I was asked to implement this: 2 firewalls HA connect to 2 Internet circuits for redundancy trough switch either catalyst or small business switch SG- 500/300/250. I dont like this not-standard setup and I'd connect firewalls directly to the ISP modem/router BUT ISP modems have only 1 port each , so to make redundancy between HA firewalls we have to use switch...
Firewalls will have ipsec vpn to other 6 sites and ssl vpn for remote users.
I am not sure if the switch cpu and memory capable to process traffic, switch will have to tag and untag vlanid for that traffic for both circuits and I think this can overload cpu/memory on the switch and cause drops. Am i wrong?
What experts think about this?
2 circuits, each CE modem has only 1 port so only 2 ports uplink A&B, AND 2 firewalls each with 2 wan ports C/D & E/F, firewalls in HA mode.
We would like to have C&A, D&B from1st firewall and E&A , F&B from 2nd firewall for redundancy. On the switch ports I'd have access vlan 10 for 1st internet circuit access and vlan 20 for2nd internet circuit access , kind of tunnels to bypass traffic up-down . Only my concern was switch ports capability , if they can handle traffic from firewall to internet and back...