DHCP to router interface

[Nader ibrahimi]

Hello to everyone 

I used the dynamic means dhcp method in order to assign ip address to the router interface whenever i used the show ip route command i encounter to a new option as above picture [254/0]  

My question is what is exactly the 254 means ?although i know the 0 means AD.

Require details information  

[paul driver · Accepted solution]

Hello

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@Nader ibrahimi wrote:

My question is what is exactly the 254 means ?although i know the 0 means AD.

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Thas the administrative distance (254) applied to a received default route from dhcp, hence usually its recommended to override that dynamic default route allocation with a static default route which will have an administrative distance of 1 by default

example:
ip route 0.0.0.0 0.0.0.0 eth0/1 10.1.1.1

[Blue_Bird]

Hello @Nader ibrahimi 

In a Cisco routing table, "[254/0]" represents a static route with an administrative distance of 254. This means the route is manually configured and has a lower priority than routes learned via dynamic routing protocols (which typically they have administrative distances less than 254)

Best regards
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