Help! With these phrases!

[Microbyte]

i took the exam today, and regretfully failed with the score of 744 in BSCI.
however, i may have some misunderstanding with some of question's phrases. so i am here today to ask you what are they really mean.

1. "seed cost"
does that carry the same meaning as the word "metric value" ?

2. "flagging the default route"
does that carry the same meaning as deleting the default route?

there are some other phrases i got confused over but for the time being i only remember these two.
thanks in advance!

 

[Jsteve]

The seed cost or seed metric is the initial cost of a metric of a route that is advertised by a router that is directly connected. So lets say you have three routers connected,

-----A-----B-----C-----
n1 n2 n3 n4

Router A would advertise network n1 as a seed cost of 10. when router C learns of n1 it will no longer have a seed cost of 10, it would be the acumilitive of the cost of n1+n2+n3.


Flagging a default network is using the "ip default-network x.x.x.x" command to propagate the default route command "1p route 0.0.0.0 0.0.0.0".

 

[Jsteve]

Also "flagging a route" is when a link goes down and the distant vector protocol flags the route as down in its routing update.

 

[Microbyte]

thanks Jsteve!