📡 Monitoring a Tenda OLT

Tenda GPON OLTs (TES70xx series, e.g. TES7001, TES7002) are monitored without SNMP — the TES7001 has no SNMP agent at all, so there is nothing to enable on the OLT and the SNMP guide does not apply. ISPMan logs in to the OLT's web admin UI, the same way you do in a browser, and reads everything from there: system info, PON ports, ONUs with their optical power, uplinks, traffic and alarms.

✅ Tested models

The models share the same web UI, so the steps are the same. On a model not marked tested, press Poll now right after setup: if PONs and ONUs appear, it works. If the poll errors or the ONU list stays empty, contact ISPMan support with the model and firmware.

⚙️ How it works

• ISPMan reaches the OLT through the parent router's WireGuard interface. The router forwards a port to the OLT's web UI and masquerades that traffic, so the OLT answers the router.
• Every poll logs in with the OLT's admin username and password, reads the data and logs out. Without the login ISPMan can read nothing.
• Polling does not log you out of the OLT's web UI — sessions are independent.
• ISPMan only reads. It never changes the OLT's configuration.

📋 Prerequisites

• The router the OLT sits behind is added to ISPMan and online.
• You know the OLT's management IP (e.g. x.x.x.x).
• You have the OLT's web admin username and password.

Step 1 — Give the router an address on the OLT's network

The OLT's management is untagged on its uplink ports, so the router port facing the OLT only needs an IP in the same subnet:

/ip address add address=<router-ip-in-olt-subnet>/24 interface=<port-to-olt> comment="OLT mgmt"
/ping <olt-management-ip> count=3

Use a free address in the OLT's management subnet (e.g. OLT at x.x.x.y → router x.x.x.z/24) on the port the OLT is cabled to.

The ping must reply before you continue.

Step 2 — Add the OLT in ISPMan

Go to Devices → OLTs → Add OLT and fill in:

• Parent router — the router from Step 1.
• Name, and Brand = Tenda.
• OLT LAN IP — the OLT's management IP.
• Leave the SNMP fields as generated — they are not used for a Tenda.

Then Edit the OLT, turn on “Collect ONUs via the OLT web UI”, click Pick a free one for the exposed web port, keep the OLT web port at 80, and save.

Step 3 — Save the OLT's web login

On the OLT's page click Admin access and save the OLT's web username (usually admin) and password. This is required — without it every poll fails with incomplete_web_config.

Step 4 — Apply the NAT rules

On the OLT's page click Router NAT, then Apply on <your router>. ISPMan pushes:

• olt-web:<olt id> — forwards the exposed web port on the WireGuard interface to the OLT's port 80.
• olt-web-masq:<olt id> — masquerade, so the OLT's replies come back. Don't delete it.
• olt-snmp:<olt id> — pushed for every OLT; unused by a Tenda and harmless.

Step 5 — Verify

1. Click Poll now. A good result reads “Polled OK — … (collected via the web UI)”.
2. You'll see the system info (model, firmware, uptime, temperature), PON ports, the ONU list — each ONU by serial number with its Rx power — and the OLT's alarms under Events.

🛠️ Troubleshooting