Purpose
Command or Action
(Optional) Limits which multicast data is sent in SA messages to an
MSDP peer.
ttl-threshold ttl-value
Example:
RP/0/RP0/CPU0:router(config-msdp)#
Step 5
•
Only multicast packets with an IP header TTL greater than or equal
to the
ttl-value
argument are sent to the MSDP peer specified by
the IP address or name.
ttl-threshold 8
•
Use this command if you want to use TTL to examine your
multicast data traffic. For example, you could limit internal traffic
to a TTL of 8. If you want other groups to go to external locations,
send those packets with a TTL greater than 8.
•
This example configures a TTL threshold of eight hops.
Exits the current configuration mode.
exit
Example:
RP/0/RP0/CPU0:router(config-msdp)# exit
Step 6
Defines an IPv4 access list to be used by SA filtering.
ipv4 access-list name
[
sequence-number
]
permit source
[
source-wildcard
]
Step 7
•
In this example, the access list 100 permits multicast group
239.1.1.1.
Example:
RP/0/RP0/CPU0:router(config)# ipv4
•
The
ipv4 access-list
command is required if the keyword
list
is
configured for SA filtering in
Step 3, on page 125
.
access-list 100 20 permit 239.1.1.1
0.0.0.0
commit
Step 8
Configuring MSDP MD5 Password Authentication
SUMMARY STEPS
1.
configure
2.
router msdp
3.
peer peer-address
4.
password
{
clear
|
encrypted
}
password
5.
commit
6.
show mfib
[
vrf vrf-name
] [
ipv4
|
ipv6
]
hardware route
{
*
|
source-address
|
group-address
[/
prefix-length
]}
location node-id
Cisco IOS XR Multicast Configuration Guide for the Cisco CRS Router, Release 5.2.x
126
Implementing Multicast Routing on Cisco IOS XR Software
Configuring MSDP MD5 Password Authentication