From: John Elias (jelias_@xxxxxxxxxxx)
Date: Mon Nov 05 2001 - 11:37:22 GMT-3
If you are using the serail's main interface, then you need to put the 'ip
split-horizion' command on the spoke routers, (Main interfaces are
multipoint by default). On main interfaces, split horizion is turned off by
default for frame relay. On the hub's main interface you do not need to put
the command because you want it to be turned off at the hub router.
John E.
CCIE #8150
>From: Brad Caplan <bradcaplan@yahoo.com>
>Reply-To: Brad Caplan <bradcaplan@yahoo.com>
>To: "Chua, Parry" <Parry.Chua@compaq.com>, ccielab@groupstudy.com
>Subject: RE: Basic Frame Relay, RIP, and Split Horizon Question
>Date: Sun, 4 Nov 2001 22:45:26 -0800 (PST)
>
>There is connectivity to all serial interfaces. R1 can
>ping all spokes and vice versa. Unfortunately, I can't
>seem to get RIP to advertise the ethernet interface
>network addresses. All spokes can ping the ethernet
>interface of R1, but not the ehternet interfaces of
>the other spokes.
>
>It seems like the problem is a split horizon issue
>whereby R1 is not forwarding the spoke ethernet
>network addresses. I can get it to work if I use sub
>interfaces (point-to-point) but am wondering if there
>is any other way.
>
>Brad
>
>
>
>--- "Chua, Parry" <Parry.Chua@compaq.com> wrote:
> > Hi,
> >
> > You need to verify the datalink(layer2) reachability
> > first using network
> > layer address to verify. From your topology, it is
> > assume that R1 is the
> > hub, R2 to R6 are spokes. It is assume that R1 has 5
> > dlci to reach R2 to R6.
> > It is assume that R2 to R6 each has one dlci and can
> > only reach R1. The
> > first step you need to do is to ensure that R1(hub)
> > can ping (spokes)R2 to
> > R6 and vice versa. Next you need to verify R2 to R6
> > (spoke to spoke). Afther
> > this is done.
> > Next it what routing protocols to run in this cloud,
> > each has problem to
> > resolve.
> >
> >
> >
> > > Parry Chua
> > >
> >
> >
> > -----Original Message-----
> > From: Brad Caplan [mailto:bradcaplan@yahoo.com]
> > Sent: Monday, November 05, 2001 9:57 AM
> > To: ccielab@groupstudy.com
> > Subject: Basic Frame Relay, RIP, and Split Horizon
> > Question
> >
> >
> > I have a Hub and Spoke configuration setup as
> > follows:
> >
> > R1------FR-------R2
> > |
> > --------R3
> > |
> > --------R5
> > |
> > --------R6
> >
> > All of the router's serial connections are in the
> > 10.1.1.x/24 network. Each router's ethernet
> > connection
> > is in a different class A network. Each router is
> > running RIP.
> >
> > I can only ping the LAN interfaces of all
> > routers if I use point-to-point subinterfaces on the
> > spoke routers.
> >
> > Is it possible to achieve this same connectivity
> > without using sub-interfaces? I tried using the 'no
> > ip
> > split-horizon' command on the serial interface of
> > the
> > hub router, (R1) but that does not seem to help.
> >
> > Thanks,
> > Brad
> >
> >
> >
This archive was generated by hypermail 2.1.4 : Fri Jun 21 2002 - 06:45:03 GMT-3