Replace Your Sky or Vodafone Router
Published July 27, 2026 • Updated August 05, 2026
If your home has full-fibre broadband and a small fibre termination box on the wall with an Ethernet port, you can usually connect a suitable third-party router directly to it.
This lets you replace the ISP-supplied Sky Hub or Vodafone router with your own hardware for better Wi-Fi, stronger controls, VPN features, or more capable networking.
This guide applies to Sky Ireland and Vodafone Ireland full-fibre services where the fibre enters an ONT (Optical Network Terminal) and the ONT provides Ethernet to the ISP router.
Before You Start
Look for the wall-mounted unit where the fibre cable terminates. It is normally called an ONT and will have a fibre input and one or more Ethernet ports. The existing Sky or Vodafone router should be connected from that ONT’s Ethernet port to its WAN/Internet port.
Your replacement router must support:
- PPPoE WAN connections
- 802.1Q VLAN tagging on its WAN interface
- A gigabit Ethernet WAN port, or 2.5GbE if your broadband package exceeds 1Gbps
Keep the ISP router somewhere safe. If you need technical support for a line problem, Sky or Vodafone may ask you to reconnect their supplied device while they test the service.
Physical Connection
- Disconnect the Ethernet cable running from the ONT to the ISP router.
- Connect that cable to the WAN or Internet port on your own router.
- Open your router’s administration interface.
- Configure the WAN connection using the relevant ISP settings below.
- Save the configuration and allow a few minutes for the PPPoE session to establish.
Do not disconnect or reset the fibre cable or ONT. The only cable you normally need to move is the Ethernet cable between the ONT and router.
Sky Ireland Configuration
For Sky Ireland fibre, set the WAN connection to PPPoE and add VLAN ID 10.
| Setting | Value |
|---|---|
| Connection type | PPPoE |
| Username | anything@skydsl |
| Password | anything |
| WAN VLAN ID | 10 |
| MTU | 1492 initially |
| DNS | Automatic, or your preferred DNS provider |
Sky’s authentication is commonly reported to accept placeholder PPPoE credentials, while VLAN 10 is the important network setting.
After saving the configuration, the router should obtain a public IP address and show its WAN connection as active.
Vodafone Ireland Configuration
Vodafone Ireland full fibre also uses PPPoE and WAN VLAN 10, but it uses fixed published PPPoE credentials.
| Setting | Value |
|---|---|
| Connection type | PPPoE |
| Username | vodafone@vodafone.ie |
| Password | broadband |
| WAN VLAN ID | 10 |
| MTU | 1492 initially |
| DNS | Automatic, or your preferred DNS provider |
The same physical arrangement applies: ONT Ethernet directly to your router’s WAN port.
You may encounter old Vodafone documentation referring to VPI and VCI values. Those relate to older DSL services over a telephone line and do not apply when you have an Ethernet connection from a fibre ONT.
Why PPPoE Is Used
PPPoE—Point-to-Point Protocol over Ethernet—is an older but still common ISP access method. It creates an authenticated connection between your router and the provider’s network.
It does not make fibre broadband inherently less reliable. Connection stability depends far more on the fibre/ONT, ISP network, router firmware, power supply, and correct WAN configuration than on PPPoE itself.
PPPoE has a small framing overhead. Traditionally, this means an MTU of 1492 rather than the standard Ethernet MTU of 1500. In normal use, that difference is negligible for streaming, video calls, browsing, online gaming, and downloads.
Performance Considerations
The main consideration is whether the router can process PPPoE at your line speed. PPPoE can require more router CPU work than a plain DHCP WAN connection, particularly at very high speeds.
For broadband packages up to around 1Gbps, a modern mid-range or high-performance router should normally be suitable. For multi-gigabit services, verify the manufacturer’s stated PPPoE throughput rather than relying only on its Ethernet port speed or Wi-Fi rating.
