How to forward GRE protocol to a particular ip on lan

DDSN · Created Nov 6, 2020 06:28:20

Hi mafiosa,
After experimentation, your plan is impossible. The GER tunnel can be established only after a route to the Mikrotik router is configured on the router at the other end of the GRE tunnel, that is, the router with the IP address 4.5.5.5. However, private IP addresses cannot be configured on the public network.

Gustavo.HdezF · Created Nov 4, 2020 21:55:45

Hello User. we are reviewing your question and we will answer you shortly. Thanks.

ariase88 · Created Nov 4, 2020 21:56:00

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We are checking your question and will provide an answer to you shortly

DDSN · Created Nov 5, 2020 05:44:04

Hi mafiosa，
You can refer to the following configuration to configure GRE.
https://support.huawei.com/hedex/hdx.do?docid=EDOC1100007335&id=dc_cfg_gre_0022_2&lang=en
Note:
On the AR1200, you need to set the source IP address of the GRE tunnel to the IP address of WAN GE 0/0/0 and the destination IP address to 192.168.168.2.

mafiosa · Created Nov 5, 2020 11:04:01

@DDSN you didn't get my point. The GRE tunnel other end point is 4.5.5.5 (example) on the internet. AR 1200 is doing NAT. Mikrotik is on lan interface. One endpoint of gre is 4.5.5.5 and the other is the mikrotik. The question is how to forward all gre packets to the mikrotik connected on lan.

DDSN · Created Nov 6, 2020 06:28:20

Hi mafiosa,
After experimentation, your plan is impossible. The GER tunnel can be established only after a route to the Mikrotik router is configured on the router at the other end of the GRE tunnel, that is, the router with the IP address 4.5.5.5. However, private IP addresses cannot be configured on the public network.

How to forward GRE protocol to a particular ip on lan

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How to forward GRE protocol to a particular ip on lan

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