#High #Performance #GRE capabilities of #HP #5800 Switch

The 5800 series of switches can do high performance GRE.  You can use up to (3) 1gb or 10gb interfaces and creating a service port, bind them together to deliver higher performance:

Create a Service Loopback Group

[5800]service-loopback group 1 type tunnel

Assign GigabitEthernet 1/0/47 and 1/0/48 to the Service Loopback Group.  (Yes, you cannot use those ports for anything after that!  Sorry)

[5800]interface GigabitEthernet1/0/47

[5800-GigabitEthernet1/0/47]stp disable

[5800-GigabitEthernet1/0/47]port service-loopback group 1

[5800]interface GigabitEthernet1/0/48

[5800-GigabitEthernet1/0/48]stp disable

[5800-GigabitEthernet1/0/48]port service-loopback group 1

Create the GRE Tunnel Interface and assign the Service Loopback Group to it.

[5800]interface tunnel 0

[5800-Tunnel0]ip address 192.168.1.1 24

[5800-Tunnel0]source 1.1.1.1

[5800-Tunnel0]destination 2.2.2.2

[5800-Tunnel0]tunnel-protocol gre

[5800-Tunnel0]service-loopback-group 1

This configuration should allow up you to go over 1Gbps in performance on a GRE tunnel on the 5800.


One good point to make... you are NOT actually using the ports you are assigning to the service group.  You are assigning their ASIC resources.  The ports themselves are not usable as ports any longer. The GRE tunnel would take whatever route out of other interfaces to get to its destination.