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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Q: Sizes of Existing and Planned Fully Meshed IPSEC VPN (Tunnel Mode)
> I assume "fully meshed" means each node connects to each other > node, so each node has 109 tunnels (110 total). > I also assume "Cisco IPSEC based VPN" means IPsec (rfc 2401/2411/etc.) > and not MPLS-only. > > In that case, 120 is not 'large' according to the vendor > community -- 'large' starts at around 5000 tunnels. I suspect that, > in nature (or in the land of the Nanogians) that under 1000 is > more like a 'large' one. Hardly. Until the very latest T-code releases, there was a hard limit of 200 on the number of open SAs any IPSec router could have open. 200 routers talking fully meshed is impossible, nevermind 5000. If communications are opened in 2 directions, 100 routers with a single access-list entry identifying the other site was the max. -- Joe Rhett Chief Geek [email protected] ISite Services, Inc. |