05-25-2017 08:06 AM - edited 03-05-2019 08:36 AM
Can anyone point me to documentation on setting up a DCI between PfR hub and transit hub. My understanding is this is only for PfR control traffic and since we are not advertising the same prefixes out of both sites. The hub site is configured for it's prefix and the enterprise prefixes and the transit hub is configured only for it's prefixes.
1. I'm trying to determine the size of the connection needed between locations
2. I'm trying to figure out exactly the setup/routing configuration.
Thanks
I have already looked through iwan design guide and pfr solutions docs
http://docwiki.cisco.com/wiki/PfR3:Solutions:IWAN
http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/pfr/configuration/xe-3s/pfr-xe-3s-book.html
http://www.cisco.com/c/dam/en/us/td/docs/solutions/CVD/Apr2017/CVD-IWANDeployment-APR17.pdf
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05-27-2017 01:48 PM
Hello.
If transit site does not advertise (in routing and PFR) prefixes from primary Hub - you are correct - only control-plane will use the DCI.
But from routing perspective - are you sure there will be no traffic between the transit and primary Hubs in case a Hub lost all WAN links?
PS: iWAN 2.2 supports "DCI" over the same DMVPN clouds; 2.1.1 didn't support this and you had to run "dedicated" link.
06-01-2017 03:10 AM
Hello.
Here is a small document to map release version to iWAN - https://supportforums.cisco.com/document/13306101/iwan-2x-versions-and-release-support
Please note, that 2.2 adds some new limitations on design (like DMVPN phase 3 only) and relaxes some old (like multiple tunnel termination per Hub BR).
05-25-2017 09:02 PM
If the primary hub failed your DCI might end up carying all the traffic.
05-27-2017 01:48 PM
Hello.
If transit site does not advertise (in routing and PFR) prefixes from primary Hub - you are correct - only control-plane will use the DCI.
But from routing perspective - are you sure there will be no traffic between the transit and primary Hubs in case a Hub lost all WAN links?
PS: iWAN 2.2 supports "DCI" over the same DMVPN clouds; 2.1.1 didn't support this and you had to run "dedicated" link.
05-30-2017 05:49 AM
That's correct, we are not advertising prefixes from the primary hub (in routing or PfR) on the transit hub. How would I know if I was running PfR 2.1.1 or 2.2?
Thanks
06-01-2017 03:10 AM
Hello.
Here is a small document to map release version to iWAN - https://supportforums.cisco.com/document/13306101/iwan-2x-versions-and-release-support
Please note, that 2.2 adds some new limitations on design (like DMVPN phase 3 only) and relaxes some old (like multiple tunnel termination per Hub BR).
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