Throughput in a L2TPV3 or GRE Tunnel

[pthomsett]

I want to establish a tunnel accross a 2.5 GB wavestream circuit of a partners network. I am considering L2TPV3 or GRE technologies and they will limit the throughput on there network between my 2 tunnel endpoints to 1Gbps. My question is will I get anywhere near 1Gbps in throughput, I know there will be some header overhead, but I am wondering more, can my 2 endpoints encapsulate at such a high throughput, what platforms will I need to do so. I assume there is quite a load on the router platform to do so...?

[carenas123]

The maximum throught obtained will be upto 512-kilo byte payload. And the Maximum number of IPSec tunnels (on VPN service module [VPNSM]) is 8,000

Maximum number of L2TP tunnels per PPP regeneration session is 40,000 .

[r.vdoever]

To prevent fragmentation from putting too much load on CPUs, lowering the MSS of the hosts to 1460-24=1436 will be important.