Product guide

IP Routing Features
Configuring Static IP Routes
Static IP Route Parameters
When you configure a static IP route, you must specify the following
parameters:
■ The IP address and network mask for the route’s destination network.
■ The route’s path, which can be one of the following:
• The IP address of a next-hop gateway
• A “null” interface. The routing switch drops traffic forwarded to the
null interface.
The routing switch also applies default values for the following routing
parameters:
■ The route’s metric: In the case of static routes, this is the value the
routing switch uses when comparing a static route to routes in the IP route
table from other sources to the same destination. The metric applies only
to routes that the routing switch has already placed in the IP route table.
The fixed metric for static IP routes is “1”.
■ The route’s administrative distance: In the case of static routes, this
is the value the routing switch uses to compare a static route to routes
from other route sources to the same destination before placing a route
in the IP route table. This does not apply to routes that are already in the
IP route table. The fixed administrative distance for static IP routes is “1”.
The fixed metric and administrative distance values ensure that the routing
switch always prefers static IP routes over routes from other sources to the
same destination.
Static Route States Follow Port States
IP static routes remain in the IP route table only so long as the next-hop
gateway, port, or virtual interface used by the route is available. If the gateway
or port becomes unavailable, the software removes the static route from the
IP route table. If the gateway or port later becomes available again, the
software adds the route back to the route table.
This feature allows the routing switch to adjust to changes in network
topology. The routing switch does not continue trying to use routes on
unavailable paths but instead uses routes only when their paths are available.
The following command configures a static route to 207.95.7.0, using
207.95.6.157 as the next-hop gateway.
ProCurve(config)# ip route 207.95.7.0/24 207.95.6.157
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