IPv6 Multicast: Static Multicast Routing for IPv6
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IPv6 Multicast: Static Multicast Routing for IPv6Last Updated: July 17, 2012
IPv6 static multicast routes, or mroutes, share the same database as IPv6 static routes and are implemented by extending static route support for reverse path forwarding (RPF) checks. Finding Feature InformationYour software release may not support all the features documented in this module. For the latest caveats and feature information, see Bug Search Tool and 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 module. 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 IPv6 Static MroutesIPv6 static mroutes behave much in the same way as IPv4 static mroutes used to influence the RPF check. IPv6 static mroutes share the same database as IPv6 static routes and are implemented by extending static route support for RPF checks. Static mroutes support equal-cost multipath mroutes, and they also support unicast-only static routes. How to Configure IPv6 Static Multicast RoutesConfiguring Static MroutesStatic multicast routes (mroutes) in IPv6 can be implemented as an extension of IPv6 static routes. You can configure your device to use a static route for unicast routing only, to use a static multicast route for multicast RPF selection only, or to use a static route for both unicast routing and multicast RPF selection. DETAILED STEPS Configuration Examples for IPv6 Static Multicast RoutesExample: Configuring Static MroutesUsing the show ipv6 mroute command allows you to verify that multicast IPv6 data is flowing: Device# show ipv6 mroute ff07::1
Multicast Routing Table
Flags:D - Dense, S - Sparse, B - Bidir Group, s - SSM Group,
C - Connected, L - Local, I - Received Source Specific Host Report,
P - Pruned, R - RP-bit set, F - Register flag, T - SPT-bit set,
J - Join SPT
Timers:Uptime/Expires
Interface state:Interface, State
(*, FF07::1), 00:04:45/00:02:47, RP 2001:DB8:6::6, flags:S
Incoming interface:Tunnel5
RPF nbr:6:6:6::6
Outgoing interface list:
POS4/0, Forward, 00:04:45/00:02:47
(2001:DB8:999::99, FF07::1), 00:02:06/00:01:23, flags:SFT
Incoming interface:POS1/0
RPF nbr:2001:DB8:999::99
Outgoing interface list:
POS4/0, Forward, 00:02:06/00:03:27
The following sample output displays information from the show ipv6 mroute active command: Device# show ipv6 mroute active
Active IPv6 Multicast Sources - sending >= 4 kbps
Group:FF05::1
Source:2001:DB8:1:1:1
Rate:11 pps/8 kbps(1sec), 8 kbps(last 8 sec)
The following example displays RPF information for the unicast host with the IPv6 address of 2001:DB8:1:1:2: Device# show ipv6 rpf 2001:DB8:1:1:2
RPF information for 2001:DB8:1:1:2
RPF interface:Ethernet3/2
RPF neighbor:FE80::40:1:3
RPF route/mask:20::/64
RPF type:Unicast
RPF recursion count:0
Metric preference:110
Metric:30
Additional ReferencesRelated DocumentsMIBsTechnical Assistance
Feature Information for IPv6 Multicast: Static Multicast Routing for IPv6The 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.
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. © 2012 Cisco Systems, Inc. All rights reserved.
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