Configuring the ECN330-switch
500 1553-KDU 137 365 Uen D 2006-06-16
• Only one RP can be used for each multicast group. However, multiple
RPs can be defined for different groups or group ranges using the mask.
If a group is matched by more than one group mask, the router will use
the RP with the longer prefix length mask. If an IP address previously
used for an RP is specified again, then the older entry is replaced.
• When multiple RPs are specified for the same group and mask length,
the router selects the RP with the highest priority (that is, lowest priority
value). If more than one RP ties for the highest priority, the RP-election
hash algorithm is used to select a candidate for that group. Ties
between RPs having the same hash value and priority are broken in
preference for the RP with the highest address.
• Static definitions for RP addresses may be used together with RP
addresses dynamically learned through the bootstrap router (BSR).
• If the "override" parameter is used, a statistically configured RP address
will take precedence over those learned through the BSR.
Command Attributes
• RP Address – Static IP address of the router that will be an RP for the
specified multicast group(s).
• Group – An IP multicast group address. If a group address is not
specified, the RP is used for all multicast groups.
• Address Mask – Subnet mask that is used for the group address.
• Override – If there is a conflict, the static RP configured with this
command prevails over a dynamically learned RP.
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