From: Jongsoo.Kim@Intelsat.com
Date: Tue Mar 22 2005 - 19:31:37 GMT-3
My understanding is that it will send hello only after it received a hello.
But it won't send hello if it doesn't receive hello first.
Also, this will be probably only applied to Broadcast/NBMA type of network.
I might be wrong though.
Jongsoo
-----Original Message-----
From: Stuart.Juggins@computacenter.com
[mailto:Stuart.Juggins@computacenter.com]
Sent: Tuesday, 22 March, 2005 5:06 PM
To: Kim, Jongsoo; mwhite23@gmail.com
Cc: ccielab@groupstudy.com; bdennis@internetworkexpert.com
Subject: RE: OSPF NETWORK TYPE
Not sure if that's right?
The priority command is used to alter the election of the DR/BDR on the
network. By setting the priority to 0 (zero) it's configuring the router
(or that interface) not to participate in the election of the DR/BDR. The
router will still send and receive hello's otherwise how would a neighbor
relationship be formed?
Stuart.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Jongsoo.Kim@Intelsat.com
Sent: 22 March 2005 21:15
To: mwhite23@gmail.com
Cc: ccielab@groupstudy.com; bdennis@internetworkexpert.com
Subject: RE: OSPF NETWORK TYPE
Matt
I think "ip ospf priority 0" under interface make router not send Hello
unless it received. On another way to explain this, it will not initiate
sending hello. Perhaps this is reason that neighbor command won't be
allowed because neighbor command will try to make router initiate sending
hello0...
Jongsoo
-----Original Message-----
From: Brian Dennis [mailto:bdennis@internetworkexpert.com]
Sent: Tuesday, 22 March, 2005 4:07 PM
To: Matt White
Cc: ccielab@groupstudy.com
Subject: RE: OSPF NETWORK TYPE
The IOS will not allow you to put both commands in.
Router#wr t
<snip>
!
interface Serial0/0
ip address 1.1.1.1 255.255.255.0
encapsulation frame-relay
ip ospf priority 0
!
router ospf 1
router-id 1.1.1.1
log-adjacency-changes
network 0.0.0.0 255.255.255.255 area 0
!
<snip>
Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#router ospf 1 Router(config-router)#neighbor 1.1.1.2
Router(config-router)#do term len 5 Router(config-router)#do sho run | be
router ospf router ospf 1 router-id 1.1.1.1 log-adjacency-changes
network 0.0.0.0 255.255.255.255 area 0
!
Router(config-router)#int s0/0
Router(config-if)#no ip os pri 0
Router(config)#router ospf 1
Router(config-router)#neighbor 1.1.1.2
Router(config-router)#do sho run | be router ospf
router ospf 1
router-id 1.1.1.1
log-adjacency-changes
network 0.0.0.0 255.255.255.255 area 0
neighbor 1.1.1.2
Let me ask you this, in what situation would you need both commands
applied?
Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
bdennis@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
Toll Free: 877-224-8987
Direct: 775-745-6404 (Outside the US and Canada)
-----Original Message-----
From: Matt White [mailto:mwhite23@gmail.com]
Sent: Tuesday, March 22, 2005 12:54 PM
To: Brian Dennis
Cc: Kunle Ayodele; ccielab@groupstudy.com; generalccie@yahoo.com
Subject: Re: OSPF NETWORK TYPE
Brian, in regard to the following, why not?
"you can not put the OSPF 'neighbor'
command on the spokes if they also have the "ip ospf priority" command
applied to the interface."
On Tue, 22 Mar 2005 01:55:42 -0500, Brian Dennis
<bdennis@internetworkexpert.com> wrote:
> You do not need the OSPF "neighbor" command on the spokes. It is only
> need on the hub. As a side note, you can not put the OSPF "neighbor"
> command on the spokes if they also have the "ip ospf priority" command
> applied to the interface.
