We have a Contivity/Nortel 1010 VPN router. We have set up VPNs for several remote user and can connect and authenitcate fine. Problem comes when we try to access large files or run IP sets at remote sites. Large files time out and VoIP sets get choppy (with no network traffic at the endpoints).
I noticed that we can only pass a 1372 kb packet (without fragmenting) with PPTP and we can only pass a 1382 kb packet (without fragmenting) with IPsec (Contivity client software). Unless I am missing something, I would expect this to be 1472.
Any thoughts? MTU issue?
TIA
-Steve