From: Serhat Aslan (serhatworks@gmail.com)
Date: Wed Aug 01 2007 - 14:50:28 ART
Hi;
Probably, you forgot to shut inverse-arp state, so previously defined
DLCI's mapped them self automatic at layer2'; at layer3 they start to
process ospf multicast packets. I assume, you did right ospf configuration.
Serhat Aslan
On 8/1/07, Tony Schaffran <groupstudy@cconlinelabs.com> wrote:
>
> The most common problem to this issue is the switch is configured with
> ethernet interfaces in the wrong vlans and the OSPF neighbors are seeing
> each other over the ethernet as well as over the FR network.
>
>
> Tony Schaffran
> Network Analyst
> CCIE #11071
> CCNP, CCNA, CCDA,
> NNCDS, NNCSS, CNE, MCSE
>
> www.cconlinelabs.com
> Your #1 choice for online Cisco rack rentals.
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> ISolveSystems
> Sent: Wednesday, August 01, 2007 9:57 AM
> To: Cisco certification
> Subject: OSPF:- Received invalid packet: mismatch area ID
>
> Hello Experts,
> R4 has p2p FR connection to R5. R3 has p2p FR connection to R5. R5 uses
> subinterface to connect to R4 and R3. Error below is received on R3. I
> see
> the the area are configured alright...Please help.
>
> Aug 1 17:29:38.887: %OSPF-4-ERRRCV: Received invalid packet: mismatch
> area
> ID, from backbone area must be virtual-link but not found from 163.1.54.4,
> Serial0/0/0
>
>
>
>
> Rack1R3#sh ip osp int
> Serial0/0/0 is up, line protocol is up
> Internet Address 163.1.35.3/24, Area 1
> Process ID 1, Router ID 150.1.3.3, Network Type POINT_TO_POINT, Cost: 64
> Transmit Delay is 1 sec, State POINT_TO_POINT,
> Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
> oob-resync timeout 40
> Hello due in 00:00:02
> Supports Link-local Signaling (LLS)
> 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 150.1.5.5
> Suppress hello for 0 neighbor(s)
>
>
>
> Rack1R5#sh ip osp int
> Serial0/0/0.54 is up, line protocol is up
> Internet Address 163.1.54.5/24, Area 0
> Process ID 1, Router ID 150.1.5.5, Network Type POINT_TO_POINT, Cost: 64
> Transmit Delay is 1 sec, State POINT_TO_POINT,
> Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
> oob-resync timeout 40
> Hello due in 00:00:08
> Supports Link-local Signaling (LLS)
> 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 150.1.4.4
> Suppress hello for 0 neighbor(s)
> Serial0/0/0.35 is up, line protocol is up
> Internet Address 163.1.35.5/24, Area 1
> Process ID 1, Router ID 150.1.5.5, Network Type POINT_TO_POINT, Cost: 64
> Transmit Delay is 1 sec, State POINT_TO_POINT,
> Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
> oob-resync timeout 40
> Hello due in 00:00:08
> Supports Link-local Signaling (LLS)
> Index 1/2, 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 150.1.3.3
> Suppress hello for 0 neighbor(s)
> Rack1R5#
>
>
> Rack1R4(config-router)#do sh ip osp int
> Serial0/0/0 is up, line protocol is up
> Internet Address 163.1.54.4/24, Area 0
> Process ID 1, Router ID 150.1.4.4, Network Type POINT_TO_POINT, Cost: 64
> Transmit Delay is 1 sec, State POINT_TO_POINT,
> Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
> oob-resync timeout 40
> Hello due in 00:00:07
> Supports Link-local Signaling (LLS)
> 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 150.1.5.5
> Suppress hello for 0 neighbor(s)
> Rack1R4(config-router)#
>
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