Hi,

In the following capture you can see that although the router accepts the neighbor command under ospf, the command is rejected after a reload, so you loose ospf connectivity on R5.


=================================================================================================

Rack6R5#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Rack6R5(config)#router ospf 1
Rack6R5(config-router)# neighbor 163.6.0.3
Rack6R5(config-router)# neighbor 163.6.0.4
Rack6R5(config-router)#^Z
Rack6R5#
*Mar 29 05:39:42.167: %OSPF-5-ADJCHG: Process 1, Nbr 150.6.3.3 on Serial0/0 from LOADING to FULL,
Loading Done
*Mar 29 05:39:42.199: %OSPF-5-ADJCHG: Process 1, Nbr 150.6.4.4 on Serial0/0 from LOADING to FULL,
Loading Done
*Mar 29 05:39:43.087: %SYS-5-CONFIG_I: Configured from console by console
Rack6R5#


Rack6R5#sh run | b router ospf 1
router ospf 1
router-id 150.6.5.5
log-adjacency-changes
area 1 virtual-link 150.6.4.4
area 57 stub
network 150.6.5.5 0.0.0.0 area 0
network 163.6.0.5 0.0.0.0 area 0
network 163.6.5.5 0.0.0.0 area 5
network 163.6.45.5 0.0.0.0 area 1
network 163.6.57.5 0.0.0.0 area 57
neighbor 163.6.0.3
neighbor 163.6.0.4
!


Rack6R5#wr
Building configuration...
[OK]
Rack6R5#


Rack6R5#reload
Proceed with reload? [confirm]

*Mar 29 05:28:10.999: %SYS-5-RELOAD: Reload requested by console. Reload Reason: Reload Command.
*Mar 29 05:28:11.171: %BGP-5-ADJCHANGE: neighbor 150.6.4.4 Down Peer closed the session
*Mar 29 05:28:11.171: %BGP-5-ADJCHANGE: neighbor 163.6.0.3 Down Peer closed the session
*Mar 29 05:28:11.171: %BGP-5-ADJCHANGE: neighbor 163.6.57.7 Down Peer closed the session
System Bootstrap, Version 11.1(20)AA1, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)
Copyright (c) 1999 by cisco Systems, Inc.
C3600 processor with 131072 Kbytes of main memory
Main memory is configured to 64 bit mode with parity disabled

program load complete, entry point: 0x80008000, size: 0x1f1be80
Self decompressing the image :
#####################################################################################################################################################################
[OK]

Smart Init is disabled. IOMEM set to: 15

Using iomem percentage: 15

Restricted Rights Legend

Use, duplication, or disclosure by the Government is
subject to restrictions as set forth in subparagraph
(c) of the Commercial Computer Software - Restricted
Rights clause at FAR sec. 52.227-19 and subparagraph
(c) (1) (ii) of the Rights in Technical Data and Computer
Software clause at DFARS sec. 252.227-7013.

cisco Systems, Inc.
170 West Tasman Drive
San Jose, California 95134-1706



Cisco IOS Software, 3600 Software (C3640-JK9O3S-M), Version 12.4(12), RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2006 by Cisco Systems, Inc.
Compiled Fri 17-Nov-06 13:59 by prod_rel_team
Image text-base: 0x60008DF8, data-base: 0x6293E000


This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to
export@cisco.com.

Cisco 3640 (R4700) processor (revision 0x00) with 111616K/19456K bytes of memory.
Processor board ID 13831044
R4700 CPU at 100MHz, Implementation 33, Rev 1.0
2 Ethernet interfaces
2 Serial interfaces
DRAM configuration is 64 bits wide with parity disabled.
125K bytes of NVRAM.
32768K bytes of processor board System flash (Read/Write)

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


Press RETURN to get started!



Rack6R5#
Rack6R5#sh run | b router ospf 1
router ospf 1
router-id 150.6.5.5
log-adjacency-changes
area 1 virtual-link 150.6.4.4
area 57 stub
network 150.6.5.5 0.0.0.0 area 0
network 163.6.0.5 0.0.0.0 area 0
network 163.6.5.5 0.0.0.0 area 5
network 163.6.45.5 0.0.0.0 area 1
network 163.6.57.5 0.0.0.0 area 57
!
=================================================================================================


Edited by Tassos (11/24/07 04:20 PM)