Configuring IRDP
The ICMP Router Discovery Protocol (IRDP) allows IPv4 hosts to locate routers that provide IPv4 connectivity to other (nonlocal) IP networks. For a complete description of the IPv4 addressing commands in this module, refer to the Cisco IOS IP Application Services Command Reference. To locate documentation of other commands that appear in this module, use the command reference master index, or search online.
This module explains the concepts related to IRDP and describes how to configure IRDP in a network.
Finding Feature Information
Your software release may not support all the features documented in this module. For the latest feature information and caveats, see the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the Feature Information Table at the end of this document.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Information About IRDP
IRDP Overview
ICMP Router Discovery Protocol (IRDP) allows hosts to locate routers that can be used as a gateway to reach IP-based devices on other networks. When the device running IRDP operates as a router, router discovery packets are generated. When the device running IRDP operates as a host, router discovery packets are received. The Cisco IRDP implementation fully conforms to the router discovery protocol outlined in RFC 1256 ( http://www.ietf.org/rfc/rfc1256.txt ).
How to Configure IRDP
Configuring IRDP
DETAILED STEPS
Configuration Examples for IRDP
Example: Configuring IRDP
The following example shows how to configure IRDP on a router:
Router(config)# interface fastethernet 0/1 Router(config-if)# no shutdown Router(config-if)# ip address 172.16.10.1 255.255.255.0 Router(config-if)# ip irdp Router(config-if)# ip irdp multicast Router(config-if)# ip irdp holdtime 120 Router(config-if)# ip irdp maxadvertinterval 60 Router(config-if)# ip irdp minadvertinterval 10 Router(config-if)# ip irdp preference 900 Router(config-if)# ip irdp address 192.168.10.2 90
Additional References
Related Documents
| Related Topic |
Document Title |
|---|---|
| Cisco IOS commands |
|
| IP application services commands |
Standards
| Standard |
Title |
|---|---|
| No new or modified standards are supported, and support for existing standards has not been modified |
-- |
MIBs
| MIB |
MIBs Link |
|---|---|
| No new or modified MIBs are supported, and support for existing MIBs has not been modified |
-- |
RFCs
| RFC |
Title |
|---|---|
| RFC 1256 |
ICMP Router Discovery Messages: http://www.ietf.org/rfc/rfc1256.txt |
Technical Assistance
| Description |
Link |
|---|---|
| The Cisco Support and Documentation website provides extensive online resources, including documentation and tools for troubleshooting and resolving technical issues with Cisco products and technologies. To receive security and technical information about your products, you can subscribe to various services, such as the Product Alert Tool (accessed from Field Notices), the Cisco Technical Services Newsletter, and Really Simple Syndication (RSS) Feeds. Access to most tools on the Cisco Support and Documentation website requires a Cisco.com user ID and password. |
Feature Information for IRDP
The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
| Table 1 | Feature Information for IRDP |
| Feature Name |
Releases |
Feature Information |
|---|---|---|
| ICMP Router Discovery Protocol |
10.0 12.2(33)SRA |
The ICMP Router Discovery Protocol (IRDP) allows IPv4 hosts to locate routers that provide IPv4 connectivity to other (non-local) IP networks. The following command was introduced or modified: ip irdp. |
Cisco and the Cisco logo are trademarks or registered trademarks of Cisco and/or its affiliates in the U.S. and other countries. To view a list of Cisco trademarks, go to this URL: www.cisco.com/go/trademarks. Third-party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (1110R)
Any Internet Protocol (IP) addresses and phone numbers used in this document are not intended to be actual addresses and phone numbers. Any examples, command display output, network topology diagrams, and other figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses or phone numbers in illustrative content is unintentional and coincidental.
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