Networking Brain Dump
The Networking Brain Dump, Part 6: IP Services, Multicast, Tunnels & MPLS
Part 6 of 6. This is the last one. It covers NTP, first-hop redundancy, multicast from IGMP through PIM, tunneling protocols, and MPLS including VPNs and DMVPN. IP Services NTP NTP (Network Time Protocol) synchronizes clocks across network devices. It operates over UDP on port 123. NTP gets its time