I install OpenStack cluster (juno version) with 1 controller node, 1 network node and 43 computing node. The tenant_network_types is gre. Now I want to add more compute nodes, but for the adding compute nodes, running command "ovs-vsctl show" could not see any gre port as the following:

5a1c8f2d-e07f-4f77-9104-7081eb1a03c2
    Bridge br-int
        fail_mode: secure
        Port patch-tun
            Interface patch-tun
                type: patch
                options: {peer=patch-int}
        Port br-int
            Interface br-int
                type: internal
    Bridge br-tun
        fail_mode: secure
        Port br-tun
            Interface br-tun
                type: internal
        Port patch-int
            Interface patch-int
                type: patch
                options: {peer=patch-tun}
    ovs_version: "2.0.2"

Is there anyone knowing the reason? tunnel_id_ranges = 1:1000 I guess the gre network type may limit the number of compute nodes.

For the 43 compute nodes I installed before, running command "ovs-vsctl show" could see gre port as the following:

6d5b011c-e0c5-4095-921c-9716f6e50a55
    Bridge br-int
        fail_mode: secure
        Port "qvo65beeb3b-ac"
            tag: 1
            Interface "qvo65beeb3b-ac"
        Port br-int
            Interface br-int
                type: internal
        Port "qvo6c93d81a-09"
            tag: 1
            Interface "qvo6c93d81a-09"
        Port patch-tun
            Interface patch-tun
                type: patch
                options: {peer=patch-int}
        Port "qvo1c422605-3c"
            tag: 1
            Interface "qvo1c422605-3c"
        Port "qvo4a1a5c40-52"
            tag: 1
            Interface "qvo4a1a5c40-52"
        Port "qvo3095b120-4d"
            tag: 1
            Interface "qvo3095b120-4d"
    Bridge br-tun
        fail_mode: secure
        Port "gre-0a070203"
            Interface "gre-0a070203"
                type: gre
                options: {df_default="true", in_key=flow, local_ip="10.8.2.4", out_key=flow, remote_ip="10.7.2.3"}
        Port "gre-0a080101"
            Interface "gre-0a080101"
                type: gre
                options: {df_default="true", in_key=flow, local_ip="10.8.2.4", out_key=flow, remote_ip="10.8.1.1"}
        Port "gre-0a070201"
            Interface "gre-0a070201"
                type: gre
                options: {df_default="true", in_key=flow, local_ip="10.8.2.4", out_key=flow, remote_ip="10.7.2.1"}
       ............

        Port "gre-0a060202"
            Interface "gre-0a060202"
                type: gre
                options: {df_default="true", in_key=flow, local_ip="10.8.2.4", out_key=flow, remote_ip="10.6.2.2"}
        Port "gre-0a080218"
            Interface "gre-0a080218"
                type: gre
                options: {df_default="true", in_key=flow, local_ip="10.8.2.4", out_key=flow, remote_ip="10.8.2.24"}
        Port "gre-0a060205"
            Interface "gre-0a060205"
                type: gre
                options: {df_default="true", in_key=flow, local_ip="10.8.2.4", out_key=flow, remote_ip="10.6.2.5"}
        Port "gre-0a08020c"
            Interface "gre-0a08020c"
                type: gre
                options: {df_default="true", in_key=flow, local_ip="10.8.2.4", out_key=flow, remote_ip="10.8.2.12"}
        Port "gre-0a080210"
            Interface "gre-0a080210"
                type: gre
                options: {df_default="true", in_key=flow, local_ip="10.8.2.4", out_key=flow, remote_ip="10.8.2.16"}
        Port "gre-0a070204"
            Interface "gre-0a070204"
                type: gre
                options: {df_default="true", in_key=flow, local_ip="10.8.2.4", out_key=flow, remote_ip="10.7.2.4"}
        Port "gre-0a080212"
            Interface "gre-0a080212"
                type: gre
                options: {df_default="true", in_key=flow, local_ip="10.8.2.4", out_key=flow, remote_ip="10.8.2.18"}
        Port "gre-0a060106"
            Interface "gre-0a060106"
                type: gre
                options: {df_default="true", in_key=flow, local_ip="10.8.2.4", out_key=flow, remote_ip="10.6.1.6"}
        Port "gre-0a080203"
            Interface "gre-0a080203"
                type: gre
                options: {df_default="true", in_key=flow, local_ip="10.8.2.4", out_key=flow, remote_ip="10.8.2.3"}
        Port "gre-0a060201"
            Interface "gre-0a060201"
                type: gre
                options: {df_default="true", in_key=flow, local_ip="10.8.2.4", out_key=flow, remote_ip="10.6.2.1"}
        Port patch-int
            Interface patch-int
                type: patch
                options: {peer=patch-tun}
        Port "gre-0a080105"
            Interface "gre-0a080105"
                type: gre ...