Giga Hub 2.0: PPPoE passthrough/2nd PPPoE session capped (average 330 Mbps) on 3 Gbps plan

[Velaris]

Hello,

I'm on a 3 Gbps plan and I'm seeing a repeatable/hard throughput cap only when using PPPoE on a downstream device (PPPoE passthrough / second session).

My setup:

- Bell Giga Hub 2.0
- Downstream router: UniFi Cloud Gateway Fiber (UCG-Fiber) connected to the Giga Hub 10G port

What works:

- If the UCG-Fiber WAN is set to DHCP (e.g. behind the Giga Hub 2.0/double NAT), I can reach full speed (~3 Gbps).
- If my PC is behind the Giga Hub 2.0 on DHCP, my PC (1GbE NIC) reaches the expected ~1 Gbps.

The problem (reproducible):

When I establish a PPPoE session from a device behind the Giga Hub, throughput is capped around ~300–330 Mbps.

Repro 1: PPPoE from UCG-Fiber

- UCG-Fiber WAN set to PPPoE using my b1 credentials
- Result: ~300–330 Mbps (repeatable), despite 3 Gbps plan

Repro 2: PPPoE from a Windows PC (bypassing UCG-Fiber)

- PC connected by Ethernet to the Giga Hub 2.0
- PC NIC: 1GbE, cable: Cat6A
- Created a Windows "Broadband (PPPoE)" connection using the same b1 credentials
- Result: same cap at ~300–330 Mbps (repeatable)

Because the same cap occurs even when PPPoE is established directly from a PC (*no* UniFi router involved), it points to the Giga Hub 2.0 PPPoE passthrough / secondary PPPoE session path rather than my router.

Can you confirm:

- Is this a known issue on the Giga Hub 2.0 (firmware-related)?
- Is there a firmware update or hardware replacement option to resolve PPPoE passthrough speed caps?

Thanks

[BellPatricia · Accepted solution]

Hi everyone,

Thank you for reaching out to the Bell community about this.

We wanted to pop in and confirm that this is a known limitation, and a solution is currently under development. 

We’ll be sure to communicate any new updates when we’re able to.

Have a nice day 🙂

@BellPatricia 

[techdan]

Great to hear for GigaHub 2.0 users, but will this also be applied to the HH4000?   I experience similar symptoms when using a PPPoE connection on a UDM.    I observe 100% CPU on the HH4000, high latency (200-500ms) and occasionally dropped packets.     When using DMZ, the cpu on the HH4000 is 40-60% and stable.

[RobotG]

Is there an explanation why this has happened now on setups that have been fine using PPPOE and the Gigahub 2 for months, upwards of a year? Has Bell rolled up an update on the Gigahub 2 recently to break our setups? 

[SanthoshV]

Hey there, you guys acknowledged this bug back in November 2025, There is still no fix yet. What's going on? What's the alternative? Customer service says They cannot downgrade me to Home Hub 4000. Which is very inconvenient resolution.

[dks]

Thanks for your question. Bell does not announce firmware updates or provide Release Notes. The current firmware version is 3.11.3, I believe. Bell also does not change modems other than to replace what you have or migrate customers to the most recent model, if possible.