Names the VPN Community this site-to-site tunnel belongs to, the group of gateways sharing a common VPN policy and encryption domain. This matters when a chassis participates in multiple mesh or star VPN communities simultaneously; knowing which community a given tunnel belongs to tells the admin which policy and topology rules govern it, useful when a tunnel's behavior seems inconsistent with the main community's expected settings. Example: tunnelCommunity showing a partner-mesh community instead of the expected primary star community for a particular tunnel would explain why that tunnel is behaving under a different routing or encryption policy than sibling tunnels to the same region.