From: Jorge Mastrapa (jmastrap@xxxxxxxxx)
Date: Tue Feb 27 2001 - 20:29:20 GMT-3
Fabricio et. all.
Ethernet is a broadcast environment, and since you did not posted your
configs.. Judging by the sh commands and your question you configured
network statements on the interfaces, that's the cause of your problems..
Take a look at my examples below.. I'm fried now, and not logged into my
routers ( commands by memory ) but, if you are configuring OSPF in a LAN
environment you only need..
When you configure Point-to-Point or Point-to-Multipoint you will have
adjacencies, but not DR or BDR.. ( Since the process thinks there are only
two routers on that link so, no need to have a central brain to distribute
LSA information..
The routers don't see each other because if you are going to configure
neighbors you must have a non broadcast network..
R1
int e 0
ip add 1.1.1.1 255.255.255.0
router ospf 10
network 1.1.1.0 0.0.0.255 area 0
R2
int e 0
ip add 1.1.1.2 255.255.255.0
router ospf 10
net 1.1.1.0 0.0.0.255 area 0
OK, you should use the Loopback for router ID but you DON'T have to..
NOW if you want to configure the ethernet network as non-broadcast that's
different.. Then the neighbor command will work..
R1
int e 0
ip add 1.1.1.1 255.255.255.0
ip ospf network non-broadcast
router ospf 10
network 1.1.1.0 0.0.0.255 area 0
neighbor 1.1.1.2
R2
int e 0
ip add 1.1.1.2 255.255.255.0
ip ospf network non-broadcast
router ospf 10
net 1.1.1.0 0.0.0.255 area 0
neighbor 1.1.1.1
Please see
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121cgcr/ip_c
/ipcprt2/1cdospf.htm#22084 for additional info..
my $.02
J.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
sanjay
Sent: Tuesday, February 27, 2001 5:56 PM
To: Steven Weber; Fabricio Aponte; ccielab@groupstudy.com
Subject: Re: IP OSPF neigh in INIT/DROTHER state
Yep..you right. I was thinking Frame Relay.
----- Original Message -----
From: "Steven Weber" <itweber@earthlink.net>
To: "Fabricio Aponte" <fabricio@ev1.net>; <ccielab@groupstudy.com>; "sanjay"
<ccienxtyear@hotmail.com>
Sent: Monday, February 26, 2001 5:00 PM
Subject: Re: IP OSPF neigh in INIT/DROTHER state
>
> ethernet is not a point-to-point network even if there are only 2 hosts on
> the network
>
>
> ----- Original Message -----
>
> From: sanjay
>
>
> To: ccielab@groupstudy.com ;Fabricio
> Aponte
>
> Sent: 2/26/01 8:01:02 PM
>
> Subject: Re: IP OSPF neigh in INIT/DROTHER
> state
>
>
>
>
>
> I think on a point-to-point network, you won't have a DR or a BDR.
>
>
>
> thanks,
>
>
>
> ----- Original Message -----
>
> From: "Fabricio Aponte" fabricio@ev1.net
>
> To: ccielab@groupstudy.com
>
> Sent: Monday, February 26, 2001 12:29 PM
>
> Subject: IP OSPF neigh in INIT/DROTHER state
>
>
>
>
>
> I got two routers connected to each other via an ethernet
> hub. R2 and R5.
>
> This is the show ip ospf neigh on r 2 and show ip ospf int e 0 on
> both
>
> routers. Both routers are electing each other as the DR and
> no BDR (they
>
> do
>
> not see each other).
>
>
>
> Why are these two guys not electing a DR?
>
> Why is R5 not even seeing R2 as a neighbor?
>
>
>
> r2#show ip ospf neigh
>
>
>
> Neighbor ID Pri
> State Dead
> Time Address
>
> Interface
>
> 172.168.91.1 1
> INIT/DROTHER 00:00:30 216.12.210.81
>
> Ethernet0
>
>
>
>
>
> r2#show ip ospf int e 0
>
> Ethernet0 is up, line protocol is up
>
> Internet Address 216.12.210.82/24, Area 0
>
> Process ID 99, Router ID 100.100.100.1, Network Type
> BROADCAST, Cost: 10
>
> Transmit Delay is 1 sec, State DR, Priority 1
>
> Designated Router (ID) 100.100.100.1, Interface address
> 216.12.210.82
>
> No backup designated router on this network
>
> Timer intervals configured, Hello 10, Dead 40, Wait 40,
> Retransmit 5
>
> Hello due in 00:00:04
>
> Index 1/1, flood queue length 0
>
> Next 0x0(0)/0x0(0)
>
> Last flood scan length is 0, maximum is 0
>
> Last flood scan time is 0 msec, maximum is 0 msec
>
> Neighbor Count is 1, Adjacent neighbor count is 0
>
> Suppress hello for 0 neighbor(s)
>
> r2#
>
> [Resuming connection 5 to r5 ... ]
>
>
>
> r5#show ip ospf int e 0
>
> Ethernet0 is up, line protocol is up
>
> Internet Address 216.12.210.81/24, Area 0
>
> Process ID 99, Router ID 172.168.91.1, Network Type
> BROADCAST, Cost: 10
>
> Transmit Delay is 1 sec, State DR, Priority 1
>
> Designated Router (ID) 172.168.91.1, Interface address
> 216.12.210.81
>
> No backup designated router on this network
>
> Timer intervals configured, Hello 10, Dead 40, Wait 40,
> Retransmit 5
>
> Hello due in 00:00:09
>
> Neighbor Count is 0, Adjacent neighbor count is 0
>
> Suppress hello for 0 neighbor(s)
>
>
>
> Thank you,
>
>
>
>
>
> fabricio
>
>
>
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