Today I had a chat about MTU with a customer. MTU is my second favorite topic for tech talks in front of the coffee machine, STP is still the first because there are so many misconceptions about it. Even QoS is funny, people has many creative ideas and expectations from it. Let's talk about MTU. Everything begun today …

Quick note about PPPoE address assignment. IPCP CLIENT interface Dialer1 ip address negotiated encapsulation ppp dialer pool 1 dialer idle-timeout 0 dialer persistent end SERVER ip dhcp-server 10.0.12.1 interface Virtual-Template10 ip address 10.0.32.2 255.255.255.0 peer default ip address dhcp end DHCP CLIENT …