Network Protocol Overhead
·1 min read
Here are some packet overhead numbers for a few popular protocols to help with doing bandwidth requirement calculations. This may be another add-as-we-go post, so please comment with additions or …
Gre
Stubby Post - A Story on VPN Hardware Acceleration
·2 min read
We use a hosted application that requires IPSec tunnels to the provider from different properties across the country. The ones in the lower 48 perform adequately, but the new one in Alaska is …
QoS Pre-classify and Class-map Order
·4 min read
I’m still studying for the ONT test, so I did some labs tonight. One of them was to demonstrate the qos pre-classify command for tunnel interfaces. When you have a packet sent over a GRE tunnel, the …
GRE Tunnels and Encryption
·1 min read
GRE tunnels rock. They are interfaces on a router that are used to “connect” to another router somewhere on your LAN, your WAN, the Internet, wherever. The most popular use for them is for …