PPPoE client on BDI (ASR1K)

[CyberNBD]

I currently have a PPPoE Client connection on a subinterface, which works fine, but since I need to tie in another interace to it, I would like to change it to a BDI. 

Changed the configuration but the PPPoE client won't come up again.  Checked config with this guide https://www.cisco.com/c/dam/en/us/td/docs/routers/asr920/configuration/guide/bbdsl/16-6-1/bba-xe-16-6-1-asr-920.html and also tried switching config from dialer to vt.  No luck on both.

Sub-interface config, which is working fine:

interface GigabitEthernet0/0/3.6
 description INTERNET VLAN
 encapsulation dot1Q 6
 ip tcp adjust-mss 1448
 pppoe enable group global
 pppoe-client dial-pool-number 1
!

interface Dialer1
 ip address negotiated
 encapsulation ppp
 dialer pool 1
 dialer-group 1
 ppp authentication pap callin
 ppp pap sent-username 1234 password 0 1234
 ip virtual-reassembly
!

BDI Config and PPPoE not coming up:

interface GigabitEthernet0/0/3
 description UPLINK
 no ip address
 no negotiation auto
 service instance 6 ethernet
  description INTERNET VLAN
  encapsulation dot1q 6
  rewrite ingress tag pop 1 symmetric
  l2protocol peer stp
  bridge-domain 6
 !
!

interface Dialer1
 ip address negotiated
 encapsulation ppp
 dialer pool 1
 dialer-group 1
 no cdp enable
 ppp authentication pap callin
 ppp pap sent-username 1234 password 0 1234
!

interface bdi6
 pppoe enable group global
 pppoe-client dial-pool-number 1
!

What could I be missing here?

[M02@rt37]

Hello @CyberNBD 

Do you have any logs related to the PPPoE connection ?

[CyberNBD]

Hi,

the only thing that shows up in PPPoE debug every 30s or so is:

*Dec 26 15:43:16.164:  padi timer expired
*Dec 26 15:43:16.164:  Sending PADI: Interface = BDI6
*Dec 26 15:43:16.164: pppoe_send_padi:
contiguous pak, size 60
         FF FF FF FF FF FF F4 0F 1B 39 BD 3F 88 63 11 09
         00 00 00 10 01 01 00 00 01 03 00 08 9F 00 00 02
         00 00 24 7E 00 00 00 00 00 00 00 00 00 00 00 00
         00 00 00 00 00 00 00 00 00 00 00 00

[MHM Cisco World]

Try add 

pppoe enable group global
 pppoe-client dial-pool-number

 Under service instance of interface not under BDI

MHM

[CyberNBD]

If I put it under the service instance it gets put under the parent interface (0/0/3) and I get the same error messages:

*Dec 26 16:16:34.581:  padi timer expired
*Dec 26 16:16:34.581:  Sending PADI: Interface = GigabitEthernet0/0/3
*Dec 26 16:16:34.581: pppoe_send_padi:
contiguous pak, size 60
         FF FF FF FF FF FF F4 0F 1B 39 BD 03 88 63 11 09
         00 00 00 10 01 01 00 00 01 03 00 08 5E 00 00 06
         00 00 03 DD 00 00 00 00 00 00 00 00 00 00 00 00
         00 00 00 00 00 00 00 00 00 00 00 00

[MHM Cisco World]

When you use subinterface the pppoe send using vlan tag 6 but with service instance you use pop i.e. the tag is remove

This make pppoe server dont know the traffic.

Remove the rewrite and check 

MHM

[CyberNBD]

Removed the "rewrite ingress tag pop 1 symmetric" on the service instance 6 but still same thing.  Also tried enabling PPPoE on the BDI again.

[MHM Cisco World]

OMG we miss important thing'

pppoe enable <- this for client 

pppoe enable group global<- this for server

So since you want router to be pppoe client  then only use first abd dial-pool-num 

Note:-check vlan tag as I mention above 

MHM

[CyberNBD]

No luck again   Config at this point:

interface GigabitEthernet0/0/3
 description UPLINK
 no ip address
 no negotiation auto
 pppoe enable
 pppoe-client dial-pool-number 1
 service instance 6 ethernet
  description INTERNET VLAN
  encapsulation dot1q 6
  l2protocol peer stp
  bridge-domain 6
 !
!
interface BDI6
 no ip address
!

and also tried putting it under the BDI again:

interface GigabitEthernet0/0/3
 description UPLINK
 no ip address
 no negotiation auto
 service instance 6 ethernet
  description INTERNET VLAN
  encapsulation dot1q 6
  l2protocol peer stp
  bridge-domain 6
 !
!
interface BDI6
 no ip address
 pppoe enable
 pppoe-client dial-pool-number 1
!

Dialer 1 config remains unchanged from original post.

