From: CCIEin2006 (ciscocciein2006@gmail.com)
Date: Wed Jun 28 2006 - 10:38:03 ART
Hey guys,
I was wondering if anyone could confirm my understanding of link state
routing. In the following scenario:
RTRA----RTRB----RTRC----RTRD----10.1.1.0
For RTRA to enter 10.1.1.0 in its routing table it does the following:
1. Looks in its link state database for 10.1.1.0.
2. Finds 10.1.1.0 is connected to RTRD.
3. Does a recursive lookup to find where RTRD is connected.
4. Finds RTRD is connected to RTRC.
5. Does a recursive lookup to find where RTRC is connected.
6. Finds RTRC is connected to RTRB.
7. Does a recursive lookup to find where RTRB is connected.
8. Finds RTRB is directly connected to Ethernet0.
9. Adds 10.1.1.0 with next hop to RTRB out Ethernet0.
If using a distance vector proctocol on the other hand:
1. RTRA learns 10.1.1.0 from RTRB. It doesn't care about anything beyond
RTRB.
2. Finds RTRB is directly connected to Ethernet0.
3. Adds 10.1.1.0 with next hop to RTRB out Ethernet0.
Is my thinking correct here?
Thanks in advance.
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