I have a primary site and a secondary site connected through a firewall-firewall tunnel. The firewalls are Symantec 5420 series. The primary site has a 6509-E. I'm beginning to work on IPV6 Dualstack and want to be able to tunnel IPV6 over the existing firewalls. The secondary site needs a Cisco switch. Since the site only has 4 servers and no workstations, what kind of Cisco switch is appropriate to use at secondary site for the IPV6 tunnel? The sites are connected via T1.