From: Alexei Monastyrnyi (alexeim@orcsoftware.com)
Date: Thu Nov 02 2006 - 14:51:23 ART
Folks.
Just for those who is going to come across scenarios with OSPF NBMA
neighbors and VL on the same NBMA hub router. After testing and chatting
off0-line with GS members, it was confirmed that this type of scenario
does not work. Petr L can point to Bug ID.
My suggestion is replace NBMA neighbors with something working,correctly
on local-link level for these training scenarios, provided that VLs are
usually more important for such scenarios.
A.
PS
Victor, I tried to reach you off line but without any luck
-------------------------------------------------------------------------------
El mensaje de error comienza mas abajo.
-------------------------------------------------------------------------------
----- The following addresses had permanent fatal errors -----
<cvictor@protokolgroup.com>
(reason: 554 5.4.6 Too many hops)
Alexei Monastyrnyi wrote:
> Hi Group.
> I am sorry to bring this up again, but I have this problem and cannot
> get rid of it across several scenarios.
>
> They all have one in common. OSPF NBMA physical interface on HUB
> router with neighbors configured under OSPF process. FR interface to
> SPOKE routers is 100% NBMA type, see below.
>
> The router accepted neighbor command for OSPF but after reload refused
> it with
> OSPF: Neighbor command is allowed only on NBMA and point-to-multipoint
> networks
>
> After that I cannot apply this even interactively (which worked in
> other scenarios)
>
> R1(config-router)#router ospf 1
> R1(config-router)#nei 1.1.12.2
> OSPF: Neighbor command is allowed only on NBMA and point-to-multipoint
> networks
>
> I think I am missing something here.... Could someone be so kind to
> shed a lite on this?
>
> TIA
> A.
>
> ============ configurations and show output ==============
>
> router ospf 1
> router-id 1.1.1.1
> log-adjacency-changes
> area 1 virtual-link 5.5.5.5
> redistribute connected subnets route-map conn2ospf
> redistribute rip subnets route-map rip2ospf
> network 1.1.12.1 0.0.0.0 area 2
> network 1.1.13.1 0.0.0.0 area 1
>
> interface Serial0/0
> description ---> DLCI 102 103 104 105 106 <---
> ip address 1.1.12.1 255.255.255.0
> encapsulation frame-relay
> ip ospf network non-broadcast
> ip ospf priority 255
> clock rate 1000000
> frame-relay map ip 1.1.12.1 102
> frame-relay map ip 1.1.12.2 102 broadcast
> no frame-relay inverse-arp
>
> Serial0/0 is up, line protocol is up
> Internet Address 1.1.12.1/24, Area 2
> Process ID 1, Router ID 1.1.1.1, Network Type NON_BROADCAST, Cost: 64
> Transmit Delay is 1 sec, State DR, Priority 255
> Designated Router (ID) 1.1.1.1, Interface address 1.1.12.1
> No backup designated router on this network
> Timer intervals configured, Hello 30, Dead 120, Wait 120, Retransmit 5
> oob-resync timeout 120
> Hello due in 00:00:06
> Index 1/2, 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 0, Adjacent neighbor count is 0
> Suppress hello for 0 neighbor(s)
>
> Victor Cappuccio wrote:
>> Hi Guys.
>>
>>
>>
>> Playing around with the different OSPF network types, I had
>> configured on
>> one Hub Frame-relay Router the neighbor command and in the interface
>> that
>> connects to the 2 Spokes is configured the default network type from
>> NBMA
>>
>>
>>
>> Rack1R4#show ip ospf inter s0/0.255 | in Net
>> Process ID 1, Router ID 150.1.4.4, Network Type NON_BROADCAST,
>> Cost: 64
>>
>>
>>
>> Rack1R4#show run | in neigh
>>
>> neighbor 150.1.245.1
>>
>> neighbor 150.1.245.3
>>
>>
>> But when I reload the router, it shows me this
>>
>>
>>
>> OSPF: Neighbor command is allowed only on NBMA and point-to-multipoint
>> networks
>>
>> OSPF: Neighbor command is allowed only on NBMA and point-to-multipoint
>> networks
>>
>>
>>
>> And the neighbor command disappears ?
>>
>>
>>
>> Rack1R4#show ver | in IOS|Compiled
>>
>>
>> IOS (tm) C2600 Software (C2600-J1S3-M), Version 12.3(18), RELEASE
>> SOFTWARE
>> (fc3)
>> Compiled Wed 15-Mar-06 14:15 by dchih
>>
>>
>>
>>
>> Any thought
>>
>> Thanks
>>
>> Victor.-
>>
>> _______________________________________________________________________
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>
> _______________________________________________________________________
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