[afnog] Bridged Access Network

[Seun Ojedeji]

Okay Vin,

On Wed, Oct 9, 2013 at 10:11 AM, Vincent Mwamba <davince01 at gmail.com> wrote:

> Hi Seun,
>
> We have Layer 3 devices at each customer premises with static IPs from a
> pool assigned to a service e.g a /24 static pool. But we do get customers
> who plug their links into a switch at their end.
>
> Hmm....so if i get this correctly, you assign say 192.168.4.0/24 to a
customer, who then plug in into a switch and assigns static to all its
users (or dhcp as the case maybe) and this the activity (including
broadcast) by those users gets to you.

Yeah thats the normal and expected behaviour. A first thing to do is to
limit the subnet you are assigning to customers to say /30 or /28 max. The
prefix you assign to the customer would only be a broadcast within the
customer end since broadcasts are within subnets. I presume you have a/some
routing protocol(s) running at your say distribution and definitely at the
core.

On a lighter note, if you have layer 3 devices at your customer premises,
then you just need to run a few more layer 3 at the pops (high ends
connecting to other sites). Even with the current setup, i am still
wondering how you receive broadcast storm from the customer since they have
their subnets? Perhaps the broadcasts is coming from devices directly
connected on the switch at the pops(high ends)

Cheers!


> Thanks
>
> ./Vinny
>
>
> On Wed, Oct 9, 2013 at 10:51 AM, Seun Ojedeji <seun.ojedeji at gmail.com>wrote:
>
>> Hello Vin,
>>
>> On Wed, Oct 9, 2013 at 9:31 AM, Vincent Mwamba <davince01 at gmail.com>wrote:
>>
>>> <<snip>>
>>>
>>
>>
>>>  The customer traffic from each high site is carried over our layer 2
>>> access back to a single aggregation router.
>>>
>>
>> Wow! looks like too much to chew for the poor single router. Which seem
>> to be the only layer 3 device.
>>
>>
>>> Some High sites are aggregation points for more remote sites and for
>>> redundancy links, which has caused us spanning tree issues in the past.
>>>
>>
>> The hard fact is you need to spend a few coins and get layer 3 devices
>> for the High sites. Especially those that are pop to other sites
>>
>>>
>>> What is the best way to grow the flat network and avoid spanning tree
>>> headaches.
>>>
>>
>> I say try as much as possible to avoid spanning tree (if you can), also
>> try to reduce switching as much as possible at your core.
>>
>>
>>> What is the best practice to provision the various services we offering
>>> to our customers and avoid broadcasts?
>>>
>>
>> Could you explain what a typical customer end looks like i.e do they
>> connect by pppoe, dhcp or static IPs/ have you got a layer 3 device at each
>> customer premises?
>>
>>
>>> How are other ISP doing it?
>>>
>>>  N/A ;-)
>>
>> Cheers!
>>
>>> Thanks
>>>
>>> ./Vinny
>>>
>>>
>>> _______________________________________________
>>> afnog mailing list
>>> http://afnog.org/mailman/listinfo/afnog
>>>
>>
>>
>>
>> --
>> ------------------------------------------------------------------------
>>
>> *Seun Ojedeji,
>> Federal University Oye-Ekiti
>> web:      http://www.fuoye.edu.ng
>> Mobile: +2348035233535
>> **alt email: <http://goog_1872880453>seun.ojedeji at fuoye.edu.ng*
>>
>>
>>
>
>
> --
> *$$= *Vincent Mwamba
>
> *Mobile:*    +260979458807
>
> *Skype: *    davince24
>
> ~ ~ ~
> - imiti ikula e mpanga
>



-- 
------------------------------------------------------------------------

*Seun Ojedeji,
Federal University Oye-Ekiti
web:      http://www.fuoye.edu.ng
Mobile: +2348035233535
**alt email: <http://goog_1872880453>seun.ojedeji at fuoye.edu.ng*
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