From: shiran guez (shiranp3@gmail.com)
Date: Thu Nov 08 2007 - 05:46:44 ART
OSPF is a link state Protocol meaning that all the routers share the same DB
no split horizon is used with OSPF.
you cannot prevent a router to send or accept updates in OSPF, what you can
do is locally on the router of your choice filter routes from being inserted
to the Routing Table using Distribute list in.
Read RFC 2328.
ip split horizon command under the interface actually is referring to RIP
and not to OSPF.
for EIGRP there is ip split horizon eigrp <AS>
On Nov 8, 2007 10:30 AM, Ahsan Mohiuddin <ahsan.mohiuddin@yahoo.com> wrote:
> hello group,
>
> i have routers R1, R3 (FR spokes) connected to Hub R5. R1 is advertising
> route 155.2.146.0 to R5, but I do not want R5 to send this update to R3.
> So, I have configured "ip split-horion" under R5's physical interface
> (subinterfaces not used). But it seems R3 is still learning the route from
> R1:
>
> O 155.2.146.0 [110/65] via 155.2.13.1, 00:10:27, Serial1/0
> [110/65] via 155.2.0.1, 00:10:27, Serial1/1
>
>
> Config of R5
>
> interface Serial1/0
> ip address 155.2.0.5 255.255.255.0
> encapsulation frame-relay
> ip split-horizon
> ip ospf priority 2
> frame-relay map ip 155.2.0.1 501
> frame-relay map ip 155.2.0.3 503
> frame-relay map ip 155.2.0.4 504
> end
>
> Config of R3
>
> interface Serial1/1
> ip address 155.2.0.3 255.255.255.0
> encapsulation frame-relay
> ip ospf priority 0
> serial restart-delay 0
> no dce-terminal-timing-enable
> frame-relay map ip 155.2.0.5 305
> end
>
> Config of R1
>
> interface Serial1/0
> ip address 155.2.0.1 255.255.255.0
> encapsulation frame-relay
> ip ospf priority 0
> serial restart-delay 0
> no dce-terminal-timing-enable
> frame-relay map ip 155.2.0.5 105
> end
>
>
> Any idea what i am doing wrong here?
>
> Thanks in adv
> -Ahsan
>
> __________________________________________________
> Do You Yahoo!?
> Tired of spam? Yahoo! Mail has the best spam protection around
> http://mail.yahoo.com
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
>
-- Shiran Guez MCSE CCNP NCE1 http://cciep3.blogspot.com http://www.linkedin.com/in/cciep3
This archive was generated by hypermail 2.1.4 : Sat Dec 01 2007 - 06:37:28 ART