Dell S4048-ON, Configuration Manual

Page: 534 / 1039

Example of Verifying the System is not Advertising Local Sources
In the following example, R1 stops advertising source 10.11.4.2. Because it is already in the SA cache of R3, the entry remains there
until it expires.
[Router 1]
R1(conf)#do show run msdp
!
ip multicast-msdp
ip msdp peer 192.168.0.3 connect-source Loopback 0
ip msdp sa-filter out 192.168.0.3 list mylocalfilter
R1(conf)#do show run acl
!
ip access-list extended mylocalfilter
seq 5 deny ip host 239.0.0.1 host 10.11.4.2
seq 10 deny ip any any
R1(conf)#do show ip msdp sa-cache
MSDP Source-Active Cache - 1 entries
GroupAddr SourceAddr RPAddr LearnedFrom Expire UpTime
239.0.0.1 10.11.4.2 192.168.0.1 local 70 00:27:20
R3(conf)#do show ip msdp sa-cache
MSDP Source-Active Cache - 1 entries
GroupAddr SourceAddr RPAddr LearnedFrom Expire UpTime
239.0.0.1 10.11.4.2 192.168.0.1 192.168.0.1 1 00:10:29
[Router 3]
R3(conf)#do show ip msdp sa-cache
R3(conf)#
To display the configured SA filters for a peer, use the
show ip msdp peer
command from EXEC Privilege mode.
Logging Changes in Peership States
To log changes in peership states, use the following command.
• Log peership state changes.
CONFIGURATION mode
ip msdp log-adjacency-changes
Terminating a Peership
MSDP uses TCP as its transport protocol. In a peering relationship, the peer with the lower IP address initiates the TCP session,
while the peer with the higher IP address listens on port 639.
• Terminate the TCP connection with a peer.
CONFIGURATION mode
ip msdp shutdown
Example of the Verifying that Peering State is Disabled
After the relationship is terminated, the peering state of the terminator is SHUTDOWN, while the peering state of the peer is
INACTIVE.
[Router 3]
R3(conf)#ip msdp shutdown 192.168.0.1
R3(conf)#do show ip msdp peer
Peer Addr: 192.168.0.1
Local Addr: 0.0.0.0(0) Connect Source: Lo 0
State: Shutdown Up/Down Time: 00:00:18
Timers: KeepAlive 30 sec, Hold time 75 sec
SourceActive packet count (in/out): 0/0
SAs learned from this peer: 0
SA Filtering:
534
Multicast Source Discovery Protocol (MSDP)