Thanks to everyone who helped out. This last post did it. On the ASA I ran the following commands Config)#multicast-routing Config)#pim rp-address 192.168.206.3 (ip of my ks) Then I enabled multicast routing on the KS and it worked. I didn't need to do anything on the GM's though.
From: Bartlett Graham A [mailto:[email protected]] Sent: Tuesday, March 09, 2010 10:19 PM To: Michael Davis; Badar Farooq Cc: [email protected] Subject: RE: [OSL | CCIE_Security] GETVPN and multicast through ASA >From my notes with the KS on the inside of the ASA, from memory this worked >and the rekey was performed using multicast. I'm not 100% sure if this is the >correct config, but I know that it worked for me.. On the ASA you need an ACL to allow multicast traffic in. pim multicast-routing pim rp-address address_of_KS on KS ip multicast-routing ip pim sparese-mode ip pim rp-address address_of_KS on GM ip igmp join-group multicast_address ip multicast-routing ________________________________ From: [email protected] [mailto:[email protected]] On Behalf Of Michael Davis Sent: 09 March 2010 11:03 To: Badar Farooq Cc: [email protected] Subject: Re: [OSL | CCIE_Security] GETVPN and multicast through ASA Hi - Yes it took a while. It has stopped working. When I issued the "clear crypto isakmp" command it stopped working. So now I can try to work out how to get the multicast through the ASA. From: Badar Farooq [mailto:[email protected]] Sent: Tuesday, March 09, 2010 9:56 PM To: Michael Davis Cc: [email protected] Subject: Re: [OSL | CCIE_Security] GETVPN and multicast through ASA Well, the registration would work fine. Reduce the rekey restransmit time to minimum and run debugs on the GMs to see if you are receiving rekeys once they are retransmitted. ( alternatively, you can change the ACL to force a rekey). But remember, clearing GDOI on GMs or any change on GMs will cause re-registration which will work fine. (Its unicast and in opposite direction) With ASA in between multicast rekey should NOT work. But lets first make sure its not working and then we can implement the workarounds later. On Tue, Mar 9, 2010 at 1:49 PM, Michael Davis <[email protected]<mailto:[email protected]>> wrote: Hi Everyone - I configured a GETVPN using 3 1760's running 12.4 (15)T. I put an ASA 5510 between the KS and the 2 GM's. I set the keying as unicast which worked fine. I changed the keying to multicast and it is still working?? Shouldn't I have to do something on the ASA to pass multicast traffic for GETVPN. I vaguely remember Tyson doing this in the bootcamp to make it work so I am a bit confused. Can anyone please clarify what we need to do if a getvpn using multicast keys traverses an ASA or another router? Thanks Michael _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com<http://www.ipexpert.com> "This e-mail is intended for the recipient only. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely upon this e-mail. If an addressing or transmission error has misdirected this e-mail, please notify the author by replying to this e-mail." "Recipients should note that all e-mail traffic on MOD systems is subject to monitoring and auditing."
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