From: Bit Gossip (bit.gossip@chello.nl)
Date: Fri Mar 16 2007 - 13:02:19 ART
Hi Group,
I want to squeeze in one page all the most important factors to choose the
OSPF network type so that I can stuff it into my long term memory......
Any comment is welcome, especially on the compatibility between network types
Thanks,
Luca.
Network Type BROADCAST
Hello to 224.0.0.5
Hello 10, Dead 40
DR election: Yes
Compatible: NON_BROADCAST fixing timers
NextHop Change: no
Generate Host Route: no
Neighbor: not allowed
best suited for: LAN
Network Type NON_BROADCAST
Hello to unicast neighbor address
Hello 30, Dead 120
DR election: Yes
Compatible: BROADCAST fixing timers
NextHop Change: no
Generate Host Route: no
Neighbor: necessary
best suited for: NBMA fully meshed
Network Type POINT_TO_MULTIPOINT
Hello to 224.0.0.5 even if neighbor is configured
Hello 30, Dead 120
DR election: no
Compatible: p2mp non-broadcast, p2p
NextHop Change: Yes
Generate Host Route: Yes
Neighbor: not necessary but allowed to change the cost
best suited for: NBMA partially meshed, hub and spoke
Network Type POINT_TO_MULTIPOINT non-broadcast
Hello to unicast neighbor address
Hello 30, Dead 120
DR election: no
Compatible: p2mp, p2p
NextHop Change: Yes
Generate Host Route: Yes
Neighbor: necessary
best suited for: NBMA partially meshed, hub and spoke
Network Type POINT_TO_POINT
Hello to 224.0.0.5
Hello 10, Dead 40
DR election: no
Compatible: p2mp fixing timers
NextHop Change: n/a (only 2 router on the network)
Generate Host Route: no
Neighbor: not allowed
best suited for: ppp, hdlc, p2p fr sub-if
This archive was generated by hypermail 2.1.4 : Sun Apr 01 2007 - 06:35:51 ART