Articles in the Networking category

  1. Alternative to 'show policy-map interface' on Catalyst Switches

    Posted on in Networking

    Old Cisco Systems LogoIf you're using policy-maps on your Cisco Catalyst switches to handle rate-limiting, you may have noticed that on some models, the show policy-map interface command does not seem to work. The CLI accepts the command and returns properly formatted output, but the output is all zeroes. There is no information …

  2. Brand New ME3400G Can't Ping!

    Posted on in Networking

    Old Cisco Systems LogoAfter cracking open a brand new Catalyst ME3400G, we weren't able to get it upgraded to the latest version of software. In fact, we couldn't even ping anything on the local subnet.

    In order to use Cisco's Metro Ethernet switches, it's important to understand the new concepts that are introduced …

  3. Does load-interval Affect Performance?

    Posted on in Networking

    Old Cisco Systems LogoI was recently part of a discussion regarding whether or not lowering the load-interval on a Cisco router or switch interface from the default of 300 seconds had an impact on performance. Both sides made good points, but both were based on assumption and conjecture.

    5 minute input rate 213000 …
  4. New-Style TACACS+ Configuration

    Posted on in Networking

    Old Cisco System Logo While working with Cisco Catalyst IOS image 12.2(58)SE1, I noticed that configuration for TACACS+ had changed. My first clue that there was a problem was the following:

    switch(config)#tacacs-server host
    This cli will be deprecated soon. Use new server cli


    It …

  5. Exercising My Belkin N1 Vision Router Lifetime Warranty

    Posted on in Networking

    Belkin N1 Vision Wireless Router F5D8232-4A few years ago I received a Belkin N1 Vision (F5D8232-4) wireless router from a friend of mine. She had received it as some sort of door prize. The wireless on the router isn't that great, but it was strong enough to cover parts of my house that my previous …

  6. IP Cache Flow - Find Abusive Hosts

    Posted on in Networking

    If you're on a router that does a lot of traffic, finding the source (or destination) of abusive hosts can be problematic. The output from show ip cache flow can be extremely long and finding anything useful can take a very long time. The following IOS regular expressions (regexes?) can …

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