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The Multicast Live-Live feature delivers two multicast streams with the same content over diverse paths in the network. This functionality reduces packet loss due to network failures on any one of the paths.
Your 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.
This feature delivers two multicast streams with the same content over diverse paths in the network. This functionality reduces packet loss due to network failures on any one of the paths. The feature uses multitopology IGP technology in order to deliver the two streams over diverse paths.
The Multicast Live-Live feature can be divided into three distinct processes as shown in the figure. The processes are visually separated by vertical lines in the figure.
Perform this task to configure a multicast topology.
1. enable
2. configure terminal
3. ip multicast-routing
4. ip multicast rpf multitopology
5. global-address-family ipv4 multicast
6. topology { base | topology-name }
7. Repeat Step 6 to configure another global topology instance.
8. exit
9. interface type number
10. ip address ip-address mask [secondary [vrf vrf-name]]
11. ip pim sparse-dense-mode
12. ip router isis
13. topology ipv4 [multicast | unicast] { topology-name [disable] | base}
14. exit
15. Repeat Steps 9 through 14 for each interface to be configured.
16. end
Perform this task to enable a multicast topology under IGP.
1. enable
2. configure terminal
3. router isis
4. net net1
5. metric-style wide [transition] [level-1 | level-2 | level-1-2]
6. address-family ipv4 multicast
7. topology topology-name tid number
8. end
9. configure terminal
10. ip multicast topology {multicast | unicast} topology-name tid topology-number
11. Repeat Step 10 to assign an additional multicast identifier to a topology.
12. ip multicast rpf select topology {multicast | unicast} topology-name access-list-number
13. Repeat Step 12 to specify an additional topology for an RPF lookup.
14. ip access-list {standard | extended} {access-list-name | access-list-number }
15. permit protocol {{ source-addr source-wildcard } | object-group object-group-name | any | host { address | name }} {destination-addr destination-wildcard } | object-group object-group-name | any | host {address | name }}
16. Repeat Steps 14 and 15 to enumerate an additional (S,G) mroute entry if required.
17. end
Perform this task to verify the configuration of the Multicast Live-Live feature.
1. enable
2. show ip multicast topology [{multicast | unicast} topology-name]
The following example shows how to configure the Multicast Live-Live feature. In the example, two multicast topologies are enabled under IGP, the multicast topologies are assigned a topology identifier, and each multicast topology identifier is associated with a multicast group that has a specific (S,G) mroute entry.
ip multicast-routing ! Enable multi-topology mode ip multicast rpf multitopology ! Create 2 IPv4 multicast topologies global-address-family ipv4 multicast topology live-A topology live-B interface Gigabitethernet 1/0 ip address 10.1.1.1 255.255.255.0 ip pim sparse-dense-mode ip router isis topology ipv4 multicast live-A interface Gigabitethernet 2/0 ip address 2.2.2.2 255.255.255.0 ip pim sparse-dense-mode ip router isis topology ipv4 multicast live-B router isis net 49.1234.1234.1234.00 metric-style wide address-family ipv4 multicast ! CLIs to enable 2 multicast topologies under IGP topology live-A tid 10 topology live-B tid 20 ! CLIs to assign multicast tid to topology ip multicast topology multicast live-A tid 100 ip multicast topology multicast live-B tid 200 ! CLIs to specify topology for RPF lookup ip multicast rpf select topology multicast live-A 111 ip multicast rpf select topology multicast live-B 122 ! Use IP access-list extended to specify (S, G) ip access-list extended 111 permit ip any 225.1.1.1 0.0.0.0 ip access-list extended 122 permit ip any 239.1.1.1 0.0.0.0
Related Topic |
Document Title |
---|---|
Cisco IOS commands |
|
Overview of the IP multicast technology area |
|
Concepts, tasks, and examples for configuring an IP multicast network using PIM |
|
IP multicast commands: complete command syntax, command mode, defaults, command history, usage guidelines, and examples |
Standard |
Title |
---|---|
No new or modified standards are supported by this feature, and support for existing standards has not been modified by this feature. |
-- |
MIB |
MIBs Link |
---|---|
No new or modified MIBs are supported. |
To locate and download MIBs for selected platforms, Cisco software releases, and feature sets, use Cisco MIB Locator found at the following URL: |
RFC |
Title |
---|---|
No new or modified RFCs are supported, and support for existing standards has not been modified. |
-- |
Description |
Link |
---|---|
The Cisco Support and Documentation website provides online resources to download documentation, software, and tools. Use these resources to install and configure the software and to troubleshoot and resolve technical issues with Cisco products and technologies. Access to most tools on the Cisco Support and Documentation website requires a Cisco.com user ID and password. |
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.
Feature Name |
Releases |
Feature Information |
---|---|---|
Multicast Live-Live |
Cisco IOS XE Release 3.2S 15.2(3)T |
The Multicast Live-Live feature delivers two multicast streams with the same content over diverse paths in the network. This functionality reduces packet loss due to network failures on any one of the paths. The following commands were introduced or modified: debug ip multicast topology, ip multicast rpf select topology, ip multicast topology, show ip multicast topology. |