kind: collectionstate

A subcollection is a Collection that’s attached to a higher-level Resource object. Subcollections are almost exactly the same as collections; the exception is that they can only be accessed via the resource they’re attached to (the ‘parent’ resource). A subcollection can be identified by the value isSubcollection: true, followed by an items attribute listing the subcollection’s resources. Just as with collections, you can use get_collection() to get a list of the resources in the subcollection.


A pool resource has a members_s subcollection attached to it; you must create or load the ‘parent’ resource (pool) before you can access the subcollection (members_s).

>>> from f5.bigip import ManagementRoot
>>> mgmt = ManagementRoot('', 'myuser', 'mypass')
>>> pool ='Common', name='p1')
>>> members = pool.members_s.get_collection()


In the above example, the subcollection object – members_s – ends in _s because the subcollection resource object name (members) is already plural.

The JSON returned for a pool with one member is shown below. Note the highlighted rows, which indicate the subcollection.


    "kind": "tm:ltm:pool:poolstate",
    "name": "p1",
    "partition": "Common",
    "fullPath": "/Common/p1",
    "generation": 18703,
    "selfLink": "https://localhost/mgmt/tm/ltm/pool/~Common~p1?expandSubcollections=true&ver=11.6.0",
    "allowNat": "yes",
    "allowSnat": "yes",
    "ignorePersistedWeight": "disabled",
    "ipTosToClient": "pass-through",
    "ipTosToServer": "pass-through",
    "linkQosToClient": "pass-through",
    "linkQosToServer": "pass-through",
    "loadBalancingMode": "round-robin",
    "minActiveMembers": 0,
    "minUpMembers": 0,
    "minUpMembersAction": "failover",
    "minUpMembersChecking": "disabled",
    "queueDepthLimit": 0,
    "queueOnConnectionLimit": "disabled",
    "queueTimeLimit": 0,
    "reselectTries": 0,
    "serviceDownAction": "none",
    "slowRampTime": 10,
    "membersReference": {
        "link": "https://localhost/mgmt/tm/ltm/pool/~Common~p1/members?ver=11.6.0",
        "isSubcollection": true,
        "items": [
                "kind": "tm:ltm:pool:members:membersstate",
                "name": "n1:80",
                "partition": "Common",
                "fullPath": "/Common/n1:80",
                "generation": 18703,
                "selfLink": "https://localhost/mgmt/tm/ltm/pool/~Common~p1/members/~Common~n1:80?ver=11.6.0",
                "address": "",
                "connectionLimit": 0,
                "dynamicRatio": 1,
                "ephemeral": "false",
                "fqdn": {
                  "autopopulate": "disabled",
                "inheritProfile": "enabled",
                "logging": "disabled",
                "monitor": "default",
                "priorityGroup": 0,
                "rateLimit": "disabled",
                "ratio": 1,
                "session": "user-enabled",
                "state": "unchecked",