How to clear CLI screen on ASA and IOS?
Problem: How do you clear CLI screen on ASA? Solution: Answer: You CAN’T! In case you came here asking for the clear CLI screen on IOS. Answer: You CAN’T! SecureCRT I wished there was a way to clear the CLI…
Cisco
Cisco IP phone stuck in configuring IP?
Ever had a Cisco IP phone stuck in configuring ip? Suspecting that there is something wrong with the phone? Don’t throw it away yet! Try doing a factory reset on your phone! Unplug the power cable from the phone, and…
Cisco ASA 8.4 IPSec site to site VPN “Routing failed to locate next-hop”
I’m sure the new ASA NAT statements has confused a load of people. I myself is one of them. Today I encountered a problem with setting up a site to site VPN tunnel between two ASA using the 8.4 code….
How to install a multiple domain SSL Certificate (UCC) on Cisco ASA
There are a few reasons why you want to install a multiple domain certificate (UCC certs with multiple SANs) into your ASA. One of the reason is for setting up a VPN cluster, in which case each of your ASA…
How to troubleshoot cabling and layer 1 ethernet issues with Cisco switches
Ever had a Cisco PoE phone or a wifi access point reboot spontaneously? How would you know if there was bad cabling work done? Or more precisely, where was bad patch? How can you troubleshoot cabling problems using a Cisco…
How to force Cisco ASA to sync configuration
Here’s the command to issue on the active unit to force the configurations an a Cisco ASA active/standby cluster to synchronize. write standby
Cisco IOS HSRP Problem – More than one Active router
HSRP is commonly used as a router failover mechanism, where one router in the group is active and all other group members are in standby. A standby router will take over as the active router when connectivity to the active…
Etherchannel / Bonding / Port-channel – Network Redundancy for Servers
Etherchannel, Portchannel, bonding or NIC teaming? Etherchannel, portchannel, bonding, link-aggregation and NIC teaming are all terms to describe the bundling of two or more ports to form one logical Ethernet link. Ether-channel/Port-channel is the term used by Cisco convention and…
How to configure Cisco IOS Remote Access IPSEC VPN
Problem: The Cisco IOS is a very versatile platform. You can use it to setup a remote access VPN solution without the need to deploy a Cisco ASA or any other dedicated solution. Solution: Here’s how to setup a Remote…
Cisco IPSec VPN – IOS site-to-site Virtual Tunnel Interface VTI
Cisco IPSec VPN tunnels on Cisco IOS routers secures endpoints by forming a tunnel and encrypting the traffic within. Setting up these site to site VPNs can be cumbersome and often involves setting up complicated matching crypto maps on both…