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The **topologyd** daemon constructs full topology of a IEEE1905 enabled Multi-AP network.
It provides the `topology` UBUS object and methods ( *see UBUS API section below* ) for building and showing the full topology of a network.
**topologyd** uses IEEE1905 AL macaddress of a node, where it is running, as the starting (or Root) node. It then discovers it's immediate neighbors, the next-hop neighbors, the next to next-hop neighbors, and so on... until there are no more neighbor nodes in the network, to build the full topology around the starting node.
>By default, **topologyd** rebuilds the topology every 60 seconds.
To (re)build topology, the UBUS method "*refresh*" can be used. See Usage below -
Nbr(P) = {N0,..Nn} <== immediate neighbors of P.
G{P, N0,..Nn} <== graph of all known nodes at P.
Step 1 :
for all Ni in G :
Send Topology Request to Ni.
Step 3 :
Repeat Step 1-2 until no new Nbr(Ni) can be inserted in 'G'.
map-topology provides the `topology` UBUS object with following methods :
#To (re)build topology -
root@iopsys:~$ ubus call topology refresh
#To get status (can be "incomplete" or "available") -
root@iopsys:~$ ubus call topology status
"self": {
"ieee1905_macaddr": "00:22:07:70:f5:6c",
"num_neighbors": 1,
"neighbors": [
{
"nbr_mac_id": "00:22:07:6e:d8:08"
}
],
"num_non1905_neighbors": 3,
"non1905_neighbors": [
"00:22:07:6d:3d:8e",
"00:22:07:6d:3d:90",
"b0:5c:da:5d:9e:19"
]
},
"nodes": [
"ieee1905_macaddr": "00:22:07:6e:d8:08",
"num_neighbors": 1,
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{
"nbr_mac_id": "00:22:07:70:f5:6c",
"link_metrics": [
{
"nbr_intf_macid": "00:22:07:70:f5:6c",
"ieee_bridge": 1,
"tx_packet_error": 0,
"tx_packet_ok": 1081,
"mac_thrput_capacity": 0,
"link_availability": 100,
"phy_rate": 0,
"rx_packet_error": 0,
"rx_packet_ok": 2265,
"rssi": 0
}
]
}
],
"num_non1905_neighbors": 1,
"non1905_neighbors": [
"b0:5c:da:5d:9e:19"
],
"registrar_freq_band": "802.11 2.4 GHz,802.11 5 GHz",
"non1905_nbr_localintf": "00:22:07:6e:d8:08",
"1905_nbr_localintf": "00:22:07:6e:d8:08",
"local_interface_nbr": 3,
"interfaces": [
{
"interface_id": "00:22:07:6e:d8:09",
"media_type": "IEEE 802.11ac",
"network_membership": "00:22:07:6e:d8:09",
"role": "AP",
"ap_channel_band": 2,
"freq_index1": 60,
"freq_index2": 0
},
{
"interface_id": "00:22:07:6e:d8:0a",
"media_type": "IEEE 802.11n 2.4",
"network_membership": "00:22:07:6e:d8:0a",
"role": "AP",
"ap_channel_band": 0,
"freq_index1": 11,
"freq_index2": 0
},
{
"interface_id": "00:22:07:6e:d8:08",
"media_type": "IEEE 802.3ab"
}
],
"l2_neighbor_num": 2,
"l2_neighbor": [
{
"local_intf_id": "00:22:07:6e:d8:08",
"local_nbr_id": "00:22:07:70:f5:6c"
},
{
"local_intf_id": "00:22:07:6e:d8:08",
"local_nbr_id": "b0:5c:da:5d:9e:19"
}
],
{
"br_mac": [
"00:22:07:6e:d8:09",
"00:22:07:6e:d8:0a",
"00:22:07:6e:d8:08"
]
}
],
"version": "1905.1a",
"friendly_name": "iopsysWrt",
"manufacturer_name": "IOPSYS",
"manufacturer_model": "EG400R0",
"control_url": "http://192.168.1.1",
"ipv4_itfr_num": 1,
"ipv4_params": [
{
"mac_address": "00:22:07:6e:d8:08",
"ipv4_addr_type": "IPV4_DHCP",
"ipv4_address": "192.168.1.1",
"dhcp_addr": "127.1.1.1"
}
root@iopsys:# ubus call topology changelog
"num_changelog": 2,
"changelog": [
{
"reporter": "00:22:07:6e:d8:08",
"reporter_interface": "00:22:07:6e:d8:08",
"neighbor": "00:22:07:6e:d8:08",
"is1905_neighbor": "true",
"event_type": "add",
"timestamp": "2020-08-25T12:02:46"
},
{
"reporter": "00:22:07:6e:d8:08",
"reporter_interface": "00:22:07:6e:d8:08",
"neighbor": "b0:5c:da:5d:9e:19",
"is1905_neighbor": "false",
"event_type": "add",
"timestamp": "2020-08-25T12:09:24"
}
]
#To show the topology nodes macaddress -
root@iopsys:# ubus call topology nodes
{
"ieee1905_macaddr": "00:22:07:70:f5:6c",
"neighbors": [
"00:22:07:6e:d8:08",
"00:22:07:6d:3d:8e"
]
}
- Tested with two IEEE1905 devices in the network.
- Tested with only one IEEE1905 AL macaddress interface.
### Dependencies
To successfully build map-topology, the following libraries are needed:
| Dependency | Link | License |
| ----------------- | ---------------------------------------------------------------- | -------------- |
| libubox | https://git.openwrt.org/project/libubox.git | BSD |
| libubus | https://git.openwrt.org/project/ubus.git | LGPL 2.1 |