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Overview of IPv6 Unicast Routing

ExtremeWare XOS 11.3 Concepts Guide

521

NOTE

If you define multiple default routes, the route that has the lowest metric is used. If multiple default routes have the

same lowest metric, the system picks one of the routes.

You can also configure blackhole routes—traffic to these destinations is silently dropped.

The criteria for choosing from multiple routes with the longest matching network mask is set by

choosing the relative route priorities.

Relative Route Priorities

Table 66 lists the relative priorities assigned to routes depending on the learned source of the route.

NOTE

Although these priorities can be changed, do not attempt any manipulation unless you are expertly familiar with the

possible consequences.

To change the relative route priority, use the following command:

ospfv3-inter | ospfv3-as-external | ospfv3-extern1 | ospfv3-extern2] <priority>

Table 66: Relative route priorities

Route Origin Priority

Direct 10

BlackHole 50

Static 1100

ICMP 1200

OSPF3Intra 2200

OSPF3Inter 2300

RIPng 2400

OSPFv3 ASExt 3100

OSPFv3 Extern1 3200

OSPFv3 Extern2 3300

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