[j-nsp] Difference Between E Series and Rest of the Router Family

[Truman Boyes]

Hi Abhi,

The E-series run JUNOSe which is Juniper's mature broadband edge  
software. Some of the broadband friendly features include the L2TP  
functionality (LAC/LNS/Tunnel Switching), some of the DHCP  
functionality, subscriber management functionality(some with the SRC),  
and the number of queues / CoS behaviour on the number of interfaces  
that the E-series support.

One feature that does not have parity between platforms at this time  
is PPP termination capabilities. Today many service providers are  
PPPoE or PPPoA and the E-series is designed to scale in this regard.

The subscriber management functionality and the QoS features are very  
specific to broadband/customer termination applications. For example,  
the shared shaping functionality, and parameter usage in QoS profiles  
is also very broadband centric.

Another thing is ATCP capabilities that allow QoS mechanisms to take  
into account the actual line speed of a DSL customer in order to  
provide the appropriate congestion avoidance mechanisms.

Regards,
Truman


On 1/08/2008, at 3:53 AM, Abhi wrote:

> Hi All
>
> I have a doubt what is difference from technical perspective between  
> the E Series router family and rest of the routers. What are those  
> unique feature that make them broadband friendly those are missing  
> on the Junos family of devices.
>
> regards
> abhijeet.c
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