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aristanetworks / avd

Arista Validated Designs
https://avd.arista.com
Apache License 2.0
293 stars 211 forks source link

"ip address virtual" vs "ip virtual-router address" option for eVPN #67

Closed bingbucks closed 4 years ago

bingbucks commented 4 years ago

Recall that there are no GARPs for interfaces with "ip address virtual", which could be somewhat problematic for L2 infrastructure that is southbound of the VTEPs.

Of course, removing "ip address virtual" results in chewing up more IP addresses in the entire eVPN fabric.

carlbuchmann commented 4 years ago

Comparison of commands and behavior: https://eos.arista.com/a-comparison-of-virtual-ip-commands/

carlbuchmann commented 4 years ago

resolved with PR #132

network-ardent commented 1 year ago

From the article in Arista, there seems to be nothing special about it but saving the IP If you have any other restrictions, please let me know

(We are already aware of the behavior of not issuing GARP)

ClausHolbechArista commented 1 year ago

There are also different behaviors for traffic sourced or forwarded by the switch. The article should cover all the differences. For AVD it is much simpler to use ip address virtual since you don't have to provision unique IPs per TOR under the SVI definition. Also notice if you need to have some kind of L3 peering, you will need ip virtual-router.