The ripng summary-address command enables a RIPng Router to advertise the summarized IPv6 addresses on an interface and specifies the IPv6 prefix for the summarized routes.
The undo ripng summary-address command disables a RIPng Router from advertising summarized IPv6 addresses.
By default, this function is disabled.
| Parameter | Description | Value |
|---|---|---|
| ipv6-address |
Specifies the summarized IPv6 network address. |
The address is a 32-digit hexadecimal number, in the format of X:X:X:X:X:X:X:X. |
| prefix-length |
Specifies the length of the IPv6 prefix (the number of consecutive bits in the IPv6 prefix). |
The value is an integer ranging from 0 to 128. |
| avoid-feedback |
Prevents the routes summarized on an interface from being learned by the interface. |
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100GE interface view, 10GE interface view, 25GE sub-interface view, 25GE interface view, 400GE interface view, 40GE interface view, 50GE sub-interface view, 50GE interface view, Eth-Trunk interface view, FlexE interface view, GE optical interface view, GE electrical interface view, GMPLS-UNI interface view, Global VE sub-interface view, Tunnel interface view, VE sub-interface view, VLANIF interface view
Usage Scenario
The RIPng routing table on a medium or large RIPng network contains a large number of routes. Storing the routes consumes a large number of memory resources, and transmitting and processing these routes consume lots of network resources. To address this issue, run the ripng summary-address command to configure RIPng route summarization.
Routes with the same IPv4 prefix can be summarized into one route. The system then advertises the summary route to other network segments. Route summarization reduces the number of routes in the routing table and minimizes system resource consumption. In addition, if a specific link frequently alternates between Up and Down, the links not involved in the route summarization will not be affected, which prevents route flapping and improves network stability.Prerequisites
RIPng has been enabled on the interface using the ripng enable command.
Configuration Impact
The cost of the summary route is the smallest cost of the specific routes that participate in the summarization.
<HUAWEI> system-view [~HUAWEI] interface GigabitEthernet0/1/0 [~HUAWEI-GigabitEthernet0/1/0] ipv6 enable [*HUAWEI-GigabitEthernet0/1/0] ripng 100 enable [*HUAWEI-GigabitEthernet0/1/0] ripng summary-address 2001:db8:: 35