Cisco 2900 Switch: Create a VLAN
A VLAN (Virtual Local Area Network) makes a single physical switch behave like several separate switches. A host connected to one VLAN cannot communicate through the switch to a host connected to another (although a router can permit communication between VLANs if desired). Here's how to configure a new VLAN on a 2900 switch.
To create a VLAN number 5 called 'engineering' use these commands:
# vlan database
(vlan)# vlan 5 name engineering
(vlan)# exit
#
(vlan)# vlan 5 name engineering
(vlan)# exit
#
The 'vlan database' command is necessary to enter VLAN configuration mode (analagous to entering an interface configuration mode when configuring a router or switch interface). Note that the switch's prompt changes after this command.
Once in the VLAN configuration mode, more than one VLAN may be created using multiple 'vlan id# name vlan-name' commands, one per line. The exit command leaves the VLAN configuration mode.
Also see ...
Cisco 2950 Switch: Create a VLAN
H3The commands for creating a VLAN vary from one switch model to another. VLANs in a 2950 switch are configured in a manner similar to configuring an interface. This configuration is substantially different than a 2900 switch./H3PTo create two VLANs on a 2950 switch, one with id 5 and name '
H3The commands for creating a VLAN vary from one switch model to another. VLANs in a 2950 switch are configured in a manner similar to configuring an interface. This configuration is substantially different than a 2900 switch./H3PTo create two VLANs on a 2950 switch, one with id 5 and name '
Disable or turn off CDP on Cisco switches
H3Cisco Discover Protocol or CDP is a Cisco proprietary protocol that runs on all Cisco products. CDP allows devices to learn about neighboring devices (the ones attached directly to the switch) including information about their platform, IP address, the version of IOS or other OS, VLAN membershi
H3Cisco Discover Protocol or CDP is a Cisco proprietary protocol that runs on all Cisco products. CDP allows devices to learn about neighboring devices (the ones attached directly to the switch) including information about their platform, IP address, the version of IOS or other OS, VLAN membershi
Cisco: Making long commands short with aliases
H3How to configure aliases for frequently used commands./H3PIf you're like you me you hate typing in long commands over and over... and over... and over. br / br /Instead of typing span style="font style: italic"sh ip int br/span all the time wouldn't it be nice to just type span styl
H3How to configure aliases for frequently used commands./H3PIf you're like you me you hate typing in long commands over and over... and over... and over. br / br /Instead of typing span style="font style: italic"sh ip int br/span all the time wouldn't it be nice to just type span styl
Configuring DHCP to work with Cisco Manager
H3This Tech Recipe describes using an external DHCP server, in this case from a Windows Server 2000 or 2003 system, with Cisco Call Manager (CCM). When introducing CCM into environments with an exsiting DHCP infrastructure, problems may occur because Cisco IP phones require additional informatio
H3This Tech Recipe describes using an external DHCP server, in this case from a Windows Server 2000 or 2003 system, with Cisco Call Manager (CCM). When introducing CCM into environments with an exsiting DHCP infrastructure, problems may occur because Cisco IP phones require additional informatio
Optimize Cisco CallManager - Use IP address, not servername
H3In systemserver, the default name for each server is it's hostname. These names will be passed along to the phones, requiring a DNS lookup before a phone can contact CallManager./H3PTo prevent the phones from needing to contact DNS, change each server's name in systemserver to its IP addr
H3In systemserver, the default name for each server is it's hostname. These names will be passed along to the phones, requiring a DNS lookup before a phone can contact CallManager./H3PTo prevent the phones from needing to contact DNS, change each server's name in systemserver to its IP addr