Category Archives capture

When thinking about tunnelling, which is encapsulating one protocol with another and then transporting that encapsulated packet across a network, you'll soon see yourself seeing terminology such as Transport, Carrier and Passenger protocols. So what is what? The passenger protocol is the protocol you want to carry over a network that does not understand it (or you do not want the network…

I came across the OSPF subcommand 'Sham-link' when studying for my CCNP Route exam, and was curious as to what it was. The OSPF sham link provides a logical link between two VRFs. It creates a link that makes the MPLS PE’s participating in the sham link appear as a point to point link within OSPF. These links are able…