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2/20/2012

Cisco IOS supported protocols

Supported IP Protocols in Cisco IOS Software

These IP protocols are supported by Cisco IOS Software:

· 1 – ICMP

· 2 – IGMP

· 3 – GGP

· 4 – IP in IP encapsulation

· 6 – TCP

· 8 – EGP

· 9 – IGRP

· 17 – UDP

· 20 – HMP

· 27 – RDP

· 41 – IPv6 in IPv4 tunneling

· 46 – RSVP

· 47 – GRE

· 50 – ESP

· 51 – AH

· 53 – SWIPE

· 54 – NARP

· 55 – IP mobility

· 63 – any local network

· 77 – Sun ND

· 80 – ISO IP

· 88 – EIGRP

· 89 – OSPF

· 90 – Sprite RPC

· 91 – LARP

· 94 – KA9Q/NOS compatible IP over IP

· 103 – PIM

· 108 – IP compression

· 112 – VRRP

· 113 – PGM

· 115 – L2TP

· 120 – UTI

· 132 – SCTP

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