Cisco ROUTER-SDM-CD User Manual page 861

Chapter 40 More About....
ICMP Messages
timestamp-request
traceroute
unreachable
IP Services
IP Services Port Number
aahp 51
eigrp 88
esp 50
icmp 1
igmp 2
ip 0
ipinip 4
nos 94
ospf 89
pcp 108
pim 103
OL-4015-12
Port Number Description
13 Request for timestamp to be used for synchronization between
two devices.
30 Message sent in reply to a host that has issued a traceroute
request.
3 Destination unreachable. Packet cannot be delivered for
reasons other than congestion.
Description
Enhanced Interior Gateway Routing Protocol. Advanced version of
IGRP developed by Cisco.
Extended Services Processor.
Internet Control Message Protocol. Network layer protocol that
reports errors and provides other information relevant to IP packet
processing.
Internet Group Management Protocol. Used by IP hosts to report their
multicast group memberships to adjacent multicast routers.
Internet Protocol. Network layer protocol offering connectionless
internetwork service.
IP-in-IP encapsulation.
network operating system. A distributed file system protocol.
Open Shortest Path First. A link-state hierarchical routing algorithm.
Payload Compression Protocol
Protocol-Independent Multicast. PIM is a multicast routing
architecture that allows the addition of multicast IP routing on
existing IP networks.
Cisco Router and Security Device Manager 2.5 User's Guide
Services and Ports
40-11