From: Chris (clarson52@comcast.net)
Date: Thu Oct 24 2002 - 01:16:15 GMT-3
hmm. Maybe. I guess if it could see itself as the DR, but i thought it needed one to even form the adjacency. Or that when negotiating one had to be picked. It would be pretty neat if it works as I have always been told and tried that it is not possible.
----- Original Message -----
From: Donny MATEO
To: aansar@sscomp.com.sg
Cc: ccielab@groupstudy.com ; Chris ; nobody@groupstudy.com
Sent: Thursday, October 24, 2002 12:13 AM
Subject: Re: Adv Router is not-reachable
on the condition two, I'm quite suprised that it works. But perhaps maybe because multipoint and
point to point is just the same thing. And on both there is no DR election perform, odd but make
sense.
tks for the tip.
Donny
aansar@sscomp.com
.sg To: Chris <clarson52@comcast.net>
cc: ccielab@groupstudy.com, Donny MATEO <donny.mateo@sg.ca-indosuez.com>,
24-10-2002 12:05 nobody@groupstudy.com
Subject: Re: Adv Router is not-reachable
which config u want scenario 1 or 2
scenario 1
condition :
do not use ip ospf network command when configuring the OSPF
use only subinterface in the hub router not in the spoke routers
problem
hub configured with poin to point fram relay interface pointing towards
the spoke
in the spoke no subinterface created as per the condition and left as
plain serial interface
ospf adjancy is not formed , adjusted teh spoke hello timer to match hub,
then adjancy established , loaded to full.
but non of the spoke routes installed in the hub routing table.
show ip os data router in the hub shows all the LSA of the spoke but none
got installed in the routing table
solution
created multi point sub interface in the hub router
left the spoke serial interface as it is , plain
configured neighbor in the hub
configured spoke with ip ospf priority 0
everything working fine
scenario 2
condition
use ip opsf multi point interface in the hub and use ip opf point to point
interface in the spoke
problem
adjancy is not formed due to hello mis match
solution
adjusted spoke hello interval to match hub
everything working fine
Chris <clarson52@comcast.net>
10/24/2002 11:50 AM
To: aansar@sscomp.com.sg
cc: ccielab@groupstudy.com, Donny MATEO <donny.mateo@sg.ca-indosuez.com>,
nobody@groupstudy.com
Subject: Re: Adv Router is not-reachable
Very interesting. Who is the DR for the way you have this configured? A
point 2 multipoint link needs a DR. I have never gotten this to work and
don't know of anyone who has.
I would very much like to see your configs and put it in my lab. Can you
post the config?
----- Original Message -----
From: aansar@sscomp.com.sg
To: Chris
Cc: ccielab@groupstudy.com ; Donny MATEO ; nobody@groupstudy.com
Sent: Wednesday, October 23, 2002 11:46 PM
Subject: Re: Adv Router is not-reachable
yes , as i checked adjancy is formed , LSA also propagated , but it is not
installed in the routing table ,
if you issue show ip ospf data router command in the hub router , you can
see the LSA's from that spoke but it is listed as
.
Adv Router is not-reachable
> LS age: 1625
> Options: (No TOS-capability, DC)
> LS Type: Router Links
> Link State ID: 7.7.7.7
> Advertising Router: 7.7.7.7
> LS Seq Number: 80000005
> Checksum: 0xF048
> Length: 156
> Number of Links: 11
the same scenario i tried like this
in the hub i used ip ospf multi point interface and in the spoke i used ip
opsf point to point network , then there is hello mis match , i adjusted
spoke hello interval to match hub , then everything is fine ,adjancy is
created , LSA advertised , and it is intsalled in the routing table too..
thanks guys
aa
Chris <clarson52@comcast.net>
Sent by: nobody@groupstudy.com
10/24/2002 11:27 AM
Please respond to Chris
To: aansar@sscomp.com.sg, Donny MATEO
<donny.mateo@sg.ca-indosuez.com>
cc: ccielab@groupstudy.com, nobody@groupstudy.com
Subject: Re: Adv Router is not-reachable
Not possible.
The problem is not just the timers. A sub interface will be a
point-to-point
network type and there is No DR needed. If you can't do a subinterface on
the other side then it will be non-broadcast and will need a DR.
A Physical interface is Non-broadcast and needs a DR. And in frame the DR
should be on the hub. So changing the timers is not going to do anything.
I
am quite sure this is not possible. If it is I would love to see how it is
done.
----- Original Message -----
From: <aansar@sscomp.com.sg>
To: "Donny MATEO" <donny.mateo@sg.ca-indosuez.com>
Cc: <ccielab@groupstudy.com>; <nobody@groupstudy.com>
Sent: Wednesday, October 23, 2002 10:37 PM
Subject: Re: Adv Router is not-reachable
> condition is like this
> do not use ip ospf network command when configuring the OSPF
> use only subinterface in the hub router not in the spoke routers
>
>
****************************************************************************
> Message from:
>
> A.S Ahmed Ansar
> Customer Support Group
> Seven Seas Computers.com (Singapore) Pte LTD
> email: aansar@sscomp.com.sg
> Tel:+65 551 5726 or Mobile: +65 9012 2488
> Fax:+65 5515 755
> visit us at http://www.sscomp.com.sg
>
>
***************************************************************************
>
>
>
>
> "Donny MATEO" <donny.mateo@sg.ca-indosuez.com>
> Sent by: nobody@groupstudy.com
> 10/24/2002 10:19 AM
> Please respond to "Donny MATEO"
>
>
> To: aansar@sscomp.com.sg
> cc: ccielab@groupstudy.com, nobody@groupstudy.com
> Subject: Re: Adv Router is not-reachable
>
>
> on which router are you prohibited to use ip ospf network x.x.x.x. ? And
> what is the wording. If it
> specified only one router you can use it on the other router. Or if it's
> just say don't use ip ospf
> network broadcast, you can always use ip ospf network
point-to-multipoint.
>
>
> Donny
>
>
>
> aansar@sscomp.com
> .sg To:
ccielab@groupstudy.com
>
> Sent by: cc:
> nobody@groupstudy Subject: Adv Router is
> not-reachable
> .com
>
>
> 24-10-2002 09:01
> Please respond to
> aansar
>
>
>
>
>
>
> sh ip os data router , shows
> Adv Router is not-reachable
> but adjutancy has been established already .. what could be the problem.
>
> R1
> has point to point frame relay interface towards R2
>
> R2
> normal plain serial interface (initially hello mis matches , i changed
> hello interval of R2 )
>
> Adancy has been estabilised , no problem
> but R2 routes are not visible in R1, (sh ip os data router , shows all
the
> LSA of R2 but the first line tells adv router is not reachable)
>
> Adv Router is not-reachable
> LS age: 1625
> Options: (No TOS-capability, DC)
> LS Type: Router Links
> Link State ID: 7.7.7.7
> Advertising Router: 7.7.7.7
> LS Seq Number: 80000005
> Checksum: 0xF048
> Length: 156
> Number of Links: 11
>
> thanks
> aa
(See attached file: C.htm)
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