3com 3031 Instruccion De Instalación
MSDP Configuration
635
according to the configured prefix list. If multiple static RPF peers using the
same
same
rp-policy
parameter are configured, any peer that receives an SA
message will forward it to the other peers.
■
Not using the
rp-policy
parameter universally: According to the
configuration sequence, only the first static RPF peer whose connection state
UP is activated. All SA messages from the peer will be received and those from
other static RPF peers will be discarded. Once the activated static RPF peer
turns invalid (possibly from the removal of a configuration or connection
interrupted), the following first static RPF peer with UP connection state
according to the configuration sequence will assume its role.
UP is activated. All SA messages from the peer will be received and those from
other static RPF peers will be discarded. Once the activated static RPF peer
turns invalid (possibly from the removal of a configuration or connection
interrupted), the following first static RPF peer with UP connection state
according to the configuration sequence will assume its role.
Configuring Originating
RP
During the creation of SA message, an MSDP peer can be configured to use the IP
address of a specified interface as the RP address in its SA message.
address of a specified interface as the RP address in its SA message.
Perform the following configuration in MSDP view.
By default, the RP address in SA message is the one configured by PIM.
Caching SA
When SA messages are cached on a router, the new join-in groups can directly
access all the active sources and join the corresponding source tree, instead of
waiting for the arrival of the next SA message.
access all the active sources and join the corresponding source tree, instead of
waiting for the arrival of the next SA message.
Perform the following configuration in MSDP view.
By default, the router caches the SA state, or rather the (S, G) entry when receiving
an SA message.
an SA message.
Some memory is consumed as the join delay of groups is shortened by this
configuration.
configuration.
Configuring the
Maximum Number of
SAs Cached
To prevent DoS (Deny of Service) attacks, you can set the maximum number of SAs
cached on the router.
cached on the router.
Perform the following configuration in MSDP view.
Table 731 Configuring Originating RP
Operation
Command
Configure an MSDP peer to use the
IP address of a specified interface as
the RP address of its SA message
IP address of a specified interface as
the RP address of its SA message
originating-rp interface-type
interface-number
Remove the above operation
undo orginating-rp
Table 732 Caching SA
Operation
Command
Ccache SA
cache-sa-enable
Disable SA caching
undo cache-sa-enable
Table 733 Configuring the maximum number of SAs cached
Operation
Command
Configure the maximum number of
SAs cached
SAs cached
peer peer-address sa-cache-maximum
sa-limit
Restore the default configuration
undo peer peer-address sa-cache-maximum