September 6, 2008 10:40 AM
Posted by: Yasir Irfan
Cisco,
Cisco 2950,
Cisco 3745,
Cisco 6500,
Cisco Tips,
IOS commands,
Switches,
Telnet
Imagine if you are accesing the remote router and need to figure out the serial number for a router or the Circuit IDs of the serial interface, then you may start looking your docmented data or call the remote technician to help you out in figuring these details. The best and easy way to get...
September 1, 2008 9:42 AM
Posted by: Yasir Irfan
ARP,
CCNA,
Certifications,
Cisco,
Cisco Learning,
Cisco Tips,
DHCP,
DNS,
Network Layer Utilities,
Networking,
OSI Layer 3,
PingI was just thinking about the most commonly used Network Layer utilities in day to day business. Here are they which are useful to guys who are aspiring for their CCNA.
1) Address Resolution Protocol (ARP)
2) Domain Name Systems (DNS)
3) Dynamic Host Configuration Protocol (DHCP)
4)...
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 20, 2008 6:22 AM
Posted by: Yasir Irfan
Cisco,
Cisco 2950,
Cisco 3745,
Cisco 6500,
IOS commands,
Router Troubleshooting,
Service timestamp,
Switches,
Syslog
Logging is a quite essential part of a secure network configuration. Logging not only helps the Network Administrators to identify the issue while troubleshooting, also enables them to react to intrusion attempts or Denial-of –Service attacks....
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 9, 2008 6:35 AM
Posted by: Yasir Irfan
CCDA,
CCIE,
CCNA,
CCNA Security,
CCNA Voice,
CCNA Wireless,
CCNP,
Certifications,
Cisco,
Cisco Learning,
Cisco Tips,
PearsonNow there is a good news for networking professionals who are aspiring for Cisco Certifications. You can retake the exams for free under Cisco “Come Back” program.
Cisco and Pearson VUE have partnered to give networking professionals the opportunity to re-invest in...
August 5, 2008 6:52 AM
Posted by: Yasir Irfan
Cisco,
Cisco 3560,
Cisco Tips,
IOS commands,
Networking,
Router Troubleshooting,
Routers,
Show commands,
SwitchesIn my previous post I tried to cover some of the show commands which are...
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...
