CEF, FIB,TCP, ICMP – review

CEF optimizes route processing. Improves performance.

Fast switching and route caching  FIB table next hop IP info

Review

Unicast 0.0.0.0 – 223.255.255.255

Multicast 224.0.0.0 – 239.255.255.255

Out of Order Packets.

TCP has preventative measures like sequencing and re-transmission.

Asymmetrical Routing may have issues if mtu is different and if it is not identical.

ICMP unreachable – generated by a router to inform source host that it receives packet that destination is unreachable.

ICMP redirects – generated by a router to inform source host that it should send packets to another router to improve performance

TCP Latency – time delay required for info to travel accross network

Windowing amount of unacknowledged data that can be transmitted.

 

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