Overview

Backing up and exporting the configuration XML file from your ONT router is a critical operational task for network architects and telecom engineers managing B2B edge deployments. Whether you are preparing for a firmware upgrade, migrating to a new hardware revision, or recovering from a catastrophic failure, having a valid XML configuration backup ensures rapid service restoration and minimizes network downtime. This FAQ addresses the most common pre-sales and post-sales questions surrounding ONT router configuration management, CLI access, file transfer protocols, and high-availability failover procedures.

Frequently Asked Questions

Q1: How do I backup and export the configuration XML file from my ONT router?

You can backup and export the configuration XML file from your ONT router using the CLI command copy running-config startup-config followed by copy startup-config tftp://<server-ip>/ont-config.xml or via the web GUI under Administration > Configuration > Export. The CLI method is preferred for B2B deployments because it supports automated scripting, SCP/SFTP encryption, and remote execution without disrupting live traffic. Always verify the exported XML file integrity using a checksum (MD5/SHA-256) before archiving.

Q2: What is the maximum switching throughput and backplane capacity of this ONT router?

The maximum switching throughput is 320 Gbps with a backplane capacity of 480 Gbps and a forwarding rate of 240 Mpps, supporting line-rate performance across all Gigabit Ethernet and 10G uplink ports. This capacity ensures non-blocking architecture for enterprise edge aggregation and multi-service access scenarios. The hardware ASIC delivers wire-speed forwarding even with jumbo frames (9K MTU) and full QoS policy enforcement enabled.

Q3: Which optical transceivers (SFP/SFP+/QSFP28) are compatible with the ONT router's uplink ports?

The ONT router supports a broad range of third-party optical transceivers including 1000BASE-SX/LX/EX, 10GBASE-SR/LR/ER (SFP+), and 40GBASE-SR4/LR4 (QSFP+), with QSFP28 100G support on designated uplink ports. For guaranteed compatibility, use transceivers that comply with MSA (Multi-Source Agreement) standards and IEEE 802.3ba/802.3ae. Always verify the optical module's DOM (Digital Optical Monitoring) capability and temperature range for your deployment environment.

Q4: How do I configure basic CLI settings and console connection for the first time?

Connect to the ONT router via the RJ45 console port using 115200 baud, 8 data bits, no parity, 1 stop bit, and no flow control, then log in with default credentials (admin/admin) and run configure terminal to enter global configuration mode. Essential initial settings include hostname, management ip address, default gateway, and ntp server for time synchronization. Save your changes with write memory or copy running-config startup-config to persist across reboots.

Q5: How does redundant power supply failover work and how do I troubleshoot it?

Redundant power supply failover automatically switches to the backup PSU within 10ms of a primary power failure, ensuring zero packet loss and continuous service availability. Troubleshoot by checking PSU status LEDs (green=OK, amber=fault, off=no power), verifying input voltage (100-240VAC or -48VDC), and reviewing logs via show power or show environment commands. If failover does not occur, test each PSU independently and replace any unit showing abnormal voltage or fan failure.

Q6: What is the difference between this ONT router generation and the previous generation?

The current generation doubles backplane capacity to 480 Gbps, adds QSFP28 100G uplink support, introduces hardware-based MACsec encryption, and reduces power consumption by 25% compared to the previous generation. It also adds advanced stacking capabilities with up to 8 units in a virtual chassis and supports NETCONF/YANG for model-driven programmability. Legacy features like RSTP and static routing are preserved for seamless migration.

Q7: How do I export configuration XML via USB or SCP for offline archival?

To export via USB, insert a FAT32-formatted USB drive into the USB port, run copy startup-config usb:/ont-config.xml, and safely eject the drive; for SCP, use copy startup-config scp://user@server/path/ont-config.xml with SSH key or password authentication. Both methods produce a standards-compliant XML file that can be re-imported using copy usb:/ont-config.xml startup-config or copy scp://... startup-config. Always store backups in an encrypted, version-controlled repository with timestamps.

Q8: How do I stack multiple ONT routers and troubleshoot stacking interface errors?

Stack up to 8 ONT routers using dedicated 40G/100G stacking ports or standard SFP+ uplinks with stacking enable, then verify topology with show stacking and show stacking topology. Common stacking errors include cable mismatches (use identical DAC/AOC cables), firmware version mismatches (upgrade all units to the same version), and loop detection failures (ensure ring topology is properly closed). If a stack member is not joining, check the stacking LED, cable seating, and show stacking neighbors output.