Unlike RIP, split horizon is never automatically disabled in EIGRP. Consequently, if you have a hub-and-spoke frame setup with EIGRP overlayed, make sure you disable split horizon with the interface level command:
ccie(config-if)#no ip split-horizon eigrp 100
Monday, April 28, 2008
Sunday, April 13, 2008
RIP Triggered
- Only send information on link when there is a change in routing database
- Periodic updates are suppressed
- Command ('ip rip triggered') is required on both sides of the link
- Must be a point-to-point link
OSPF Demand Circuit
- No periodic heartbeat keepalives (hellos)
- 'Do not age' flag is set on all LSAs so the paranoid 30 min timer doesn't expire
- Updates will only be sent when there is a change in the OSPF topology
- Must be a point-to-point link for OSPF
- Command is only needed on one side
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