November 22, 2008 12:56 PM
Posted by: Yasir Irfan
802.1 Q,
CCNP,
Cisco,
Cisco 2950,
Cisco 2960,
Cisco 3560,
Cisco 3560-E,
Cisco 3750-E,
Cisco 6500,
Cisco 6500 Series Catalyst Switch,
Cisco 6503,
Cisco Catalyst 6503-E Switch,
Cisco Catalyst 6506-E Switch,
Cisco Catalyst 6509-E Switch,
Cisco Catalyst 6509-V-E Switch,
Cisco Catalyst 6513 Switch,
Cisco IOS,
Cisco Learning,
Cisco Systems,
Cisco Tips,
Configuring DHCP Snooping,
DHCP,
DHCP Snooping,
HSRP,
IOS commands,
Networking,
Routing and Switching,
Server Security,
Switches,
Switching,
Trunk Ports So here we go, with the configuration of DHCP snooping on a Cisco Switch. This feature protects the network by allowing the Cisco Switches to accept DHCP response message only from the authorized servers connected to the trusted interfaces in a Cisco...
August 30, 2008 5:16 AM
Posted by: Yasir Irfan
Cisco,
Cisco 3560,
Cisco 3560-E,
Cisco 3750-E,
Cisco Learning,
Cisco Tips,
IOS commands,
Layer 1 issues,
Network Troubleshooting,
SwitchesHere is a simple and cool tool for solving layer 1 UTP cable issues in a Cisco Catalyst Switches, the command used for this function is "test cable-diagnostics tdr interface"
Here is the example
MBGF-DAC-3560-AS01#test cable-diagnostics tdr interface gigabitEthernet 0/1
TDR test started on...
August 23, 2008 6:04 AM
Posted by: Yasir Irfan
Cisco,
Cisco 2950,
Cisco 3560,
Cisco 3560-E,
Cisco 3750-E,
Cisco Network Assistant,
Cisco Tips,
Network Inventory,
Network Troubleshooting,
Networking,
Routers,
SNMP,
SwitchesCisco Network Assistant (CNA) is a PC-based graphical network management application which is free tool included when a new Cisco Switch is...
August 17, 2008 5:55 AM
Posted by: Yasir Irfan
Cisco,
Cisco 2950,
Cisco 3560,
Cisco 3560-E,
Cisco 3750-E,
Cisco 6500,
Err-disable,
Layer 1 issues,
Link-Flap,
Switches
Link flap means that the interface continually goes up and down in a Cisco Switch. The interface is put into the errdisabled state if it flaps more than five times in 10 seconds. The common cause of link flap is a Layer 1 issue such as a bad cable,...
August 2, 2008 6:43 AM
Posted by: Yasir Irfan
ASA/PIX,
Cisco,
Cisco 2950,
Cisco 3560,
Cisco 3560-E,
Cisco 3745,
Cisco 3750-E,
Cisco 525,
Cisco 6500,
Cisco Tips,
IOS commands,
PIX 525,
Router Troubleshooting,
Routers,
Show commands,
Switches
Some of the widely used commands in Cisco routers are just simple unavoidable, among the most commonly used commands in a Cisco Routers are “show” commands. These commands are essential to Network Administrators. Here is a list of those commands. I...
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