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Cisco IOS Feature Navigator

Published February 9, 2009

So you got your cisco device, but what if you want to quickly find the right IOS, and other software releases for features you want to run on your network. There are many different versions of the cisco IOS for each device. I came accross this handy cisco website which you can use to research software releases by searching by image name, platform, product code etc. Once you select what you want, it will give you more information about the particular IOS for your device, and what it can run.

So checkout:

http://tools.cisco.com/ITDIT/CFN/jsp/index.jsp

I believe it will come in quite handy!

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Some more Cisco 877 Tips…

Published February 6, 2009

Need to know what your dsl sync stats are and more details about the link?

cisco877>sh dsl int

Or as in my case improving the attenuation on the upstream by 3dB..we can modify the gain tx-offset value to 3

Enter exec mode:

cisco877#conf t
cisco877(config)#int atm0
cisco877(config-if)#dsl gain-setting tx-offset 3

To show ppooe uptime on the session:

Look at the active time column

cisco877#sh caller

To show logs on the modem to see activity:

cisco877#sh log

Need to troubleshoot pppoe events, atm, errors, and see more detail, simply issue..

cisco877#debug pppoe events
cisco877#debug pppoe errors
cisco877#debug atm events
cisco877#debug atm errors

These details will then be logged into the log file as above. To remove the debugging simply issue the no statement at the front.

If you have any more tips,hints, recommendations, please comment below 🙂

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IOS downgrade Cisco 877

Published February 6, 2009

I decided to downgrade to IOS c870-advsecurityk9-mz.124-15.T6.bin so I could try ADSL firmware AMR-3.0.043.bin, ver 20/22 of this IOS doesnt work with this firmware.

So far ive noticed 3.0.043 has slightly less Reed Solomon/CRC/Header errors, and notice improved performance. On previous firmware I noticed on upstream, I would get quite a few errors upon sync however with this firmware it seems fine and shows 0.

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