Friday, March 5, 2010

What is Administrative Distance?

The Administrative Distance(AD) is the Numerical value that ranges between 0 -255. AD shows the Trust-worthiness of the Protocol.

If AD is high, Trust-worthiness is Less.
If AD is Less, Trust-worthiness is High.

Example and explaination:
You are advertising the same network using RIP and EIGRP Protocol, but the router will take the routes advertised by EIGRP. Why because the AD of EIGRP is 90 and the AD of RIP is 120, the router will prefer the route with low AD(high trust-worthiness) only. thus it takes EIGRP routes.

No comments:

Post a Comment