IP Routing Protocols

KEY INTERNET ROUTING PROTOCOLS

Table 3-2 provides a summary and comparison of several of the key Internet routing protocols explained in the next chapters of the book. The legend below the table should help you while you read it.

Table 3-2. Routing Protocol Comparison Chart

Protocol	Type	Path	I or E	Over	Neigh	Sec	Change	Agg	Asymm
RIP	D-V	Hop	IGP	UDP	No	Yes	D/F	Yes	No
OSPF	L-S	Metric	IGP	IP	Yes	Yes	D/P	Yes	Yes
BGP	D-V/L-S	Policy	EGP	TCP	Yes	Yes	D/P	Yes	Yes
IGRP	L-S	Metric	IGP	IP	No	Yes	D/P	Yes	No
EIGRP	L-S	Metric	IGP	IP	Yes	Yes	D/P	Yes	No
PNNI	L-S	Metric	IGP/EGP	ATM	Yes	No	D/P	Yes	Yes
Legend:
Type	Type of path created: D-V: Distance-vector L-S: Link-state
Path	Path advertising values
I or E	IGP or EGP
Over	Runs over which protocol
Neigh	Neighbor discovery capabilities and hellos
Sec	Is security part of the protocol?
Change