Distance Command on CISCO Router/Switch

Command

Distance

Use

Modifies the administrative distance for RIP routes.

Syntax

Router(config-router)#distance <1-255> 
OR
Router(config-router)#distance <1-255> <source IP> <wildcard 
bits> <list>

Options

<source IP> The IP from which the routes are comming from
<wildcard bits> The wildcard mask
<list> Access list

Example

First, the administrative distance for all rip routes is changed by issuing the command distance 100.

R1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
R1(config)#router rip
R1(config-router)#distance 100

The rip route tables are displayed, showing the newly changed adminstrative distance.

R1(config-router)#do show ip route rip
2.0.0.0/32 is subnetted, 1 subnets
R 2.2.2.2 [100/1] via 10.1.1.2, 00:00:25, FastEthernet0/0
10.0.0.0/24 is subnetted, 2 subnets
R 10.2.2.0 [100/1] via 10.1.1.2, 00:00:25, FastEthernet0/0

Next, we’ll be changing the administrative distance of 1.1.1.1 to 80. To do this, an access list must be created first.

R2(config-router)#access-list 66 permit 1.1.1.1
R2(config-router)#distance 80 10.1.1.1 0.0.0.0 66

Here’s the rip route displaying the changed administrative distance of 1.1.1.1.

R2(config-router)#do show ip route rip
1.0.0.0/32 is subnetted, 3 subnets
R 1.1.1.1 [80/1] via 10.1.1.1, 00:00:19, FastEthernet0/0
R 1.3.3.3 [100/1] via 10.1.1.1, 00:00:19, FastEthernet0/0
R 1.2.2.2 [100/1] via 10.1.1.1, 00:00:19, FastEthernet0/0

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