HP ProCurve 6108, Management And Configuration Manual

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IP Routing Features
Configuring Static IP Routes
Static IP Route Parameters
When you configure a static IP route, you must specify the following param­
eters:
■
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 HP ProCurve routing switch applies fixed default values for the following
routing parameters:
■
The route’s metric – The value the routing switch uses when comparing
this route to other routes in the IP route table to the same destination. The
metric applies only to routes that the routing switch has already placed
in the IP route table. The default metric for static IP routes is 1.
■ The route’s administrative distance – The value that the routing switch
uses to compare this route with routes from other route sources to the
same destination before placing a route in the IP route table. This param­
eter does not apply to routes that are already in the IP route table. The
default administrative distance for static IP routes is 1.
The default 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 VLAN (Interface) States
IP static routes remain in the IP route table only so long as the VLAN interface
used by the route is available. If the VLAN becomes unavailable, the software
removes the static route from the IP route table. If the VLAN 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.
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