IPv4 Routing | 263
• When an interface comes up, FTOS re-installs the route.
• When a recursive resolution is “broken,” FTOS withdraws the route.
• When a recursive resolution is satisfied, FTOS re-installs the route.
Configure Static Routes for the Management Interface
When an IP address used by a protocol and a static management route exists for the same prefix, the
protocol route takes precedence over the static management route.
To configure a static route for the management port, use the following command in CONFIGURATION
mode:
To view the configured static routes for the management port, use the
show ip management-route command
in EXEC privilege mode (Figure 14-4).
Figure 14-4. show ip management-route Command Example
Directed Broadcast
By default, FTOS drops directed broadcast packets destined for an interface. This default setting provides
some protection against denial of service (DOS) attacks.
To enable FTOS to receive directed broadcasts, use the following command in INTERFACE mode:
To view the configuration, use the
show config command in INTERFACE mode.
Command Syntax Command Mode Purpose
management route ip-address mask
{forwarding-router-address |
ManagementEthernet slot/port}
CONFIGURATION Assign a static route to point to the management
interface or forwarding router.
Command Syntax Command Mode Purpose
ip directed-broadcast
INTERFACE Enable directed broadcast.
FTOS#show ip management-route all
Destination Gateway State
----------- ------- -----
1.1.1.0/24 172.31.1.250 Active
172.16.1.0/24 172.31.1.250 Active
172.31.1.0/24 ManagementEthernet 1/0 Connected
FTOS#
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