Do S series switches support GRE

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The following models and versions of S series switches excluding the S1700 support GRE VPN:

-Model- -Starting Version -
S5710EI V200R003 (V200R006 and later versions do not support the S5710EI.)
S5700HI V200R003 (V200R006 and later versions do not support the S5700HI.)
S5710HI V200R003 (V200R006 and later versions do not support the S5710HI.)
S5720EI V200R007C00 (V200R007C10 and later versions do not support the S5720EI.)
S5720HI V200R006
S6300EI V200R005 (V200R006 and later versions do not support the S6300EI.)
S6320EI V200R008
S7700 V100R003
S9700 V200
R001
S12704 V200R008
S12708/S12712 V200R005
S9300 V100R002
S9300E V200R002

Modular switches (S7700/S9700/S9300/S12700) have the following limitations:
- SA series cards (excluding the ET1D2X12SSA0 card) do not support the GRE function.
- In V200R005, X1E series cards and the XGE interface connecting ACU2/ET1D2IPS0S00/ET1D2FW00S00/ET1D2FW00S01/ET1D2FW00S02/LE1D2FW00S01 card do not support the GRE function.
- In V200R006 and later versions, if the tunnel interface is configured with the service link function, the tunnel type, source address, and destination address configured on this interface cannot be modified.

Other related questions:
Do S series switches support HGMP?
The following models and versions of S series switches support HGMP: The S5700 and S6700 in V200R002 and later versions do not support HGMP. The S2700 and S3700 in V100R006C05 and later versions do not support HGMP. The S2750 does not support HGMP. The S7700, S9700, and S9300 in V200R002 and later versions do not support HGMP. The S1700 and S12700 do not support HGMP.

Whether S series switches support OSPF
For details on whether S series switches in V200R008 and earlier versions support or do not support OSPF, see the following: �?S7700/S9700/S12700: Support �?S9300: Support �?S6720EI: Support �?S6700EI: Support �?S5720HI: Support �?S5710HI: Support �?S5700HI: Support �?S5720EI: Support �?S5710EI: Support �?S5700EI: Support �?S5720SI/S5720S-SI: Support �?S5700SI: Not support �?S5710LI: Not support �?S5700LI: Not support �?S5700S-LI: Not support �?S3700HI: Support �?S3700EI: Support �?S3700SI: Not support �?S2750EI: Not support �?S2720EI: Not support �?S2700EI: Not support �?S2710SI: Not support �?S2700SI: Not support �?S1720: Not support For details on whether S series switches in V200R008 and earlier versions support or do not support OSPFv3, see the following: �?S7700/S9700/S12700: Support �?S9300: Support �?S6720EI: Support �?S6700EI: Support �?S5720HI: Support �?S5710HI: Support �?S5700HI: Support �?S5720EI: Support �?S5710EI: Support �?S5700EI: Support �?S5720SI/S5720S-SI: Support �?S5700SI: Not support �?S5710LI: Not support �?S5700LI: Not support �?S5700S-LI: Not support �?S3700HI: Support �?S3700EI: Support �?S3700SI: Not support �?S2750EI: Not support �?S2720EI: Not support �?S2700EI: Not support �?S2710SI: Not support �?S2700SI: Not support �?S1720: Not support

GRE configuration on S series switch
Before configuring GRE, ensure that there is a reachable route between two ends of the tunnel. In this example, the source address is 10.1.1.1/24 and the destination address is 10.2.1.1/24 (the source and destination addresses on the remote end are mirrored). The local end's subnet is 192.168.1.0/24, and the remote subnet is 192.168.2.0.The configurations on S series switches, except S1700 are as follows: Local end: [HUAWEI1] interface tunnel 1 //Create a tunnel interface. [HUAWEI1-Tunnel1] tunnel-protocol gre //Configure the GRE tunnel. [HUAWEI1-Tunnel1] ip address 172.16.1.1 255.255.255.0 //Configure IP addresses for the GRE tunnel for routing. [HUAWEI1-Tunnel1] source 10.1.1.1 //Configure the source address for the GRE tunnel. [HUAWEI1-Tunnel1] destination 10.2.1.1 //Configure the destination address for the GRE tunnel. [HUAWEI1-Tunnel1] quit [HUAWEI1] ip route-static 192.168.2.0 255.255.255.0 tunnel 1 //Configure connection between connected subnets through the GRE tunnel. Remote device: [HUAWEI2] interface tunnel 1 //Create a tunnel interface. [HUAWEI2-Tunnel1] tunnel-protocol gre //Configure the GRE tunnel. [HUAWEI2-Tunnel1] ip address 172.16.1.1 255.255.255.0 //Configure IP addresses for the GRE tunnel for routing. [HUAWEI2-Tunnel1] source 10.2.1.1 //Configure the source address for the GRE tunnel. [HUAWEI2-Tunnel1] destination 10.1.1.1 //Configure the destination address for the GRE tunnel. [HUAWEI2-Tunnel1] quit [HUAWEI2] ip route-static 192.168.1.0 255.255.255.0 tunnel 1 //Configure connection between connected subnets through the GRE tunnel.

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