Posts Tagged ‘ios’

IOS Image Verification

July 13th, 2010 No comments

The Image Verification feature, added in Cisco IOS Software Releases 12.3(4)T, 12.0(26)S, and 12.2(18)S, builds on the MD5 File Validation functionality to more easily allow network administrators to verify the integrity of an image file that is loaded on the Cisco IOS file system of a device. Read more…

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ACL for Internet Facing Router

April 5th, 2010 No comments

A base Access List for any internet facing router, re-produced from Mike Storm and Jeremy Cioara’s blogs:

Read more…

Categories: Network Design, Security Tags: ,

Cisco IOS version 15.0

April 1st, 2010 No comments

Cisco has announced a major change in the IOS versions, from the latest version 12.4 up to version 15.0

This is a major change and introduces some key changes, particularly to the way in which additional features are now “activated” using a licence key. Read more…

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Executing Commands on Remote Cisco Device while logged into Local Device

March 27th, 2010 No comments

This tip shows you how one device can execute remote commands on other Cisco routers or switches to receive command outputs on the local terminal. Read more…

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IOS Version Numbering

March 26th, 2010 No comments

Cisco IOS is versioned using three numbers and some letters, in the general form a.b(c.d)e, where: Read more…

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Understanding the Catalyst 3550 Software Image – SMI and EMI

March 23rd, 2010 No comments

The 3550 is either a Layer 2 (L2) or Layer 3 (L3) switch, which depends on the software version and feature set that you install.

The naming conventions for 3550 images begin with either of these: Read more…

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