User's Manual

User Manual
29
The IPsec profile does not need to be configured when establish an IPsec VPN,
but needs to be configured when establish a DM VPN.
5.2.2 GRE
Generic Routing Encapsulation (GRE) protocol can be used to encapsulate
datagrams of some network layer protocols, so that these encapsulated
datagrams can be transmitted on the IPv4 network.
Scenario: GRE is enabled for ER800_A and ER800_B through the public network.
Method for enabling GRE for transmission channels of ER800_A and
ER800_B:
1. Click "VPN >> GRE" and then click Add.
2. Set "Index" as required. Select "Point to Point" or "Subnet" for "Network
Type". Set "Local Virtual IP" and "Peer Virtual IP", ensuring that they are on the
same network segment. Enter the source and peer IP addresses or interfaces
and the key. Click Apply & Save.