From: Aaron DuShey (aaron.dushey@xxxxxxxxxxxxxxxxxxxxx)
Date: Thu Sep 07 2000 - 12:19:32 GMT-3
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121cgcr/dial
ts_c/dtsprt6/dcdbakdw.htm
The following prerequisites apply to Dialer Watch:
The router is configured with a dynamic routing protocol such as Interior
Gateway Routing Protocol (IGRP) or Enhanced IGRP is configured. Only
Enhanced IGRP and IGRP are currently supported.
Simon, do you have some other place where it states OSPF is supported? I
went to 12.1 and this is what I found?
Aaron DuShey
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Simon Baxter
Sent: Wednesday, September 06, 2000 8:08 PM
To: Hazel Gachoka; Maljure, Sanjay; 'Kenneth Kriel'; 'Ccielab; Kent
Subject: RE: Interesting ISDN problem
Wrong :
Dialer Watch provides the following advantages:
Routing protocol independent--Static routes or dynamic routing protocols,
such as Interior Gateway Routing Protocol (IGRP), Enhanced IGRP (EIGRP) or
Open Shortest Path First (OSPF) can be used.
>From ver 12.1
Simon
-----Original Message-----
From: Hazel Gachoka [mailto:hgachoka@cisco.com]
Sent: Thursday, September 07, 2000 1:08 PM
To: Simon Baxter; Maljure, Sanjay; 'Kenneth Kriel'; 'Ccielab; Kent
Subject: RE: Interesting ISDN problem
Dialer watch is NOT for OSPF, it requires IGRP or EIGRP and it is only for
IP.
Hazel
At 12:54 PM 9/7/00 +1100, Simon Baxter wrote:
>
>Can't you use dialer-watch lists?
>
>Configure them to initiate the ISDN when the OSPF (etc) routes disappear...
>You'd need reasonably recent software.
>
>
>Simon
>
>-----Original Message-----
>From: Maljure, Sanjay [mailto:smaljure@cibernetworks.com]
>Sent: Thursday, September 07, 2000 11:50 AM
>To: 'Kenneth Kriel'; 'Ccielab; Kent
>Subject: RE: Interesting ISDN problem
>
>
>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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