09-17-2008 03:45 AM
Trying to get Multicast working on MPLS test LAB. The LAB only has 4 PE's built in a ring topology. See Below
AS4-AS3
| |
AS1-AS2
I have a test VRF configured on AS1 and AS3, working fine. When I enable multicast the MDT tunnels are not built.
If I change all the PE's to be in the same BGP AS, the tunnels are built.
Am I missing something here.
Thanks in Advance.
09-17-2008 04:53 AM
Derek,
- What option do you use? Option 10a (back to back vrf), option 10b (ebgp VPNv4) or option 10c (ipv4 + label).
- Do you use ASM or SSM in the P-domain?
Could you pease post the configs.
Regards
09-17-2008 05:07 AM
09-18-2008 04:30 AM
Derek,
I just looked at the configurations you provided and noticed that the two routers are in the same AS. Assuming you simply change the AS on one of them, it would make it an option 10b scenario, in which case you will need to configure and activate the MDT AF between the two AS.
Regards
09-18-2008 04:32 AM
How do you do that, if you dont mind me asking.
D
09-18-2008 04:35 AM
Hi Hitter
Only available options I have for AF's are below.
multicast Address Family modifier
unicast Address Family modifier
vrf Specify parameters for a VPN Routing/Forwarding instance
Do I need to update IOS.
D
09-18-2008 04:44 AM
Hi Derek,
You need to upgrade to an IOS that does support MDT AF or to use MSDP between the ASes.
r1(config-router)#address-family ipv4 ?
mdt Address Family modifier
multicast Address Family modifier
tunnel Address Family modifier
unicast Address Family modifier
vrf Specify parameters for a VPN Routing/Forwarding instance
Configuring MDT AF would help if you want to use SSM between the two ASes.
You could also use ASM by running MSDP between the two routers and configuring them both as RPs.
Regards
09-18-2008 04:49 AM
Would you happen to know where I can get a sample configuration for ASM.
D
09-18-2008 04:56 AM
Certainly. Here's a good document from CCO:
Interdomain Multicast Solutions Using MSDP
http://www.cisco.com/en/US/docs/ios/solutions_docs/ip_multicast/Phase_1/mcstmsdp.html
Let me know if you have any questions
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