From: Mohamed M Moustafa (mmma@gawab.com)
Date: Sun Aug 12 2007 - 10:12:00 ART
Hi Alex,
You are right if the main interface is shutdown the backup interface goes
to standby mode/disabled and would never come up.
HTH,
Mohammed Mahmoud.
Alex Steer <alex.steer@eison.co.uk> wrote on 12 Aug 2007, 03:26 PM:
Subject: RE: back interface command on point-to-point subinterface
>Sorry
>
>
>
>I thought it would be something stupid. It doesn't work if you admin
>down the subinterface.
>
>Shut down the other end and it works fine.
>
>
>
>Kind regards
>
>
>
>Alex
>
>
>
>From: Alex Steer
>Sent: 12 August 2007 13:15
>To: Group study
>Subject: back interface command on point-to-point subinterface
>
>
>
>Hi group study
>
>
>
>I am having some trouble getting the "backup interface" command to work
>on a point-to-point sub interface. Both interfaces have been tested to
>confirm that they work and I have also tried the exact same command on
>the main serial interface (that works). I shutdown the point-to-point
>subinterface and get the following:-
>
>
>
>Interface IP-Address OK? Method Status
>Protocol
>
>Serial0/0 unassigned YES NVRAM up
>up
>
>Serial0/0.401 148.1.0.4 YES NVRAM administratively
>down down
>
>Serial0/1 148.1.45.4 YES NVRAM standby
>mode/disabled down
>
>
>
>
>
>It seems like a really simple task but I can't for the life of me get it
>to work. Has anybody got any suggestions that could help me please?
>
>
>
>For completeness I have included the interface config though there is
>only one line (please note the shutdown command has been added
>intentionally to test the backup)
>
>
>
>interface Serial0/0
>
> no ip address
>
> encapsulation frame-relay
>
> no arp frame-relay
>
> no frame-relay inverse-arp
>
>
>
>interface Serial0/0.401 point-to-point
>
>backup interface Serial0/1
>
> ip address 148.1.0.4 255.255.255.0
>
> shutdown
>
>
>
>Many thanks in advance (I know someone is going to tell me that I
>haven't turned the router on or something on this one)
>
>
>
>I am trying this on a 3620 but have since tried (with the same problem
>on a 7204)
>
>
>
>
>
>Many thanks in advance
>
>
>
>Alex
>
>
>
>
>
>Cisco Internetwork Operating System Software
>
>IOS (tm) 3600 Software (C3620-J1S3-M), Version 12.3(21), RELEASE
>SOFTWARE (fc2)
>
>Technical Support: http://www.cisco.com/techsupport
>
>Copyright (c) 1986-2006 by cisco Systems, Inc.
>
>Compiled Mon 06-Nov-06 14:22 by ccai
>
>Image text-base: 0x60008B00, data-base: 0x619E8000
>
>
>
>ROM: System Bootstrap, Version 11.1(19)AA, EARLY DEPLOYMENT RELEASE
>SOFTWARE (fc1)
>
>ROM: 3600 Software (C3620-J1S3-M), Version 12.3(21), RELEASE SOFTWARE
>(fc2)
>
>
>
>Router4 uptime is 54 minutes
>
>System returned to ROM by power-on
>
>System image file is "slot0:c3620-j1s3-mz.123-21.bin"
>
>
>
>cisco 3620 (R4700) processor (revision 0x81) with 61440K/4096K bytes of
>memory.
>
>Processor board ID 10130077
>
>R4700 CPU at 80MHz, Implementation 33, Rev 1.0
>
>Bridging software.
>
>X.25 software, Version 3.0.0.
>
>TN3270 Emulation software.
>
>2 Ethernet/IEEE 802.3 interface(s)
>
>1 Token Ring/IEEE 802.5 interface(s)
>
>2 Serial network interface(s)
>
>DRAM configuration is 32 bits wide with parity disabled.
>
>29K bytes of non-volatile configuration memory.
>
>16384K bytes of processor board System flash (Read/Write)
>
>16384K bytes of processor board PCMCIA Slot0 flash (Device not
>programmable)
>
>
>
>
>
>Cisco IOS Software, 7200 Software (C7200-JK9S-M), Version 12.3(14)T7,
>RELEASE SOFTWAR
>
>E (fc2)
>
>Technical Support: http://www.cisco.com/techsupport
>
>Copyright (c) 1986-2006 by Cisco Systems, Inc.
>
>Compiled Thu 23-Mar-06 04:43 by pwade
>
>
>
>ROM: System Bootstrap, Version 12.1(20000914:181332) [bwhatley-npe200
>102], DEVELOPME
>
>NT SOFTWARE
>
>BOOTLDR: 7200 Software (C7200-BOOT-M), Version 12.0(9), RELEASE SOFTWARE
>(fc1)
>
>
>
>Router6 uptime is 1 hour, 6 minutes
>
>System returned to ROM by power-on
>
>Running default software
>
>
>
>
>
>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 7206 (NPE200) processor (revision B) with 114688K/16384K bytes of
>memory.
>
>Processor board ID 8770749
>
>R5000 CPU at 200MHz, Implementation 35, Rev 2.1, 512KB L2 Cache
>
>6 slot midplane, Version 1.3
>
>
>
>Last reset from power-on
>
>
>
>Number of Fast PAs = 2
>
>Number of Fast+Medium PAs = 2
>
>Total number of PA bandwidth points consumed = 500
>
>Please refer to the following document "Cisco 7200 Series Port
>
>Adaptor Hardware Configuration Guidelines" on CCO <www.cisco.com>,
>
>for c7200 bandwidth points oversubscription/usage guidelines.
>
>
>
>3 FastEthernet interfaces
>
>4 Serial interfaces
>
>125K bytes of NVRAM.
>
>4096K bytes of packet SRAM memory.
>
>
>
>46976K bytes of ATA PCMCIA card at slot 0 (Sector size 512 bytes).
>
>4096K bytes of Flash internal SIMM (Sector size 256K).
>
>Configuration register is 0x2102
>
>
>
>
>
>
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