Consider the following topology: We have one Customer with two distributed locations (SW1, R1 and SW2, R2) connected over Provider backbone. What we want to create is something like this: If Provider support 802.1q and L2 tunneling we can achieve a nice Etherchannel between our 2 remote locations with direct CDP visibility. Also STP and […]
Lately I’m playing a lot with virtualization features and for this I needed a rapid way to deploy from scratch new instances. First I had the virtual machines converted to templates, but then I had to rebuild from zero the entire ESXi environment and those images were gone. I realized then it was more easier […]
Let’s assume that I have a port open in my Cisco switch for guest users and I would like to keep track of the new mac-addresses that are added or existing mac-addresses that are removed from that port. I have a NMS (Network Management System), capable of receiving SNMP, traps that will send me an […]
Today I wanted to try and see how many IPv4 prefixes can a Cisco 2600 accommodate in BGP table both global and in VRF table. I have lying around a Cisco 2621XM with 64MB of RAM, so I said to stress it a bit like in the old days when it was productive. I did […]
Calin