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NIM config ISR4300 UK BT VPLS service over FTTC

iswift
Level 1
Level 1

Hi

Have a VPLS service (a Layer 2  virtual-cct) from BT in the UK.

It is an FTTC presentation over a PSTN line, not the usual Ethernet presentation.

Looked at various articles and the usual story, no exact fit for our case and facts in one article seem slightly at odds with what it says in another.

http://www.cisco.com/c/en/us/td/docs/routers/access/interfaces/NIM/software/configuration/guide/vdsl2-and-adsl2-nim.html#concept_C76827E4B2B343379FC901F654CD3438

is the best fit, and it says :-

"  All other upper layer parameters such as PPP, IP, and so on should be configured under the Ethernet interface. "

So I'm thinking we don't need a Dialer interface - especially as ppp it says is configured under the (virtual) Ethernet interface.

The CCO thread says you do use a Dialer :-

https://supportforums.cisco.com/discussion/10388831/problem-pppoe-enable-group-global

This is another good CCO doc and on p.50 the Multilink PPP example is the best I can see for a VDSL (Ethernet) example.

https://supportforums.cisco.com/sites/default/files/configuration_guide_to_vdsl2_and_adsl2plus_nim.pdf

In our case it is a private connection in a closed user group.

The BT default vlan id is configured, 4094.

We use a static IP as there is no negotiation with the carrier (they provide VPLS as a L2 service, remember) and we control the IP schema.

So I'm not clear if I need either of the following ;

== without Dialer ==

int eth 0/1/0.4094
 enc dot1q 4094
 pppoe enable
 encap ppp
 ip address a.a.a.a n.n.n.n
 no shut


== with Dialer == 

int eth 0/1/0.4094
 enc dot1q 4094
 pppoe enable
 ! or if not, try pppoe enable group global
 pppoe-client dial-pool-number 1
 no shut
!

int dialer 1
 encap ppp
 ip address a.a.a.a n.n.n.n
 dialer pool 1
 dialer-group 1
 no shut

Ian

1 Reply 1

iswift
Level 1
Level 1

And the controller vdsl 0 has

operating mode auto (the default), and

modem ukfeature

Modem Status:           TC Sync (Showtime!)

DSL Config Mode:        AUTO

Trained Mode:           G.993.2 (VDSL2) Profile 17a

 

TC Mode:                PTM

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