Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

EIGRP - feasable sucessor route same AD as FD ?

Do feasable sucessor routes have to have a lower advertised distance than the sucessor routes feasable distance or can it be the same ?

Router# show ip eigrp topology

IP-EIGRP Topology Table for process 77

Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,

r - Reply status

P 172.16.90.0 255.255.255.0, 2 successors, FD is 0

via 172.16.80.28 (46251776/46226176), Ethernet0

via 172.16.81.28 (46251776/46226176), Ethernet1

via 172.16.80.31 (46277376/46251776), Serial0

P 172.16.81.0 255.255.255.0, 1 successors, FD is 307200

via Connected, Ethernet1

via 172.16.81.28 (307200/281600), Ethernet1

via 172.16.80.28 (307200/281600), Ethernet0

via 172.16.80.31 (332800/307200), Serial0

If so would the following routes ever become sucessors ?

For 172.16.90.0 255.255.255.0

via 172.16.80.31 (46277376/46251776), Serial0

For 172.16.81.0 255.255.255.0

via 172.16.80.31 (332800/307200), Serial0

Thanks

D

3 REPLIES

Re: EIGRP - feasable sucessor route same AD as FD ?

Hi,

it has to be lower. If it is equal, then the router is no FS.

You did not obtain a digital copy of the ICND materials, did you?

Regards, Martin

New Member

Re: EIGRP - feasable sucessor route same AD as FD ?

Thanks Martin, I do have the ICND materials from when I did the CCNA, I got the Ciscopress book with the CD. Actually for this example I cut and pasted from the Cisco docs on show ip eigrp topo.

I'm trying to pass the BSCI at the moment and wanted to clarify that EIGRP issue.

Having some problems with the wording of the BSCI. Sometimes can't tell exactly what they're asking...

Anyway going to try again tommorow.

Thanks

Re: EIGRP - feasable sucessor route same AD as FD ?

Good luck with the BSCI!

Just one note: the BSCI has been updated and a new exam is out reflecting the new content. Make sure you take the exam matching your study material.

BSCI:

http://www.cisco.com/web/learning/le3/le2/le37/le10/learning_certification_type_home.html

Regards, Martin

220
Views
0
Helpful
3
Replies