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<div class="moz-cite-prefix">On 19/Jan/16 09:33, Vincent Mwamba
wrote:<br>
<br>
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<div>Hi,<br data-mce-bogus="1">
</div>
<div><br data-mce-bogus="1">
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<div>We are in the process of installing Broadband network
gateways(BNG) on ASR9k for subscriber management in the access
network using PPPoE and IPoE.<br data-mce-bogus="1">
</div>
<div>We have a few concerns we would like some help with.<br
data-mce-bogus="1">
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<br>
BNG implementations can sometimes be very vendor-specific (which is
not necessarily a bad thing), because this infrastructure is
extremely involved, with lots of moving parts.<br>
<br>
My advice would be to spend 95% of your time working with your
vendor to get them to provide solutions to your problems. Some of
the things you want to do will be difficult to do in a multi-vendor
BNG scenario. Given how sensitive this kind of infrastructure is,
I'd recommend working with a vendor you're comfortable with.<br>
<br>
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<div><br data-mce-bogus="1">
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<div>1. How can we achieve Geo-redundancy without using
proprietary cisco technology (nV cluster / Geo loacation) if
possible.<br data-mce-bogus="1">
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<br>
Look at PPPoE Smart Server Selection. Not sure of its support in IOS
XR.<br>
<br>
However, I prefer DHCP to PPPoE, so check with Cisco if they have
something similar.<br>
<br>
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<div>2. How can we have users dialing at any of the (2)
locations and still get the same IP address.<br
data-mce-bogus="1">
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<br>
I'd check with Cisco.<br>
<br>
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<div>3. We have the BNGs connected directly to the Core network,
is it okay to have the /32s at the point of entry into the
core(about 5k routes). with this it allows a customer to dial
from any location and pick the same address.<br
data-mce-bogus="1">
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<br>
It's fine, as long as you keep this in your iBGP.<br>
<br>
Pre-assigning an address pool for each BNG scales better, but it
means IP addresses could be different depending on which BNG the
customer connects to.<br>
<br>
<br>
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<div>4. If the third point is not best practice how can we
summarize without introducing other devices.<br
data-mce-bogus="1">
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<br>
As above.<br>
<br>
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<div>5. Any other help is appreciated<br data-mce-bogus="1">
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<br>
If you can, focus on DHCP. PPPoE is old school, and introduces
limitations that could hurt you in the future.<br>
<br>
Mark.<br>
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