Configuring A Static Route - Cisco ASA 5505 Configuration Manual

Chapter 19 Configuring Static and Default Routes

Configuring a Static Route

Static routing algorithms are basically table mappings established by the network administrator before
the beginning of routing. These mappings do not change unless the network administrator alters them.
Algorithms that use static routes are simple to design and work well in environments where network
traffic is relatively predictable and where network design is relatively simple. Because of this fact, static
routing systems cannot react to network changes.
Static routes remain in the routing table even if the specified gateway becomes unavailable. If the
specified gateway becomes unavailable, you need to remove the static route from the routing table
manually. However, static routes are removed from the routing table if the specified interface goes down,
and are reinstated when the interface comes back up.
Note If you create a static route with an administrative distance greater than the administrative distance of the
routing protocol running on the adaptive security appliance, then a route to the specified destination
discovered by the routing protocol takes precedence over the static route. The static route is used only if
the dynamically discovered route is removed from the routing table.
To configure a static route, choose one of the following:
•
•
•
Add/Edit a Static Route
To add or edit a static route in ASDM, perform the following steps:
In the main ASDM window, choose Configuration > Device Setup > Routing > Static Routes.
Step 1
Choose which route to filter by clicking one of the radio buttons:
Step 2
•
•
•
OL-20339-01
Add/Edit a Static Route, page 19-3
Configuring Static Route Tracking, page 19-6
Deleting Static Routes, page 19-6
Both (filters both IPv4 and IPv6)
IPv4 only
IPv6 only
Configuring Static and Default Routes
Cisco ASA 5500 Series Configuration Guide using ASDM
19-3