[j-nsp] layer 2 sp services

[Aaron Gould]

My gosh, the layer 2 service provider topic is pretty extensive.  I'm trying
to learn about all of these.

 

I think I have rfc's and terminology correct. but maybe not. correct me
where needed.

 

- BGP L2VPN VPWS RFC 6624 BGP AD BGP SIG PP draft-kompella

- BGP L2VPN VPWS RFC 6074 BGP AD LDP SIG PP FEC 129

- BGP L2VPN VPLS RFC 4761 BGP AD BGP SIG MP

- BGP L2VPN VPLS RFC 4762 BGP AD LDP SIG MP

- Martini        RFC 4447  no AD LDP SIG PP

- EVPN      - don't know much here yet                            

- VXLAN     - don't know much here yet

 

I'm pretty sure I use Martini/rfc4447 (l2circuits) and BGP/LDP vpls rfc 4762
extensively in my network (routing-instance . instance-type vpls rd/rt,
etc).but some of these other ones I don't think I'd ever really use. like
this one that I'm currently learning about. rfc6624/kompella. nope, I don't
think I would use this one.  Do y'all use kompella ?

 

About kompella/rfc6624, I want to make sure I understand the NLRI thing as
far as knowing how to compute the incoming label and outgoing label for a
certain p-to-p pw to a remote site.

 

I this correct ? ---->   label base local + remote-site-id -
label-offset-local = label value

 

Maybe it's like this.

800006+15-15=800006 (in label)

800002+23-23=800002 (out label)

 

I need to know how did the Local Label Base get calculated ?  where did
800002 and 800006 come from ?

 

Also, does the Offset always equal the remote site id ?

 

.lab output. 

----------------------------------------------------------------------------
----

Instance: vpn-a

Edge protection: Not-Primary

  Local site: CE-A (23)

    Number of local interfaces: 1

    Number of local interfaces up: 1

    lt-0/1/0.11         15

    Label-base        Offset     Size  Range     Preference

    800006            15         2      1         100

      status-vector:  0

    connection-site           Type  St     Time last up          # Up trans

    15                        rmt   Up     Jul 27 23:53:36 2017           1

      Remote PE: 1.1.255.1, Negotiated control-word: Yes (Null)

      Incoming label: 800006, Outgoing label: 800002

      Local interface: lt-0/1/0.11, Status: Up, Encapsulation: VLAN

      Flow Label Transmit: No, Flow Label Receive: No

    Connection History:

        Jul 27 23:53:36 2017  status update timer

        Jul 27 23:53:36 2017  PE route changed

        Jul 27 23:53:36 2017  Out lbl Update                    800002

        Jul 27 23:53:36 2017  In lbl Update                     800006

        Jul 27 23:53:36 2017  loc intf up                  lt-0/1/0.11

----------------------------------------------------------------------------
----

Instance: vpn-a

Edge protection: Not-Primary

  Local site: CE-A (15)

    Number of local interfaces: 1

    Number of local interfaces up: 1

    lt-0/1/0.2          23

    Label-base        Offset     Size  Range     Preference

    800002            23         2      1         100

      status-vector:  0

    connection-site           Type  St     Time last up          # Up trans

    23                        rmt   Up     Jul 27 23:53:36 2017           1

      Remote PE: 1.1.255.4, Negotiated control-word: Yes (Null)

      Incoming label: 800002, Outgoing label: 800006

      Local interface: lt-0/1/0.2, Status: Up, Encapsulation: VLAN

      Flow Label Transmit: No, Flow Label Receive: No

    Connection History:

        Jul 27 23:53:36 2017  status update timer

        Jul 27 23:53:36 2017  PE route changed

        Jul 27 23:53:36 2017  Out lbl Update                    800006

        Jul 27 23:53:36 2017  In lbl Update                     800002

        Jul 27 23:53:36 2017  loc intf up                   lt-0/1/0.2

 

 

- Aaron Gould