[MHM Cisco World]

Can you share 

Show ethernet service instance detial 

Show interface bdi 6

MHM

[CyberNBD]

Show ethernet service instance detail:

Service Instance ID: 82
Service Instance Type: Static
Description: PUBIP
Associated Interface: GigabitEthernet0/0/0
Associated EVC:
L2protocol peer stp
CE-Vlans:
Encapsulation: dot1q 82 vlan protocol type 0x8100
Rewrite: ingress tag pop 1 symmetric
Interface Dot1q Tunnel Ethertype: 0x8100
State: Up
EFP Statistics:
   Pkts In   Bytes In   Pkts Out  Bytes Out
    466155   35695235     158112   15563249
EFP Microblocks:
****************
Microblock type: Bridge-domain
Bridge-domain: 82

Microblock type: L2Mcast
L2 Multicast GID: 1

Microblock type: dhcp_snoop
L2 Multicast GID: 1


Service Instance ID: 82
Service Instance Type: Static
Description: PUBIP
Associated Interface: GigabitEthernet0/0/1
Associated EVC:
L2protocol peer stp
CE-Vlans:
Encapsulation: dot1q 82 vlan protocol type 0x8100
Rewrite: ingress tag pop 1 symmetric
Interface Dot1q Tunnel Ethertype: 0x8100
State: Up
EFP Statistics:
   Pkts In   Bytes In   Pkts Out  Bytes Out
    532557   45622600          0          0
EFP Microblocks:
****************
Microblock type: Bridge-domain
Bridge-domain: 82

Microblock type: L2Mcast
L2 Multicast GID: 2

Microblock type: dhcp_snoop
L2 Multicast GID: 2


Service Instance ID: 4
Service Instance Type: Static
Description: TV VLAN
Associated Interface: GigabitEthernet0/0/3
Associated EVC:
L2protocol peer stp
CE-Vlans:
Encapsulation: dot1q 4 vlan protocol type 0x8100
Rewrite: ingress tag pop 1 symmetric
Interface Dot1q Tunnel Ethertype: 0x8100
State: Up
EFP Statistics:
   Pkts In   Bytes In   Pkts Out  Bytes Out
      1374      89004       1374      83360
EFP Microblocks:
****************
Microblock type: Bridge-domain
Bridge-domain: 4

Microblock type: L2Mcast
L2 Multicast GID: 1

Microblock type: dhcp_snoop
L2 Multicast GID: 1


Service Instance ID: 6
Service Instance Type: Static
Description: INTERNET VLAN
Associated Interface: GigabitEthernet0/0/3
Associated EVC:
L2protocol peer stp
CE-Vlans:
Encapsulation: dot1q 6 vlan protocol type 0x8100
Interface Dot1q Tunnel Ethertype: 0x8100
State: Up
EFP Statistics:
   Pkts In   Bytes In   Pkts Out  Bytes Out
         0          0          0          0
EFP Microblocks:
****************
Microblock type: Bridge-domain
Bridge-domain: 6

Microblock type: L2Mcast
L2 Multicast GID: 1

Microblock type: dhcp_snoop
L2 Multicast GID: 1


Service Instance ID: 4
Service Instance Type: Static
Description: TV VLAN
Associated Interface: GigabitEthernet0/1/0
Associated EVC:
L2protocol peer stp
CE-Vlans:
Encapsulation: dot1q 4 vlan protocol type 0x8100
Rewrite: ingress tag pop 1 symmetric
Interface Dot1q Tunnel Ethertype: 0x8100
State: Up
EFP Statistics:
   Pkts In   Bytes In   Pkts Out  Bytes Out
      1374      83360       1374      89004
EFP Microblocks:
****************
Microblock type: Bridge-domain
Bridge-domain: 4

Microblock type: L2Mcast
L2 Multicast GID: 2

Microblock type: dhcp_snoop
L2 Multicast GID: 2

Show interface bdi 6:

BDI6 is up, line protocol is up
  Hardware is BDI, address is f40f.1b39.bd3f (bia f40f.1b39.bd3f)
  MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive not supported
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input never, output 00:00:18, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/375/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     0 packets input, 0 bytes, 0 no buffer
     Received 0 broadcasts (0 IP multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     30 packets output, 1834 bytes, 0 underruns
     0 output errors, 0 interface resets
     0 unknown protocol drops
     0 output buffer failures, 0 output buffers swapped out

[MHM Cisco World]

Service Instance ID: 6
Service Instance Type: Static
Description: INTERNET VLAN
Associated Interface: GigabitEthernet0/0/3
Associated EVC:
L2protocol peer stp
CE-Vlans:
Encapsulation: dot1q 6 vlan protocol type 0x8100
Interface Dot1q Tunnel Ethertype: 0x8100
State: Up
EFP Statistics:
   Pkts In   Bytes In   Pkts Out  Bytes Out
         0          0          0          0

there is no packet Out or In in this service instance 
are the port g0/0/3 is UP/UP?
MHM

[CyberNBD]

Yeah I noticed that too.  gi0/0/3 is UP/UP