From: mani poopal (mani_ccie@yahoo.com)
Date: Sat May 21 2005 - 14:21:57 GMT-3
Hi San,
With respect to eigrp, even if the hub is either a physical interface(terminating multiple dlci's) or multipoint sub interface, you have to disable split horizon for eigrp by giving "no ip split horizon xxx". For RIP if it is physical interface split horizon is disabled(pls check, is from my memory) but RIP for multipoint subinterface you have to disable split horizaon by "no ip split horizon command". There is no special command in RIP like EIGRP.
PS:I alaways enable split horizon for frame serail physical interfaces if it runs either EIGRP or RIP. But for hub/spoke environment, you have to disable split horizon, if it is not already disabled. For link state routing protocols(OSPF, BGP etc), I will not worry about split horizon.
EIGRP:Is a form of link state routing protocol, ADVANCED DISTANCE VECTOR routing protocol.
HTH
Mani
san <san.study@gmail.com> wrote:
Scenario:
R4-------------R1----------------R5
All running eigrp AS 1024
All running on Main interface, one network, NBMA
question:
-----------
If i do sh ip inter s0/0 on R1, I see split horizon is
disabled....But why would i need to disable again with
"no ip split horizon eigrp 1024" on inter s0/0 on R1, so that R5 sees
R4's routes ?
Is it specific to eigrp ? or all distance vector IGPs ?
Thanks in Advance
/SAN
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