--> Many Security vendors offers a feature called source Mac address based routing
--> Source-Based MAC Routing allows to perform routing based upon the source MAC address rather than destination IP address.
--> It works by storing the MAC address that the SYN packet came from in the connection table, then when sending return traffic for that flow, to send it to the MAC address that the SYN came from.
--> This overrides the destination-based routing table and helps prevent asymmetrical routing.
--> Many vendors use a different name for this feature:
F5 Networks -----------Auto Last Hop (ALH)
Palo Alto----------------Symmetric Return
BlueCoat-----------------Return-To-Sender (RTS)
NetScaler-----------------MAC-based forwarding (MBF)
--> Source-Based MAC Routing allows to perform routing based upon the source MAC address rather than destination IP address.
--> It works by storing the MAC address that the SYN packet came from in the connection table, then when sending return traffic for that flow, to send it to the MAC address that the SYN came from.
--> This overrides the destination-based routing table and helps prevent asymmetrical routing.
--> Many vendors use a different name for this feature:
F5 Networks -----------Auto Last Hop (ALH)
Palo Alto----------------Symmetric Return
BlueCoat-----------------Return-To-Sender (RTS)
NetScaler-----------------MAC-based forwarding (MBF)