Newbie question

[manishgp]

What does this line means in ip section of cisco 3600 configuration.

ip route <nn.nn.nn.nn> <255.255.255.0> Null0 254
and
no ip http server

Thanks

 

[rburke]

The command &quot;ip route <nn.nn.nn.nn> <255.255.255.0> Null0 254&quot; means that you have a floating Null route that if there is NO other route to the subnet nn.nn.nn.nn/24 then it will just throw anything destined to those addresses away. (Null0 is a logical interface that anything that goes there is thrown away.) The command &quot;no ip http server&quot; turns off the internal web server in the IOS. (This is usually a good thing to do, do to security issues.)

Let me know if you need anymore info.

Burke

 

[manishgp]

Thanks Burke,
This certainly helped.
Manish

 

[manishgp]

what does 254 at the end of line means.

Thanks

 

[spudnuts]

254 is the administrative distance or it could be a tag for controlling redistribution via route maps. Look here:

http://www.cisco.com/en/US/products...eference_chapter09186a00800ca69c.html#1018065

SpudNuts(ITC), USN(Ret), CCNA, CST

 

[FANCYpete]

Hi manishgp, spudnuts is 50% correct, 254 is the administrative distance on your route that you have pasted in your original entry :

&quot;ip route <nn.nn.nn.nn> <255.255.255.0> Null0 254&quot;

HOWEVER, It could not be a tag for controlling redistribution via route maps without the required paramater &quot;tag&quot; being entered. The finished command for your original route, along with the addition of a tag of 254 if you wanted to do this would look like this:

&quot;ip route <nn.nn.nn.nn> <255.255.255.0> Null0 tag 254 254&quot;


For your reference:

0055-WRTR-05(config)#ip route 192.168.0.0 255.255.255.0 Null0
0055-WRTR-05(config)#ip route 192.168.0.0 255.255.255.0 Null0 ?
<1-255> Distance metric for this route
A.B.C.D Forwarding router's address
name Specify name of the next hop
permanent permanent route
tag Set tag for this route
<cr>

0055-WRTR-05(config)#ip route 192.168.0.0 255.255.255.0 Null0 tag 254 ?
<1-255> Distance metric for this route
name Specify name of the next hop
permanent permanent route
<cr>

0055-WRTR-05(config)#ip route 192.168.0.0 255.255.255.0 Null0 tag 254 254


I'm the Fanciest of the Fancy...INDEED

 

[manishgp]

Thanks FancyPete and SpudNuts, This helped me.
Manish