--- title: "network inspect" description: "The network inspect command description and usage" keywords: "network, inspect, user-defined" --- # network inspect ```markdown Usage: docker network inspect [OPTIONS] NETWORK [NETWORK...] Display detailed information on one or more networks Options: -f, --format string Format output using a custom template: 'json': Print in JSON format 'TEMPLATE': Print output using the given Go template. Refer to https://docs.docker.com/go/formatting/ for more information about formatting output with templates -v, --verbose Verbose output for diagnostics --help Print usage ``` ## Description Returns information about one or more networks. By default, this command renders all results in a JSON object. ## Examples ## Inspect the `bridge` network Connect two containers to the default `bridge` network: ```console $ sudo docker run -itd --name=container1 busybox f2870c98fd504370fb86e59f32cd0753b1ac9b69b7d80566ffc7192a82b3ed27 $ sudo docker run -itd --name=container2 busybox bda12f8922785d1f160be70736f26c1e331ab8aaf8ed8d56728508f2e2fd4727 ``` The `network inspect` command shows the containers, by id, in its results. For networks backed by multi-host network driver, such as Overlay, this command also shows the container endpoints in other hosts in the cluster. These endpoints are represented as "ep-{endpoint-id}" in the output. However, for swarm mode networks, only the endpoints that are local to the node are shown. You can specify an alternate format to execute a given template for each result. Go's [text/template](https://golang.org/pkg/text/template/) package describes all the details of the format. ```console $ sudo docker network inspect bridge ``` The output is in JSON format, for example: ```json [ { "Name": "bridge", "Id": "b2b1a2cba717161d984383fd68218cf70bbbd17d328496885f7c921333228b0f", "Created": "2016-10-19T04:33:30.360899459Z", "Scope": "local", "Driver": "bridge", "IPAM": { "Driver": "default", "Config": [ { "Subnet": "172.17.42.1/16", "Gateway": "172.17.42.1" } ] }, "Internal": false, "Containers": { "bda12f8922785d1f160be70736f26c1e331ab8aaf8ed8d56728508f2e2fd4727": { "Name": "container2", "EndpointID": "0aebb8fcd2b282abe1365979536f21ee4ceaf3ed56177c628eae9f706e00e019", "MacAddress": "02:42:ac:11:00:02", "IPv4Address": "172.17.0.2/16", "IPv6Address": "" }, "f2870c98fd504370fb86e59f32cd0753b1ac9b69b7d80566ffc7192a82b3ed27": { "Name": "container1", "EndpointID": "a00676d9c91a96bbe5bcfb34f705387a33d7cc365bac1a29e4e9728df92d10ad", "MacAddress": "02:42:ac:11:00:01", "IPv4Address": "172.17.0.1/16", "IPv6Address": "" } }, "Options": { "com.docker.network.bridge.default_bridge": "true", "com.docker.network.bridge.enable_icc": "true", "com.docker.network.bridge.enable_ip_masquerade": "true", "com.docker.network.bridge.host_binding_ipv4": "0.0.0.0", "com.docker.network.bridge.name": "docker0", "com.docker.network.driver.mtu": "1500" }, "Labels": {} } ] ``` ### Inspect a user-defined network Create and inspect a user-defined network: ```console $ docker network create simple-network 69568e6336d8c96bbf57869030919f7c69524f71183b44d80948bd3927c87f6a ``` ```console $ docker network inspect simple-network ``` The output is in JSON format, for example: ```json [ { "Name": "simple-network", "Id": "69568e6336d8c96bbf57869030919f7c69524f71183b44d80948bd3927c87f6a", "Created": "2016-10-19T04:33:30.360899459Z", "Scope": "local", "Driver": "bridge", "IPAM": { "Driver": "default", "Config": [ { "Subnet": "172.22.0.0/16", "Gateway": "172.22.0.1" } ] }, "Containers": {}, "Options": {}, "Labels": {} } ] ``` ### Inspect the `ingress` network For swarm mode overlay networks `network inspect` also shows the IP address and node name of the peers. Peers are the nodes in the swarm cluster which have at least one task attached to the network. Node name is of the format `-`. ```console $ docker network inspect ingress ``` The output is in JSON format, for example: ```json [ { "Name": "ingress", "Id": "j0izitrut30h975vk4m1u5kk3", "Created": "2016-11-08T06:49:59.803387552Z", "Scope": "swarm", "Driver": "overlay", "EnableIPv6": false, "IPAM": { "Driver": "default", "Options": null, "Config": [ { "Subnet": "10.255.0.0/16", "Gateway": "10.255.0.1" } ] }, "Internal": false, "Attachable": false, "Containers": { "ingress-sbox": { "Name": "ingress-endpoint", "EndpointID": "40e002d27b7e5d75f60bc72199d8cae3344e1896abec5eddae9743755fe09115", "MacAddress": "02:42:0a:ff:00:03", "IPv4Address": "10.255.0.3/16", "IPv6Address": "" } }, "Options": { "com.docker.network.driver.overlay.vxlanid_list": "256" }, "Labels": {}, "Peers": [ { "Name": "net-1-1d22adfe4d5c", "IP": "192.168.33.11" }, { "Name": "net-2-d55d838b34af", "IP": "192.168.33.12" }, { "Name": "net-3-8473f8140bd9", "IP": "192.168.33.13" } ] } ] ``` ### Using `verbose` option for `network inspect` `docker network inspect --verbose` for swarm mode overlay networks shows service-specific details such as the service's VIP and port mappings. It also shows IPs of service tasks, and the IPs of the nodes where the tasks are running. Following is an example output for an overlay network `ov1` that has one service `s1` attached to. service `s1` in this case has three replicas. ```console $ docker network inspect --verbose ov1 ``` The output is in JSON format, for example: ```json [ { "Name": "ov1", "Id": "ybmyjvao9vtzy3oorxbssj13b", "Created": "2017-03-13T17:04:39.776106792Z", "Scope": "swarm", "Driver": "overlay", "EnableIPv6": false, "IPAM": { "Driver": "default", "Options": null, "Config": [ { "Subnet": "10.0.0.0/24", "Gateway": "10.0.0.1" } ] }, "Internal": false, "Attachable": false, "Containers": { "020403bd88a15f60747fd25d1ad5fa1272eb740e8a97fc547d8ad07b2f721c5e": { "Name": "s1.1.pjn2ik0sfgkfzed3h0s00gs9o", "EndpointID": "ad16946f416562d658f3bb30b9830d73ad91ccf6feae44411269cd0ff674714e", "MacAddress": "02:42:0a:00:00:04", "IPv4Address": "10.0.0.4/24", "IPv6Address": "" } }, "Options": { "com.docker.network.driver.overlay.vxlanid_list": "4097" }, "Labels": {}, "Peers": [ { "Name": "net-3-5d3cfd30a58c", "IP": "192.168.33.13" }, { "Name": "net-1-6ecbc0040a73", "IP": "192.168.33.11" }, { "Name": "net-2-fb80208efd75", "IP": "192.168.33.12" } ], "Services": { "s1": { "VIP": "10.0.0.2", "Ports": [], "LocalLBIndex": 257, "Tasks": [ { "Name": "s1.2.q4hcq2aiiml25ubtrtg4q1txt", "EndpointID": "040879b027e55fb658e8b60ae3b87c6cdac7d291e86a190a3b5ac6567b26511a", "EndpointIP": "10.0.0.5", "Info": { "Host IP": "192.168.33.11" } }, { "Name": "s1.3.yawl4cgkp7imkfx469kn9j6lm", "EndpointID": "106edff9f120efe44068b834e1cddb5b39dd4a3af70211378b2f7a9e562bbad8", "EndpointIP": "10.0.0.3", "Info": { "Host IP": "192.168.33.12" } }, { "Name": "s1.1.pjn2ik0sfgkfzed3h0s00gs9o", "EndpointID": "ad16946f416562d658f3bb30b9830d73ad91ccf6feae44411269cd0ff674714e", "EndpointIP": "10.0.0.4", "Info": { "Host IP": "192.168.33.13" } } ] } } } ] ``` ## Related commands * [network disconnect ](network_disconnect.md) * [network connect](network_connect.md) * [network create](network_create.md) * [network ls](network_ls.md) * [network rm](network_rm.md) * [network prune](network_prune.md) * [Understand Docker container networks](https://docs.docker.com/engine/userguide/networking/)