The following commands will enable you to configure and restrict CLI access to using the SSH protocol only, on most Cisco Catalyst IOS routers or switches. Note: this is not to failover to local authentication when you lose access to your TACACs server, but purely to enable local SSH access, so this does not even… Read More Configuring local SSH authentication on Cisco IOS
Recently I had to troubleshoot an etherchannel of 2x fibre uplinks between a Core switch and an access switch which had gone down. The status of the etherchannel interfaces from the Core was showing as follows: Group Port-channel Protocol Ports ——+————-+———–+———————————————– 11 Po11(SD) LACP Gi1/0/3(s)… Read More Etherchannel suspended status
A routing protocol is the communication form used to share network information between connected routers. Dynamic routing protocols in contrast to static routing have several advantages, here are a few of them: Although there are advantages to dynamic routing, when designing a network and the appropriate routing solution, the simplest is always the best. Sometimes… Read More Dynamic Routing Protocols
IPSec – IPSec stands for Internet Protocol Security and is a protocol suite which enables authentication and encryption of IP packets. IPSec can be used to establish mutual authentication between 2 peers at the beginning of a network communication session and uses cryptographic algorithms such as 3DES or AES-256 to encrypt the network traffic. There… Read More IPSec VPN Tunnel Modes
Not The Network 