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Description Use the rip split-horizon command to enable the split horizon function.
Use the undo rip split-horizon command to disable the split horizon function.
By default, the split horizon function is enabled.
Note that:
■ The split horizon function is necessary for preventing routing loops. Therefore,
you are not recommended to disable it.
■ In special cases, make sure that it is necessary to disable the split horizon
function before doing so.
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■ If both the poison reverse and split horizon functions are enabled, only the
poison reverse function takes effect.
■ On Frame Relay, X.25 and other non-broadcast multi-access (NBMA) links, split
horizon should be disabled if multiple VCs are configured on the primary
interface and secondary interfaces to ensure route advertisement. For detailed
information, refer to “Frame Relay Configuration Commands” on page 371
and “LAPB and X.25 Configuration Commands” on page 421.
Examples # Enable the split horizon function on Ethernet1/0.
<Sysname> system-view
[Sysname] interface ethernet 1/0
[Sysname-Ethernet1/0] ripng split-horizon
ripng summary-address
Syntax ripng summary-address ipv6-address prefix-length
undo ripng summary-address ipv6-address prefix-length
View Interface view
Parameters ipv6-address: Destination IPv6 address of the summary route.
prefix-length: Prefix length of the destination IPv6 address of the summary route,
in the range of 0 to 128. It indicates the number of consecutive 1s of the prefix,
which defines the network ID.
Description Use the
ripng summary-address command to configure a summary advertised
through the interface.
Use the
undo ripng summary-address command to remove the summary.
If the prefix and the prefix length of a route match the IPv6 prefix, the IPv6 prefix
will be advertised instead. Thus, one route can be advertised on behalf of many
routes. After summarization, the summary route cost is the lowest cost among
summarized routes.