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Reckless11
Contributor
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Message 1 of 10

My Default Gateway has changed.

My WAN Gateway 172.16.x.x range which has been the same for years has changed. 

 

What causes this?

What is this the address of? My Cabinet? My Exchange?

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9 REPLIES 9
Distinguished Sage
Distinguished Sage
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Message 2 of 10

Re: My Default Gateway has changed.

Its the BRAS, it could have changed for a number of reasons.

Related image

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Reckless11
Contributor
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Message 3 of 10

Re: My Default Gateway has changed.

In laymans terms?

So it has nothing to do with the cabinet/exchange?

I've noticed a lot ok work where both my exchange is located, as well as in the local area.
Just wondered whether it was a result of this, e.g. Being routed through a different cabinet etc.
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Distinguished Sage
Distinguished Sage
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Message 4 of 10

Re: My Default Gateway has changed.

No, the BRAS is not located at your local exchange or cabinet, they are located at a small number ( <100 )of sites across the country to aggregate local nodes.

If the reason for your concern is whether your broadband speed will change, the answer is definitely not as far as sync speed is concerned as that is determined by the distance of your copper cable to the DSLAM in the green cabinet. However, there is a slight possibility that the network has been re-arranged to overcome congestion problems in the backhaul so you might see an improvement in throughput speeds if you have been experiencing problems.

Reckless11
Contributor
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Message 5 of 10

Re: My Default Gateway has changed.

Thankyou very much for the reply.

The reason I was interested in this is because since I have noticed the Gateway change, i've also noticed a reduction in ping times to specific game servers by over 50%.
These UK servers which were averaging a ping of 20-25 ms before are now around 10-14 ms.

Could this be a result of the change, or purely coincidental?
Is this change also something that can be made Manually, for example if it reverts back to the slower gateway, can it be changed by BT, or is it dealt with by the internal infrastructure?

Thanks again.
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Sage
Sage
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Message 6 of 10

Re: My Default Gateway has changed.

BT Retail, your ISP, has no control over the BRAS.

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Distinguished Sage
Distinguished Sage
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Message 7 of 10

Re: My Default Gateway has changed.

It could well be a result of the change, improvements to the network architecture. Nobody can change which BRAS you connect to without a major re-arrangement of the BTWholesale network.

Reckless11
Contributor
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Message 8 of 10

Re: My Default Gateway has changed.

Fair enough.
Obviously im happy with the change, just hoping it doesnt revert anytime soon.
Reckless11
Contributor
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Message 9 of 10

Re: My Default Gateway has changed.

Not sure whether a coincidence, or as a result of this, but I also have IPV6 access now.
Is it possible as a result of this change, or just coincidental?
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Sage
Sage
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Message 10 of 10

Re: My Default Gateway has changed.

I would think it is due to network upgrades.

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