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6 votes
Accepted

Differences between MPLS and VPLS

MPLS is a virtual "layer 3" network. The customer addresses packets by IP. The PE equipment have customer IPs and serve as customer routers. The MPLS admin needs to manage at least a little of the ...
Law29's user avatar
  • 406
5 votes
Accepted

STP frames over VPLS/VPWS

Normally yes, VPLS and VPWS should be transparent to all L2 frames. BPDUs might not be supported by all providers, so you'd want to check the SLA. Alternatively, you should consider routing your ...
Zac67's user avatar
  • 84.9k
5 votes
Accepted

Transporting an Ethernet Port in a LDP Based VPLS Instance on Juniper MX routers

Yes, LDP VPLS is a pretty standard deployment. Where it can get confusing is the various types of PE-CE interface encapsulation depending upon the type of service you're running. In your case of a ...
Jordan Head's user avatar
  • 7,099
5 votes
Accepted

SONET/T-Carrier differences - MPLS/VPLS bandwidth

Very briefly, SONET/SDH is a high bandwidth optical WAN technology. T-carrier is an electrical (digital) WAN technology. SONET/SDH is (was) typically used for backbone and inter-provider circuits. ...
Ron Trunk's user avatar
  • 67.6k
4 votes
Accepted

LDP based VPLS between Cisco IOS XE and Juniper MX

No outgoing label indicates that Junos doesn't have a label for the loopback you are targeting on the Cisco (your x.x.x.x address) Confirm the following: Your NNI interface from the Juniper has ...
Benjamin Dale's user avatar
3 votes
Accepted

VPLS split-horizon behaviour

You are pretty right. In case if PE1 receives a broadcast from any other PE (say PE-2) which is a part of same VPLS domain (i..e LDP peer configured) , it doesn't replicate because this is the job ...
Nabeel's user avatar
  • 1,120
3 votes
Accepted

Brocade L2VPN Route Reflector

I notice you have configured cluster-id 1. You should configure a unique cluster-id for each router in your topology, because you do not appear to have elected one or more centrally-located RRs. In ...
Jeff Wheeler's user avatar
  • 5,478
3 votes
Accepted

Extending a subnet across a WAN link vs routing

L2 bridging is not a good approach for a network extended over WAN. L2 protocols are ill-suited for bandwidth-limited and high-latency connections. Bridging a gigabit network over something like 10 ...
Zac67's user avatar
  • 84.9k
2 votes
Accepted

Junos[MX]: How to show VPLS instance associated with given subinterface

There is no direct way, but you can see interfaces in the statistics: user@router> show vpls statistics [..] Instance: EXAMPLE-VPLS-INSTANCE Local interface: ae2.2000, Index: 380 [..] Or in ...
Sebastian Wiesinger's user avatar
2 votes

Juniper MX - vlan-ccc double tagged to untagged

You should be able to do something like: protocols { l2circuit { neighbor xxx.xxx.xxx.xxx { interface xe-0/0/3.1158 { virtual-circuit-id 1158; ...
Benjamin Dale's user avatar
2 votes
Accepted

VPLS connection

R2 doesn't have a route to 11.11.11.0, so it doesn't know where to send the echo reply. Add a route with the next hop on 10.10.10.1.
Ron Trunk's user avatar
  • 67.6k
2 votes

Differences between MPLS and VPLS

As I understand it (having read a bit on this but not actually done it). MPLS is a protocol for building large numbers of virtual links over a shared infrastructure. The system of layered labels ...
Peter Green's user avatar
  • 13.3k
2 votes
Accepted

Vlan Extension vs VPLS + need understanding

There are many ways to extend VLANs. Trunks are just one way. VPLS is another. The best method to use depends on several factors, most notably, the type of media that link the two locations, the ...
Ron Trunk's user avatar
  • 67.6k
2 votes
Accepted

Pros and cons of using VPLS instead of using MPLS alone

You really can't compare the pros and cons. These are different (but related) technologies and they have been developed for a particular problem. You might as well ask what are the pros and cons of ...
Ron Trunk's user avatar
  • 67.6k
2 votes

PE route down in LDP based VPLS Connection in Juniper MX

The VC will go down if the interface (in your case ge-2/1/5 goes down), so run show interfaces ge-2/1/5 and confirm the Last Flapped: time against your log entries.
Benjamin Dale's user avatar
2 votes

VPLS how to signal CE facing interface failure

@Radovan. I'll try to answer this by assuming both PE-1 and PE-5 are Juniper Nodes. In Case of Juniper , you can use 'site-preference' knob under VPLS routing-instance. In your case CE is dual homed ...
Nabeel's user avatar
  • 1,120
2 votes

H-VPLS application with different types of VPLS

@Radovan. Refernece to your question "Is H-VPLS applicable for every type of VPLS network? (any other than LDP-based VPLS as in RFC 4762)" , I think H-VPLS was a fix to lessen extensive LDP peering ...
Nabeel's user avatar
  • 1,120
1 vote

VPLS without route target and VPLS ID

Route targets don't help PE routers find each other. And PE routers actually don't need to find each other, it's the BGP service they're running that has to find its peer to establish a BGP session. ...
manish ma's user avatar
  • 1,624
1 vote

Junos[MX]: How to show VPLS instance associated with given subinterface

Try this command show vpls connections instance <instance-name> extensive to view the interfaces associated with the VPLS instance . Additional Info >> To check the MAC table , use the command ...
Nabeel's user avatar
  • 1,120

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