Extreme Networks ExtremeWare XOS 11.3, Manual

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IPv4 Unicast Routing
ExtremeWare XOS 11.3 Concepts Guide
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Dynamic routes
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Directly attached network interfaces that are not active.
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 65 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:
configure iproute {ipv4} priority [rip | blackhole | bootp | ebgp | ibgp | icmp |
static | ospf-intra | ospf-inter | ospf-as-external | ospf-extern1 | ospf-extern2]
<priority>
Table 65: Relative route priorities
Route Origin Priority
Direct 10
BlackHole 50
Static 1100
ICMP 1200
EBGP 1700
IBGP 1900
OSPFIntra 2200
OSPFInter 2300
RIP 2400
OSPFExtern1 3200
OSPFExtern2 3300
BOOTP 5000