From: Hunt Lee (huntl@webcentral.com.au)
Date: Thu Feb 27 2003 - 04:20:14 GMT-3
Hi Group,
Does anyone know when one should use "ip split-horizon" for EIGRP?
RTD
/
RTA---- RTB
\
RTC
RTA, RTB & RTD are using OSPF, while RTA & RTC are both using EIGRP...
RTA & RTC are point-to-point, while..
RTA, RTB & RTD are point-to-multipoint
On the solutions, I was told that I need to use "ip split-horizon" on RTC
outgoing interface (to RTA), why??? I thought we only need to use this
command on the hub if it is point-to-multipoint sub-interface...
anyway, here's the config:-
On RTC:-
interface Serial0
ip address 137.20.200.18 255.255.255.240
ip nat outside
encapsulation frame-relay
ip split-horizon <------ Do we need this???
no ip mroute-cache
keepalive 15
no fair-queue
frame-relay lmi-type ansi
router eigrp 10
network 137.20.0.0
no auto-summary
And on RTA:-
interface Serial0.1 multipoint
ip address 137.20.100.34 255.255.255.224
ip ospf network point-to-multipoint
frame-relay de-group 1 502
frame-relay map ip 137.20.100.33 502 broadcast
frame-relay map ip 137.20.100.35 503 broadcast
!
interface Serial0.2 point-to-point
bandwidth 2000
ip address 137.20.200.17 255.255.255.240
frame-relay interface-dlci 504
router eigrp 10
redistribute ospf 10 metric 2000 100 255 1 1500
passive-interface BRI0
passive-interface Ethernet0
passive-interface Serial0.1
passive-interface Serial1
network 137.20.0.0
no auto-summary
no eigrp log-neighbor-changes
Any help / ideas would be greatly appreciated.
Regards,
Hunt
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