Configuring the poison reverse function, Configuring zero field check on ripng packets – H3C Technologies H3C S10500 Series Switches User Manual

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NOTE:

H3C recommends enabling split horizon to prevent routing loops.

Configuring the poison reverse function

The poison reverse function enables a route learned from an interface to be advertised through the

interface. However, the metric of the route is set to 16 (unreachable).
Follow these steps to configure poison reverse:

To do…

Use the command…

Remarks

Enter system view

system-view

––

Enter interface view

interface interface-type
interface-number

––

Enable the poison reverse function ripng poison-reverse

Required
Disabled by default

Configuring zero field check on RIPng packets

Some fields in the RIPng packet must be zero, which are called “zero fields”. With zero field check on

RIPng packets enabled, if such a field contains a non-zero value, the entire RIPng packet is discarded. If
you are sure that all packets are trustworthy, disable the zero field check to reduce the CPU processing

time.
Follow these steps to configure RIPng zero field check:

To do…

Use the command…

Remarks

Enter system view

system-view

––

Enter RIPng view

ripng [ process-id ]

––

Enable the zero field check

checkzero

Optional
Enabled by default

Configuring the maximum number of equal cost routes for load
balancing

Follow these steps to configure the maximum number of equal cost RIPng routes for load balancing:

To do…

Use the command…

Remarks

Enter system view

system-view

––

Enter RIPng view

ripng [ process-id ]

––

Configure the maximum number of
equal cost RIPng routes for load

balancing

maximum load-balancing number

Optional
8 by default

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