The
<vid>
command identifies the VLAN source of the IP address to advertise as the RP candidate address for
the router.
The command
group-prefix [
group-addr/mask
]
specifies the multicast group(s) to advertise as
supported by the RP candidate. Use this option when you want to enable the C-RP and simultaneously configure
it to support a subset of multicast addresses or ranges of addresses instead of all possible multicast addresses.
A group prefix can specify all multicast groups (224.0.0.0 to 239.255.255.255), a range (subset) of groups, or a
single group. A given address is defined by its nonzero octets and mask. The mask is applied from the high end
(leftmost) bits of the address and must extend to the last nonzero bit in the lowest-order, nonzero octet. Any
intervening zero or nonzero octet requires eight mask bits. Following are examples.
228.0.0.64/26:
Defines a multicast address range of 228.0.0.64 through 228.0.0.127. (The last six bits of the rightmost octet are
wildcards.)
228.0.0.64/30:
Defines a multicast address range of 228.0.0.64 through 228.0.0.67. (The last two bits of the rightmost octet are
wildcards.)
228.0.0.64/32:
Defines a single multicast address of 228.0.0.64. (There are no wildcards in this group prefix.)
228.0.0.64/25:
Creates an error condition caused by the mask failing to include the last (rightmost) nonzero bit in the lowest-
order, nonzero octet. (That is, this mask supports an address of 228.0.0.128, but not 228.0.0.64.)
NOTE:
The larger the mask, the smaller the range of multicast addresses supported. A mask of 32
bits always specifies a single multicast address. For example 230.0.15.240/32 defines a single
multicast address of 230.0.15.240.
Enabling or disabling C-RP operation
Use this command when the router is already configured with a source IP VLAN ID and you want to enable or
disable C-RP operation on the router.
Syntax:
[no] rp-candidate
Enables C-RP operation on the router. Requires that the source IP VLAN is currently configured, but disabled.
The
no
form of the command disables the currently configured C-RP operation, but does not change the
configured C-RP settings.
Adding or deleting a multicast group address
Use this command if you need to modify the multicast address group configuration for a C-RP on the router.
Syntax:
[no] rp-candidate group-prefix [group-addr | group-mask]
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Aruba 3810 / 5400R Multicast and Routing Guide for ArubaOS-
Switch 16.08
