From: Maljure, Sanjay (smaljure@xxxxxxxxxxxxxxxxx)
Date: Wed Sep 06 2000 - 22:49:34 GMT-3
Hi
I just tried the tunnel option. It works beautifully. No routing protocols
or static routes involving the Bri's. I just created the tunnel interfaces
with the tunnel source and the tunnel destinations as the ip addresses
assigned to the Bri interfaces. Made the tunnel interfaces part of the OSPF
process. (BRI is not a part of the OSPF process)
"backup int bri 0" on the HDLC serial interfaces.
When the HDLC link goes down,
BRI comes up, hence tunnel comes up and routes are learnt through the tunnel
interface
If we configure "ospf demand-circuit" on the tunnel interface then the bri
won't stay up because of OSPF hellos. However the routes will.
Let me know if u need the configs. I was wondering if any of u guys got it
working with BVI's??
Sanjay
-----Original Message-----
From: Kenneth Kriel [mailto:ken@flane.com]
Sent: Wednesday, September 06, 2000 4:50 AM
To: 'Ccielab; Kent
Subject: RE: Interesting ISDN problem
I think that will work - I will try it, it seems like a really great idea !
Ken
-----Original Message-----
From: Kent [mailto:cciecn@yahoo.com]
Sent: Tuesday, September 05, 2000 2:55 PM
To: Kenneth Kriel; 'Ccielab
Subject: RE: Interesting ISDN problem
Kent,
Do you mean put the ip address of ISDN on a BVI and
put them in the bridge group, I think this should
work. how about tunnel? can you just tunnel the
routing across the ISDN and put the tunnel interface
into the ospf?
Thanks
Kent
--- Kenneth Kriel <ken@flane.com> wrote:
>
> Guys,
>
> No, the idea is to have no routing protocol
> configured on the ISDN link. No
> ospf/rip/igrp/eigrp.
>
> As Aaron, was saying, all the normal ISDN
> configuration options will not
> really work as you still need to have either some or
> other static route or
> routing protocol configured.
>
> I was wondering about configuring the ISDN as a
> bridged interface, or using
> IRB. When using bridging you could also use the
> backup interface I assume ?
> Has anyone tried this ?
>
> Ken
>
>
>
>
> -----Original Message-----
> From: nobody@groupstudy.com
> [mailto:nobody@groupstudy.com]On Behalf Of
> Graham Shaw
> Sent: Monday, September 04, 2000 2:24 PM
> To: 'Kenneth Kriel'; 'Ccielab
> Subject: RE: Interesting ISDN problem
>
>
> When you state no routing protocol on the WAN. Do
> you mean you do not want
> hellos keeping the ISDN link up?
> If this is the case ospf supports on-demand circuits
> (only configure on 1
> end).
>
> You have to have some kind of route to the
> destination. Be it static or
> dynamic! The router will buid a dynamic route on an
> unnumbered link but it
> will be host based so you cannot rely on this.
>
> Graham
>
> -----Original Message-----
> From: Kenneth Kriel [mailto:ken@flane.com]
> Sent: 04 September 2000 15:25
> To: 'Ccielab
> Subject: Interesting ISDN problem
>
>
>
> Gentleman,
>
> My network layout :
>
> ISDN
> ----------
> | |
> -e0--RA--HDLC--RB--e0
> OSPF OSFP
>
> When HDLC link fails - enable ISDN as backup, BUT
> ....
> No static routes and no routing protocol on ISDN
>
> Can this be done ? If so how ?
>
>
> I would like your input on this !
>
> Ken
>
>
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