[c-nsp] Strange ASR920 problems with pppoe enabled

Olivier CALVANO o.calvano at gmail.com
Thu Sep 10 03:27:15 EDT 2020


Hi All

I have a problem that I cannot understand on a cisco ASR920.


I have an interface that will do xconnect:

interface GigabitEthernet0/0/8
 mtu 1600
 no ip address
 media-type sfp
 negotiation auto
 service instance 2079 ethernet
  encapsulation dot1q 2079
  rewrite ingress tag pop 1 symmetric
  xconnect 172.16.16.100 2079 encapsulation mpls pw-class EtherRedirect
 !
 service instance 2080 ethernet
  encapsulation dot1q 2080
  rewrite ingress tag pop 1 symmetric
  xconnect 172.16.16.120   901068 encapsulation mpls pw-class EtherRedirect
 !

that works, on the  service instance 2079 ethernet, customer CPE use PPPoE





I have a second interface that i want use with Customer PPPoE:

interface TenGigabitEthernet0/0/14
 no ip address
 channel-group 10 mode active

interface Port-channel10
 no ip address
 lacp max-bundle 3
 service instance 2001 ethernet
  encapsulation dot1q 2001
  bridge-domain 2001

interface BDI2001
 no ip address

If i active pppoe on the BDI2001:
      interface BDI2001
      no ip address
      pppoe enable group CPE-PPPOE


this immediately cuts the PPPoE of my client which goes through the
Xconnect.
I thought the Xconnect was a priority but it doesn't seem to be.
How can I deal with this?

thanks for your help


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