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In this section:
As part of
There is a minor difference between
In both cases, the L2 tables of attached switches are updated; however in the case of SBC SWe, the routers' ARP tables must be updated as well.
|ARP cache entries on the router are cleared periodically, typically every 10-20 minutes. As a result, the ARP table on the router gets updated. At this point, the active CE starts receiving traffic.|
If a router in an
For example, the received Gratuitous ARP reply on a Juniper SRX device does not update the ARP cache by default. You must configure the router to enable ARP table update for switch-over to work properly.
A knowledge base article on how to enable the updating of the ARP cache for received gratuitous ARP replies is located here: