From: jl yan (yanjunling@hotmail.com)
Date: Wed Nov 13 2002 - 02:57:00 GMT-3
I think the ttl vaule equals to 1. so it can ping each other but cannot
establish neighbor
>From: "Tao Wang" <wangtao_sh@hotmail.com>
>Reply-To: "Tao Wang" <wangtao_sh@hotmail.com>
>To: spage@nc.rr.com, ccielab@groupstudy.com
>Subject: RE: OSPF on NBMA
>Date: Wed, 13 Nov 2002 13:11:47 +0800
>
>I see this config should work.
>But my question is that in NBMA if I could ping successully whether I could
>build neigbor with the command "neighbor" even these two nodes haven't
>directly PVC.
>
>
>>From: "Jake Jake" <spage@nc.rr.com>
>>To: "Tao Wang" <wangtao_sh@hotmail.com>, <ccielab@groupstudy.com>
>>Subject: RE: OSPF on NBMA
>>Date: Wed, 13 Nov 2002 00:10:17 -0500
>>
>>Configure B as the DR. Use neighbor statements on B pointing to A and to
>C.
>>Make sure A and C had low ospf priority so they dont become DR upon
>reboot.
>>
>>
>>-----Original Message-----
>>From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of Tao
>>Wang
>>Sent: Tuesday, November 12, 2002 11:01 PM
>>To: ccielab@groupstudy.com
>>Subject: Q: OSPF on NBMA
>>
>>
>>Dear all,
>>
>>I have question on OSPF on FR NBMA.
>>
>>There are 3 nodes--- A B and C. They build a Hub-Spoke structure. B is
>HUB.
>>
>>Now I config to make C as DR and using the command "neighbor" to let B and
>>A as the neighbors of C.
>>On A B and C, I have made static maps to make them be able to ping each
>>others successfully.
>>
>>But the result is C and A couldn't build neighbor with each other.
>>I don't understand the command "neighbor" very much.C should use the
>>unicast to send the hello
>>packet to A. If C should ping A successfully, then the hello packet from C
>>should be able to get A.
>>
>>From the result, I think if two nodes want to build neighbors with each
>>other in NBMA, they should
>>have dirctly PVC between them.But I don't know why exactly.
>>
>>Does someone please help?
>>
>>Thanks & Regards
>>
>>Tao
>>
>>
>>
>>
>>
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>
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