Re: neighborship in OSPF between different network types.

Thanks Ali ...I thought that they should not reach Full status

  ----- Original Message -----
  From: Ali El Moussaoui
  To: Mohamed El Henawy
  Cc: Naufal Jamal ; ccielab_at_groupstudy.com
  Sent: Monday, September 14, 2009 1:42 PM
  Subject: Re: neighborship in OSPF between different network types.

  Mohamed,

  The status is full but they will never exchange routes. Check that R2
consider R1 as BDR (broadcast network) while R1 didnt go DR/BDR election
process (p2p network). This is due to the incompatibility of network types.

  As mentioned above once u get 2 compatible networks u can tweak the timers
if needed.

  Ali

  On Mon, Sep 14, 2009 at 12:35 PM, Mohamed El Henawy <m.henawy_at_link.net>
wrote:

    I can see status is Full...so whats wrong then

    ----- Original Message ----- From: "Naufal Jamal" <naufalccie_at_yahoo.in>
    To: <ccielab_at_groupstudy.com>
    Sent: Monday, September 14, 2009 10:22 AM
    Subject: neighborship in OSPF between different network types.

      HI Guys ,

      correct me if I am wrong.

      I have two routers R1 and R2 directly connected.Ospf is configured on
them.

      R1 's network type is point-to-point and R2 is of broadcast type.

      I was bit amazed when the neighborship came up between them.then I
realised
      may be its the same hello/dead timer interval due to which they came
up.they
      became neighbours but not adjacent as they were not exchanging routes
with
      each other.Can some one help me understanding this concept or give me a
link
      for it ?

      R2#sh ip ospf ne
      Neighbor ID Pri State Dead Time Address Interface
      1.1.1.1 1 FULL/BDR 00:00:38 1.1.1.1
      FastEthernet0/
      0
      R2#sh ip ospf net
      R2#sh ip ospf int
      Loopback1 is up, line protocol is up
       Internet Address 10.20.10.1/24, Area 0
       Process ID 1, Router ID 1.1.1.2, Network Type LOOPBACK, Cost: 1
       Loopback interface is treated as a stub Host
      FastEthernet0/0 is up, line protocol is up
       Internet Address 1.1.1.2/24, Area 0
       Process ID 1, Router ID 1.1.1.2, Network Type BROADCAST, Cost: 1
       Transmit Delay is 1 sec, State DR, Priority 1
       Designated Router (ID) 1.1.1.2, Interface address 1.1.1.2
       Backup Designated router (ID) 1.1.1.1, Interface address 1.1.1.1
       Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
        Hello due in 00:00:02
       Index 1/1, flood queue length 0
       Next 0x0(0)/0x0(0)
       Last flood scan length is 1, maximum is 2
       Last flood scan time is 0 msec, maximum is 0 msec
       Neighbor Count is 1, Adjacent neighbor count is 1
        Adjacent with neighbor 1.1.1.1 (Backup Designated Router)
       Suppress hello for 0 neighbor(s)

      R1#sh ip ospf ne
      Neighbor ID Pri State Dead Time Address Interface
      1.1.1.2 1 FULL/ - 00:00:32 1.1.1.2
      FastEthernet0/
      0
      R1#sh ip ospf int
      FastEthernet0/0 is up, line protocol is up
       Internet Address 1.1.1.1/24, Area 0
       Process ID 1, Router ID 1.1.1.1, Network Type POINT_TO_POINT, Cost: 1
       Transmit Delay is 1 sec, State POINT_TO_POINT,
       Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
        Hello due in 00:00:02
       Index 1/1, flood queue length 0
       Next 0x0(0)/0x0(0)
       Last flood scan length is 1, maximum is 1
       Last flood scan time is 0 msec, maximum is 0 msec
       Neighbor Count is 1, Adjacent neighbor count is 1
        Adjacent with neighbor 1.1.1.2
       Suppress hello for 0 neighbor(s)

      Thanks,
      Naufal

          Try the new Yahoo! India Homepage. Click here.
      http://in.yahoo.com/trynew

      Blogs and organic groups at http://www.ccie.net

      _______________________________________________________________________
      Subscription information may be found at:
      http://www.groupstudy.com/list/CCIELab.html

    -------------------------------------------------------------------------
-------

    No virus found in this incoming message.
    Checked by AVG - www.avg.com
    Version: 8.5.409 / Virus Database: 270.13.96/2369 - Release Date: 09/14/09
05:51:00

    Blogs and organic groups at http://www.ccie.net

    _______________________________________________________________________
    Subscription information may be found at:
http://www.groupstudy.com/list/CCIELab.html

-----------------------------------------------------------------------------
-

  No virus found in this incoming message.
  Checked by AVG - www.avg.com
  Version: 8.5.409 / Virus Database: 270.13.96/2369 - Release Date: 09/14/09
05:51:00

Blogs and organic groups at http://www.ccie.net
Received on Mon Sep 14 2009 - 12:57:39 ART