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JunosE 11.3.x IP, IPv6, and IGP Configuration Guide
RIP Messages
Platform Considerations
References
202
an unreachable network. This small range prevents RIP from being useful for large
networks.
RIP exchanges routing information via User Datagram Protocol (UDP) data packets.
Each RIP router sends and receives datagrams on UDP port number 520, the RIP version
1/RIP version 2 port. All communications intended for another router's RIP process area
are sent from the RIP port.
Every RIP message contains a RIP header that consists of a command and a version
number. The router supports RIP version 1 (RIPv1) and RIP version 2 (RIPv2) extensions.
RIP employs the following message types:
Request—A request for the responding router to send all or part of its routing table.
Response—A message containing all or part of the sender's routing table. This message
is sent in response to a request or is an unsolicited routing update generated by the
sender.
The RIP request and response messages also contain a list of route entries. Each route
entry contains the following:
Address Entry Identifier—The type of address
Destination IP address—The destination address of the message
Cost to reach the destination—A value between 1 and 15, which specifies the current
metric for reaching the destination
For information about modules that support RIP on the ERX7xx models, ERX14xx models,
and the ERX310 Broadband Services Router:
See ERX Module Guide, Table 1, Module Combinations for detailed module specifications.
See ERX Module Guide, Appendix A, Module Protocol Support for information about the
modules that support RIP.
For information about modules that support RIP on the E120 and E320 Broadband
Services Routers:
See E120 and E320 Module Guide, Table 1, Modules and IOAs for detailed module
specifications.
See E120 and E320 Module Guide, Appendix A, IOA Protocol Support for information
about the modules that support RIP.
For more information about RIP, consult the following resources:
Copyright © 2010, Juniper Networks, Inc.
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