>
> Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
> bdennis@internetworkexpert.com
>
> Internetwork Expert, Inc.
> http://www.InternetworkExpert.com
> Toll Free: 877-224-8987
> Direct: 775-745-6404 (Outside the US and Canada)
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> Kunle Ayodele
> Sent: Monday, March 21, 2005 10:35 PM
> To: ccielab@groupstudy.com
> Cc: generalccie@yahoo.com
> Subject: OSPF NETWORK TYPE
>
> Hi Micheal,
> Looking thru ur configs,for a NON-BROADCAST OSPF
> network type, who would also need a neigbour command
> on the spoke..U could also remove the ip
> split-horizon(though not needed cos ospf is a link
> protocol- but it sure keeps ur config clean and easy
> to troobleshoot..
> Regards
> Kunle
> --- Michael Wong <generalccie@yahoo.com> wrote:
> > Hi,
> >
> > I have a hub-spoke frame relay cloud, the hub (R6)
> > is multipoint subinterface, spokes (R7, R8) are
> > physical interface. The OSPF network type is Non-broadcast. I have
> > put neigh statements on hub router R6, and put ip ospf priority 0 on
> > each spoke router frame interface. But R6 still can not form
> > neighbor relationship with R8. Am I missing some
> > config here?
> >
> > R6#wr t
> > interface Serial0
> > no ip address
> > encapsulation frame-relay
> >
> > interface Serial0.3 multipoint
> > ip address 167.78.86.1 255.255.255.248
> > frame-relay map ip 167.78.86.2 608 broadcast
> > frame-relay map ip 167.78.86.3 607 broadcast
> >
> > router ospf 1
> > router-id 6.6.6.6
> > log-adjacency-changes
> > network 142.52.0.0 0.0.0.255 area 1
> > network 167.78.86.0 0.0.0.7 area 0
> > neighbor 167.78.86.3
> > neighbor 167.78.86.2
> >
> > R6#sho ip ospf ne
> > Neighbor ID Pri State Dead Time
> > Address Interface
> > 7.7.7.7 0 FULL/DROTHER 00:01:41
> > 167.78.86.3 Serial0.3
> > N/A 0 ATTEMPT/DROTHER -
> > 167.78.86.2 Serial0.3
> >
> > R8#wr t
> > interface Serial0/0
> > ip address 167.78.86.2 255.255.255.248
> > encapsulation frame-relay
> > ip split-horizon
> > ip ospf priority 0
> > frame-relay map ip 167.78.86.1 806 broadcast
> > frame-relay map ip 167.78.86.3 806 broadcast
> >
> > router ospf 1
> > router-id 8.8.8.8
> > log-adjacency-changes
> > network 167.78.86.0 0.0.0.7 area 0
> >
> > R8#sho ip ospf ne
> > Neighbor ID Pri State Dead Time
> > Address Interface
> > 6.6.6.6 1 INIT/DROTHER 00:01:04
> > 167.78.86.1 Serial0/0
> >
> > R7#wr t
> > interface Serial0/0
> > ip address 167.78.86.3 255.255.255.248
> > encapsulation frame-relay
> > ip split-horizon
> > ip ospf priority 0
> > frame-relay map ip 167.78.86.1 706 broadcast
> > frame-relay map ip 167.78.86.2 706 broadcast
> > !
> > router ospf 1
> > router-id 7.7.7.7
> > log-adjacency-changes
> > network 167.78.86.0 0.0.0.7 area 0
> >
> > R7#sho ip osp ne
> > Neighbor ID Pri State Dead Time
> > Address Interface
> > 6.6.6.6 1 FULL/DR 00:01:34
> > 167.78.86.1 Serial0/0
> >
> >
> >
> > ---------------------------------
> > Do you Yahoo!?
> > Yahoo! Small Business - Try our new resources site!
> >
> >
> >
>
This archive was generated by hypermail 2.1.4 : Sun Apr 03 2005 - 17:56:50 GMT-3