Correct Configuation for 7206VXR with PPPoE??

Unanswered Question
Jan 2nd, 2009

I have been tasked with setting up our first PPPoE DSL connection. We have it up and running, but the speeds seem to be rather slow, and would like someone to review the config and see if I am missing something that would improve the overall speed of the pppoe connections. During download tests, we found that we would drop from 12MB(standard ethernet) to 4.5MB (PPPoE). So any help would be appreciated. Here is relevant information:

7206vxr with a NPE-G1 Card

Version: c7200-advipservicesk9_li-mz.124-20.T1

Relevant Configuration information:

bba-group pppoe global

virtual-template 41

sessions per-mac limit 2

interface Loopback41

ip address 192.168.41.1 255.255.255.255

interface GigabitEthernet0/2

no ip address

duplex auto

speed auto

media-type rj45

no negotiation auto

interface GigabitEthernet0/2.2

description DSL-Data Traffic

encapsulation dot1Q 4

pppoe enable group global

interface Virtual-Template41

description New Subnet 41 Behind Occam

mtu 1454

ip unnumbered Loopback41

no ip route-cache cef

no ip route-cache

ip tcp adjust-mss 1414

no logging event link-status

load-interval 30

no peer default ip address

ppp authentication pap

!

I have this problem too.
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Yasir Ashfaque Thu, 03/05/2009 - 07:25

Why is MTU so less, i think 1492 would be ok, also tcp max should be 1452, try to tune those and see if performance increases..

also as described above, enable CEF on the interface

frnkblk Sat, 07/10/2010 - 05:45

We're experiencing somewhat similiar problems -- we're going to compare between PPPoA and PPPoE.  What did you ever find out?

Frank

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