After installation, run a wired speed test and check the router’s CPU load. If speeds reach your subscribed rate without sustained high CPU use, the router is handling PPPoE correctly.
Troubleshooting
If the connection does not come up, start with the basics:
- Confirm the ONT Ethernet cable is in your router’s dedicated WAN port, not a LAN port.
- Confirm PPPoE—not DHCP or static IP—is selected.
- Confirm WAN VLAN ID is set to 10.
- Re-enter the username and password carefully.
- Set the MTU to 1492.
- Power-cycle the ONT and router: turn off both, wait about a minute, power on the ONT first, wait for it to settle, then power on the router.
- Check whether the router has received a WAN IP address and whether the PPPoE log reports authentication or VLAN errors.
If you need to raise a fault with Sky or Vodafone, reconnect the original ISP router first. This makes it easier for support to verify whether the issue is with the broadband line or your own equipment.
Final Notes
Replacing an ISP router does not change the underlying broadband service. The ONT remains the fibre endpoint, while your own router takes over the routing, Wi-Fi, firewall, and local-network duties.
Appendix: Other Irish Providers and Personal Routers
Your ability to replace an ISP router depends on the access technology, not only the retail brand.
If your service has a fibre ONT with an Ethernet port, a personal router can often connect directly to the ONT using the provider’s required WAN method, VLAN tag, and—where needed—PPPoE credentials. On cable, DSL, fixed-wireless, and mobile services, the ISP device may also perform a modem or radio function and may need to remain in place.
Important: The configurations below are common reported settings, not a substitute for ISP support. Providers can use different settings across OpenEir, SIRO, NBI, legacy services, static-IP products, and newer packages. Keep the original router so that you can reconnect it for fault diagnosis.
Virgin Media Ireland: A Different Model
Virgin Media differs from most OpenEir, SIRO and NBI fibre services. On its cable network, the Virgin Hub is not merely a Wi-Fi router: it also acts as the cable modem that connects and authenticates to Virgin’s network.
You would normally keep the Virgin Hub, enable Modem Mode, and connect your own router to it by Ethernet. Configure the personal router’s WAN as DHCP / Automatic IP—not PPPoE.
Virgin cable connection
|
Virgin Hub in Modem Mode
|
Ethernet
|
Your router WAN port
|
Your home network
In this arrangement, your router still controls your home network, including Wi-Fi, firewall rules, DNS, VPN, DHCP reservations, port forwarding, and local-network features. The Virgin Hub remains only as the network termination modem.
Other Providers
| Provider | Usual access network | Can a personal router connect directly to the ONT? | Typical WAN configuration | Notes |
|---|---|---|---|---|
| eir | OpenEir FTTH | Usually yes | DHCP/IPoE; VLAN 10 may be required | DHCP/IPoE is generally preferable where available. PPPoE may be required for some static-IP or legacy configurations. If you use eir home phone/VoIP, keep the supplied router unless eir provides separate SIP details. |
| Digiweb | OpenEir, SIRO, NBI | Usually yes | PPPoE; commonly VLAN 10 | Reported OpenEir credentials: digiweb@nga.digiweb.ie / digiweb. Reported SIRO credentials: digiweb@siro.digiweb.ie / digiweb. Confirm the correct details with Digiweb. |
| Pure Telecom | OpenEir, SIRO, NBI | Usually yes | PPPoE or DHCP/IPoE; commonly VLAN 10 | Reported PPPoE credentials: puretelecom@puretel.ie / broadband1. Some installations may use DHCP/IPoE instead. Confirm with Pure Telecom. |
| Blacknight | Usually OpenEir; availability varies | Usually yes, on FTTH | PPPoE; reported VLAN 15 | Reported credentials: broadband@bk.network / broadband. The reported VLAN is 15, not the commonly seen VLAN 10, so do not copy settings from another provider. Confirm with Blacknight. |
| Fastcom | OpenEir, SIRO and/or NBI, depending on product | Often possible on FTTH | Provider-specific | Request the WAN type, VLAN ID and any PPPoE credentials from Fastcom before replacing its router. |
