1.1 prefix-list site-a
Router(config)# ip prefix-list site-b permit 10.0.0.0/1
Router C
Router(config)# ip msdp default-peer 10.1.1.1 prefix-list site-a
Router(config)# ip prefix-list site-b permit 10.0.0.0/1
This example shows how to enable the cache state for all sources in 171.69.0.0/16 sending to groups 224.2.0.0/16:
Switch(config)# ip msdp cache-sa-state 100
Switch(config)# access-list 100 permit ip 171.69.0.0 0.0.255.255 224.2.0.0 0.0.255.255
Table 45-58
Command Purpose
debug ip msdp [ peer-address | name ] [ detail ]
[ routes ]
Debugs an MSDP activity.
debug ip msdp resets Debugs MSDP peer reset reasons.
show ip msdp count
[ autonomous-system-number ]
Displays the number of sources and groups
originated in SA messages from each autonomous
system. The
ip msdp cache-sa-state command
must be configured for this command to produce any
output.
show ip msdp peer [ peer-address | name ] Displays detailed information about an MSDP peer.
show ip msdp sa-cache [ group-address |
source-address | group-name | source-name ]
[ autonomous-system-number ]
Displays (S,G) state learned from MSDP peers.
show ip msdp summary Displays MSDP peer status and SA message counts.
Table 45-59
Command Purpose
clear ip msdp peer peer-address |
name
Clears the TCP connection to the specified MSDP peer,
resetting all MSDP message counters.
clear ip msdp statistics [ peer-address
| name ]
Clears statistics counters for one or all the MSDP peers
without resetting the sessions.
clear ip msdp sa-cache
[ group-address | name ]
Clears the SA cache entries for all entries, all sources for a
specific group, or all entries for a specific source/group pair.