Articles tagged with vlan

  1. Disable Spanning-Tree Per VLAN

    Posted on in Networking

    If you need to disable spanning-tree on a particular VLAN in your Cisco-based network, use the following command:

    Switch(config)# no spanning-tree vlan 13
    

    This will disable spanning-tree on unlucky VLAN 13.

    If you have some good examples of why you might want to disable spanning-tree for a VLAN, please …

  2. SNMP Community String Indexing

    Posted on in Networking

    Surprised? Confused?Today I was browsing through the Cisco NetPro Forums and came across someone that needed to track down which switch port a <acronym title="Media Access Control">MAC</acronym> address had been dynamically learned on.

    I'd seen this sort of thing before in the Bridge MIB, so I assumed it …

  3. Using ACLs to Block NetBIOS Traffic on Cisco Catalyst Switches

    Posted on in Networking

    In a Metro Ethernet network, the possibility exists for a lot of NetBIOS broadcasts if your users are connecting directly to the ring rather than through a firewall. My first assumption was that most users would have a firewall, but this is really only guaranteed in the case of business-class …

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