ā04-07-2016 02:39 AM - edited ā03-05-2019 03:44 AM
Hi Folks
Seek to know what purpose do the outer switches(Layer two switches between the Internet Router and Firewall) serve as depicted in the
Know that it acts as a Layer 2 Boundary but what functionality/design aspect would one lose/suffer if the firewall and the router are connected back to back
Regards
Sumesh
ā04-07-2016 04:12 AM
Hi,
If you read down that documents you find the following under Routing and Switching section:
"As illustrated in Figure 7, the outer switches implement a single Layer 2 segment or VLAN that provides connectivity between the firewalls and the edge routers. This VLAN is the firewall's outside segment. As firewall failover requires all firewall interfaces to be Layer 2 adjacent, the outside VLAN needs to be carried by both outer switches."
Highlighted section would be one of the reasons you have the outer switches.
Thanks
John
ā04-07-2016 06:54 AM
Not sure about that John coz there are designs/implementations in which firewall can be connected back to back with the edge routers.If I am not wrong I can still have all the interfaces as layer 2 adjacent without necessarily having outer switches
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