Hello,
thank you very much for your answer. I've updated the settings and I have gained a new forum.
By now not working. I could not use the exact settings as you have made me because the version of IOS does not.
A router with ios 837: c837-k9o3sy6-mz.124-25d.bin
What is missing from the configuration to run the loopback?
Cisco IOS Software, C837 Software (C837-K9O3SY6-M), Version 12.4(25d), RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2010 by Cisco Systems, Inc.
Compiled Wed 18-Aug-10 12:51 by prod_rel_team
ROM: System Bootstrap, Version 12.2(11r)YV1, RELEASE SOFTWARE (fc1)
System returned to ROM by reload
System restarted at 17:04:51 UTC Thu Jan 17 2013
System image file is "flash:c837-k9o3sy6-mz.124-25d.bin"
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 C837 (MPC857DSL) processor (revision 0x501) with 44237K/4915K bytes of memory.
Processor board ID xxx, with hardware revision 0000
CPU rev number 7
2 Ethernet interfaces
4 FastEthernet interfaces
1 ATM interface
128K bytes of NVRAM.
12288K bytes of processor board System flash (Read/Write)
2048K bytes of processor board Web flash (Read/Write)
Configuration register is 0x2102
