3Com S7906E - Switch, Руководство по настройке

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1-8
Configuring Split Horizon and Poison Reverse
If both split horizon and poison reverse are configured, only the poison reverse function takes effect.
Configure split horizon
The split horizon function disables a route learned from an interface from being advertised through the
same interface to prevent routing loops between neighbors.
Follow these steps to configure split horizon:
To do… Use the command… Remarks
Enter system view system-view ––
Enter interface view
interface interface-type
interface-number
––
Enable the split horizon
function
ripng split-horizon
Optional
Enabled by default
Generally, you are recommended to enable 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. That is to say, the route is 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. These fields 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 will be