| Rural WiFi | FTTH and fixed-wireless products | Depends on product | PPPoE, DHCP/IPoE or ISP CPE | On FTTH with an Ethernet ONT, direct use may be possible. On fixed wireless, the outdoor radio/CPE must remain because it is part of the access connection. |
| Imagine | Fixed wireless / 4G / 5G | No, not in the fibre-ONT sense | DHCP behind ISP CPE | The installed outdoor/indoor radio equipment normally remains. Connect your router behind it, using bridge mode or IP passthrough if offered. Otherwise, use DMZ or accept double NAT. |
| Three Broadband | 4G / 5G mobile | No ONT to replace | SIM/APN connection | A compatible unlocked 4G/5G router may work with the supplied SIM, subject to service terms and APN requirements. This is not PPPoE or fibre. |
| GoMo, 48, Clear Mobile | Mobile services | No ONT to replace | SIM/APN connection | These are mobile services rather than conventional fixed-fibre providers. A suitable unlocked SIM router may be possible, subject to plan and network restrictions. |
Choosing the Right WAN Mode
Use the WAN method specified by your retail ISP—not the method used by another provider on the same fibre network.
| WAN mode | When it is normally used | Router settings to expect |
|---|---|---|
| PPPoE | Common with many Irish fibre resellers | PPPoE username, password, usually MTU 1492, and possibly a WAN VLAN |
| DHCP / IPoE | Used by some fibre services, including many standard eir setups | Automatic/DHCP IP address; may still need a WAN VLAN |
| DHCP Option 61 | Used by some provider and network combinations | DHCP with a client identifier; router support varies |
| Bridge / Modem Mode | Cable, some DSL, and certain wireless gateways | ISP modem/CPE stays connected; personal router receives its WAN address by DHCP |
| Double NAT / DMZ | When bridge mode is unavailable | Personal router sits behind the ISP router; use DMZ to the personal router where possible |
Why the Underlying Network Matters
Ireland’s main fixed broadband networks are:
- OpenEir: a wholesale fibre and copper network used by eir and many retail providers.
- SIRO: a wholesale fibre-to-the-premises network used by multiple providers.
- NBI: the National Broadband Ireland rural fibre network, sold through approved retail providers.
- Virgin Media: primarily a separate cable network, where the supplied hub normally remains as the modem.
The same provider can use different connection methods depending on whether your address is served by OpenEir, SIRO, NBI, cable, or an older DSL product. This is why another customer’s settings may not work at your address.
Before Replacing an ISP Router
Ask the ISP these questions before disconnecting its equipment:
1. Is my service full fibre with an Ethernet ONT, cable, DSL, fixed wireless, or mobile?
2. Can I connect my own router directly to the ONT?
3. Is the WAN method PPPoE, DHCP/IPoE, DHCP Option 61, or another method?
4. Is a WAN VLAN required? If so, what VLAN ID and priority should I use?
5. If PPPoE is required, what username and password should I use?
6. Does the supplied router provide phone/VoIP service that requires it to remain connected?
7. Will support require the ISP router to be reconnected during fault testing?
General Troubleshooting
If a direct ONT connection does not work, check the following before assuming the service is faulty:
- The Ethernet cable from the ONT is connected to the router’s WAN/Internet port.
- The correct WAN mode is selected: PPPoE, DHCP/IPoE, or another provider-specified method.
- The required WAN VLAN has been configured.
- PPPoE credentials have been entered exactly.
- The PPPoE MTU is set to 1492 unless the provider specifies otherwise.
- The ONT has been allowed to fully start before powering on the router.
- The original ISP router has been tested again before contacting support.
A direct connection can be technically possible even if a provider does not officially troubleshoot third-party equipment. For any fault report, reconnecting the ISP-supplied router first makes it easier to separate an issue with the fibre service from an issue with personal router configuration.