[c-nsp] NPE-400 vs. NSE-1 for ATM-DSL aggregation

[Matthew Crocker]

>> Any suggestions on which would be the better replacement engine in  
>> this
>> scenario?  Yes, I know about the 1G, but OSI layer 8 (the financial  
>> layer)
>> is having compatibility issues with that solution.
>

Layer 8 may have a problem with a switch in platform but I have to go  
with Andy on this.  The Redback SMS is an AWESOME box.  We started with  
a 7507, VIP4-50, RSP4s to handle our PPPoE sessions.  Ya, I know it  
isn't built to handle that but it was all I had.  At about 75 customers  
the router completely melted.  We switched to a SMS 1800, CE3,FE3 and  
haven't looked back.

The SMS has two processing blades the CE handles the radius requests,  
router management and the FE which handles the PPPoE terminations, IP  
traffic and such.  Redback says a 1800 with CE3/FE3 can handle 8-10k  
PPPoE sessions.

Check eBay you can get SMSs pretty cheap.  I HIGHLY recommend you send  
it into Redback to get it recertified and get a support contract.

Our current stats

[local]redback1#show process cpu
THU SEP 16 19:02:08 2004
CPU Utilization for 5 seconds: 3%   1 Minute: 2%   5 Minutes: 1%

[local]redback1#show subscribers summary all
THU SEP 16 19:03:23 2004
    
------------------------------------------------------------------------ 
----
Total=528 (ppp=528  r-1483=0  b-1483=0  r-1490=0  b-1490=0
         m-1483=0 m-1490=0 d-enet=0 d-1483=0 d-1490=0 clips=0)

[local]redback1#show memory fe
THU SEP 16 19:06:38 2004
         Free Bytes  Bytes in Use  Blocks In Use  Cumul. Blocks  %Thresh
         ----------  ------------  -------------  -------------- -------
  FE     43,590,720     5,061,568            856            856   10%
[local]redback1#show mem
[local]redback1#show memory ce
THU SEP 16 19:06:46 2004
         Free Bytes  Bytes in Use  Blocks In Use  Cumul. Blocks  %Thresh
         ----------  ------------  -------------  -------------- -------
  CE     94,630,092    17,289,728         80,131      7,692,871   15%


> Jay,
>
> You might consider just switching to Redback for your DSL aggregation.
> The SMS series are built specifically to terminate a ton of PPPoE
> sessions.
>
> We use one, and are very happy with it. From a box with 250 currently
> active users (SMS-1800):
>
> CPU Utilization for 5 seconds: 2%   1 Minute: 1%   5 Minutes: 0%
>
> We went redback from the start with DSL, after hearing several direct
> accounts of colleagues switching from cisco to redback for DSL agg.
>
> I'm fairly certain this will be much more pallatable on L8 as well. ;)
>
> Free up the VXR to route packets. Let a PPPoE box do the PPPoE.
>
> Andy
>
> ---
> Andy Dills
> Xecunet, Inc.
> www.xecu.net
> 301-682-9972
> ---
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