RSP-440-SE PPPoE Limitation / MOD80

[Tech Support]

Hi 
I'd like to check the limitation of pppoe sessions for RSP-440-SE, can't go over 1582 sessions.

HW setup: 

9006 ASR ( RSP-440-SE+MOD80-TR+2XMPA 4x10G) , subscribers terminated through bundle interface on LC (RSP subscribers).

As per search, the RSP support up to 128k , LC support up 64k ( 32k/NP)

What could cause such limit ?!! and how could be solved 

Another refer

[smailmilak]

Hi,

I see that you have a TR Line Card, and this COULD be the issue even with Bundle Intf. where the sessions are on the RSP (SE).
You could check with TAC as well, or maybe there is an expert here who will reply.

Check this thread

https://community.cisco.com/t5/xr-os-and-platforms/pppoe-subscriber-limit-on-bundle-ethernet/m-p/2523991

So here is the deal, when you configure the bundle, all features are replicated to all npu's that have members in this bundle.

In your design, when you bundle 2 members with one member on a different NPU (or linecard for that matter) will cause you a "scale drop".this because a subscriber will created on both npu's that hold that member of that bundle.

[Tech Support]

Hi Sami

I understand mod80 should be SE type not TR. The limit of 32k per/LC is 100% perfect for me if it's work.
For bundle it's just has 1 member int. The problem the LC not passing 1580 subscriber which is so far from the NPu HW limit.

I think to aggregate the OLTs on SW, then associated with sub-interface on ASR. it might solve the limit ?

[smailmilak]

The problem is that the 32k/LC doesn't apply on a -TR line card, but only on a -SE line card.

This should be check with TAC as well. 

Do you run any other services that could use up resources, such as HQoS, PWHE etc.?

[Tech Support]

So -TR how many sessions can support ?
No HQos or PWHE, simple flat config, resources looks fine, 1 bundle int per 4x tenG MPA. 

[tkarnani]

can we check, show controller np drvlog location 0/x/cpu0
we want to see if there are any errors with regards to scale

[Tech Support]

command is applied, but can't see the file, need to download right 

see attached result.