Juniper MX - Routed pseudowire using LDP - VPWS or VPLS

Mon Mar 19 21:15:48 UTC 2018

Absolutely!  I'm running a eBGP session over this ATM.  We are going to try
to backhaul our customers through a Dell whitebox running IPI OcNOS
configured with an  'LDP fabric' to a core MX.

To use an IRB as a L3 endpoint you have to use VPLS on the MX (Junos
version 15.1R6.7).  I was missing a couple of key commands highlighted in
red:

show configuration interfaces irb.997 | display set
set interfaces irb unit 997 description
VLAN-997->PWHE->POD1-3550-S1_VLAN_997
set interfaces irb unit 997 bandwidth 10g
set interfaces irb unit 997 family inet mtu 9178
set interfaces irb unit 997 family inet address 10.240.16.101/30

show configuration routing-instances VPLS-LAB-0997 | display set
set routing-instances VPLS-LAB-0997 instance-type vpls
set routing-instances VPLS-LAB-0997 vlan-id 997
set routing-instances VPLS-LAB-0997 routing-interface irb.997
set routing-instances VPLS-LAB-0997 protocols vpls encapsulation-type
ethernet-vlan
set routing-instances VPLS-LAB-0997 protocols vpls no-tunnel-services
set routing-instances VPLS-LAB-0997 protocols vpls vpls-id 997
set routing-instances VPLS-LAB-0997 protocols vpls mtu 9100
set routing-instances VPLS-LAB-0997 protocols vpls neighbor 10.240.0.73
set routing-instances VPLS-LAB-0997 protocols vpls connectivity-type irb

show vpls connections extensive
Layer-2 VPN connections:

Legend for connection status (St)
EI -- encapsulation invalid      NC -- interface encapsulation not
CCC/TCC/VPLS
EM -- encapsulation mismatch     WE -- interface and instance encaps not
same
VC-Dn -- Virtual circuit down    NP -- interface hardware not present
CM -- control-word mismatch      -> -- only outbound connection is up
CN -- circuit not provisioned    <- -- only inbound connection is up
OR -- out of range               Up -- operational
OL -- no outgoing label          Dn -- down
LD -- local site signaled down   CF -- call admission control failure
RD -- remote site signaled down  SC -- local and remote site ID collision
LN -- local site not designated  LM -- local site ID not minimum designated
RN -- remote site not designated RM -- remote site ID not minimum designated
XX -- unknown connection status  IL -- no incoming label
MM -- MTU mismatch               MI -- Mesh-Group ID not available
BK -- Backup connection          ST -- Standby connection
PF -- Profile parse failure      PB -- Profile busy
RS -- remote site standby        SN -- Static Neighbor
LB -- Local site not best-site   RB -- Remote site not best-site
VM -- VLAN ID mismatch           HS -- Hot-standby Connection

Legend for interface status
Up -- operational
Dn -- down

Instance: VPLS-LAB-0997
  VPLS-id: 997
    Number of local interfaces: 0
    Number of local interfaces up: 0
    lsi.1048592                   Intf - vpls VPLS-LAB-0997 neighbor
10.240.0.73 vpls-id 997
    Neighbor                  Type  St     Time last up          # Up trans
    10.240.0.73(vpls-id 997)  rmt   Up     Mar 19 10:25:38 2018           1
      Remote PE: 10.240.0.73, Negotiated control-word: No
      Incoming label: 262148, Outgoing label: 52786
      Negotiated PW status TLV: No
      Local interface: lsi.1048592, Status: Up, Encapsulation: VLAN
        Description: Intf - vpls VPLS-LAB-0997 neighbor 10.240.0.73 vpls-id
997
      Flow Label Transmit: No, Flow Label Receive: No
    Connection History:
        Mar 19 10:25:38 2018  status update timer
        Mar 19 10:25:38 2018  PE route changed
        Mar 19 10:25:38 2018  Out lbl Update                     52786
        Mar 19 10:25:38 2018  In lbl Update                     262148
        Mar 19 10:25:38 2018  loc intf up                  lsi.1048592

The other end of my VPLS circuit is a Dell S4048-ON running IP Infusion
OcNOS (it is very Cisco IOS-ish) v1.3.3:

sh run mpls
mpls vpls VPLS-LAB-0997 997
 redundancy-role primary
 signaling ldp
  vpls-type vlan
  vpls-peer 10.240.0.11
  exit-signaling
!
router ldp
 router-id 10.240.0.73
 targeted-peer ipv4 10.240.0.11
  exit-targeted-peer-mode
 transport-address ipv4 10.240.0.73

sh run int xe4
!
interface xe4
 description XE4->POD1-3550-S1_GI0/2
 speed 1g
 switchport
 load-interval 30
 mtu 9100
 mpls-vpls VPLS-LAB-0997 vlan 997
    ac-admin-status up
  exit-if-vpls

And the CE is just a simple L3 VLAN.  We are using an old Cisco 3550
running 12.2(46)SE IPSERVICESK9 that we found laying around:

POD1-3550-S1#sh run int gi0/2
Building configuration...

Current configuration : 219 bytes
!
interface GigabitEthernet0/2
 description GI0/2->POD3-4048-S1_XE4
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 997
 switchport mode trunk
 load-interval 30
 speed nonegotiate
end

POD1-3550-S1#sh run int vlan 997
Building configuration...

Current configuration : 115 bytes
!
interface Vlan997
 description VLAN_997_VLAN-BASED-VPWS-ROUTED-PW
 ip address 10.240.16.102 255.255.255.252
end

Hope this helps.  My head hurts from banging it my desk for the last couple
of weeks.  :)

-ben

On Mon, Mar 19, 2018 at 3:25 PM, Chuck Anderson <cra at wpi.edu> wrote:

> Would you mind sharing the solution(s)?  I've stiched a L2 PW using
> lt-interfaces.
>
> Thanks.
>
> On Mon, Mar 19, 2018 at 11:51:36AM -0500, Ben Bartsch wrote:
> > I want to thank everyone who contacted me on and off list on this
> request.
> > I now have two methods to land a layer 3 endpoint on a layer 2 circuit
> to a
> > remote PE.  I very much appreciate the input, feedback, and assistance.
> I
> > hope I personally get to meet all of you that reached out to me at a
> future
> > NANOG meeting.  Thanks again!
> >
> > -ben
> >
> > On Sat, Mar 17, 2018 at 9:25 AM, Ben Bartsch <uwcableguy at gmail.com>
> wrote:
> >
> > > When we had Cisco ASR 920/903 and  ASR9k, I could attach a layer 2
> > > pseudowire endpoint on that device to a layer 3 BDI/BVI.  I'm trying
> to do
> > > the same thing on a Juniper MX 480/960 and it does not appear to be
> > > supported (for LDP at least - MP-BGP might be supported).  We could do
> > > either VPWS or VPLS on the PE device handoff to the CE (layer 2 only).
> > > JTAC has somewhat confirmed this is not supported for LDP, but they
> only do
> > > break/fix, not new config.  We do not have professional services (we
> are
> > > broke).
> > >
> > > Any Juniper routerheads out there that have seen this done using LDP
> > > without having to hairpin on the MX?
> > >
> > > Thanks, y'all.
> > >
> > > -ben
>