Brand: D-Link
Category: Networking
Document Type: Manual
Language: EN
Available Languages: EN , ES
Manual for DSR-250 / 250N / 500 / 500N / 1000 / 1000N
Uploaded: Nov. 21, 2025, 6:59 p.m.
Manual Publish Date: 2011
Warranty Information
This manual does not contain specific warranty period information.
The D-Link Unified Services Routers offer a secure, high-performance networking solution for small and medium businesses. Key features include integrated high-speed IEEE 802.11n and 3G wireless technologies, virtual private network (VPN) tunnels (IPsec, PPTP, L2TP, SSL) for optimal security, and comprehensive management capabilities.
Models like the DSR-500, DSR-500N, DSR-1000, and DSR-1000N feature dual-WAN Gigabit Ethernet with policy-based service management, failover, and outbound load balancing for high availability. The second WAN port can be configured as a DMZ port. DSR-250/250N have a single WAN interface.
Wireless performance is superior with DSR-500N and DSR-1000N supporting 802.11 a/b/g/n on 2.4 GHz or 5 GHz bands, utilizing MIMO technology. DSR-250N and DSR-500N support the 2.4GHz band only.
Deployment options are flexible, with DSR-1000/1000N supporting 3G networks via USB dongle for an additional secure data connection. Robust VPN features allow for simultaneous management of multiple VPN tunnels, empowering mobile users with remote access.
Troubleshooting and error codes
| Issue | Possible Solution |
|---|---|
| Internet connection | Verify physical connection to the modem and router, check WAN settings, restart modem and router. |
| Date and time incorrect | Manually set the date and time or configure NTP server settings. |
| LAN connectivity issues | Check LAN cable connections, verify IP and DHCP settings, ping router and other devices. |
| Wireless connection problems | Verify wireless security settings, check SSID, channel, and signal strength. |
| VPN tunnel not establishing | Verify VPN server and client settings, pre-shared keys, and authentication methods. |