RE: EIGRP & Spilt horizon

From: Desimone, Aurelio (ADesimone@refco.com)
Date: Sat Jan 04 2003 - 15:57:46 GMT-3


Because these are two different things; 'ip split-horizon' only applies to
distance-vector protocols other than eigrp; i.e. 'ip split-horizon eigrp
100' is specifically for eigrp and I believe it is enabled by default on all
interfaces; that's why you aren't seeing it in the config and the 'sh ip
int' is deceiving you.

Aurelio
10267

-----Original Message-----
From: Cameron, John [mailto:johcamer@cisco.com]
Sent: Saturday, January 04, 2003 12:25 PM
To: 'ccielab@groupstudy.com'
Subject: EIGRP & Spilt horizon

I have two routers R1 and R2 both running eigrp 100. R1 is a p2p
FR subinterface and R2 is a FR physical interface.

When I issue "show ip int s0/0" on R2 I see that split horizon is disable
as
you would expect, but when I use the command:

"ip split-horizon eigrp 100"

there is no change in the configuration:

interface Serial0/0
 ip address 10.20.1.2 255.255.0.0
 encapsulation frame-relay
 frame-relay map ip 10.20.1.1 201 broadcast
 no frame-relay inverse-arp
 frame-relay lmi-type cisco

when I issue the command "ip split-horizon" this command works

interface Serial0/0
 ip address 10.20.1.2 255.255.0.0
 encapsulation frame-relay
 ip split-horizon
 frame-relay map ip 10.20.1.1 201 broadcast
 no frame-relay inverse-arp
 frame-relay lmi-type cisco

why isn't the "ip split-horizon eigrp 100" showing up? what am I missing?

Thanks,
JDC
.
.



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