Wednesday, September 29, 2010

Traffic Engineering with L2TPv3

As previously I had shared the document that show how to configure MPLS Traffic Engineering with Per VRF , But if we ant to have Traffic Engineering with L2 Circuit the how it can possible ?

Traffic Engineering is possible in most of the scenario & with most of the protocol, But only think is that we need to tweak the old technology with new technology to achieve the requirement.

Here the below document shows that how we can do Traffic Engineering with L2tpv3 aka L2Circuit .

Traffic Engineering with L2TPv3

OSPF Without Area 0

As we know that in OSPF we need to have Area 0 and also aka Backbone Area. But In MPLS Domain the OSPF Backbone Area term had detached.

Instead of having Backbone Area, In MPLS Domain we have some thing known as Super Back Bone. The Service Provider network is Know as Super Backbone area in MPLS Domain, which replace you traditional OPSF backbone Area.

So as per Traditional OSPF design we supposed to have Area 0 but in MPLS domain Super Back bone area is not associated with any area number. So in MPLS domain OSPF can work without Area 0.

Below Document show that how OSPF is configured without Area 0

OSPF Without Area 0

Ethernet over MPLS

EoMPLS, as specified in the draft-martini allows Layer 2 Ethernet frames to be transported across a Multiprotocol Label Switching (MPLS) core network. For the label switch router (LSR) to switch Layer 2 virtual circuits (VC), it must have IP connectivity to transport any Layer 2 attachment services. Thus, the edge LSRs must have the capability to switch Layer 2 VCs.

The EoMPLS can configured as below.
  •  Router to RouterPort Based
  •  Router to RouterVLAN Based
  •  VLAN Rewrite
  •  Switch to SwitchVLAN Based
  •  Switch to SwitchPort Based
  • VLAN Rewrite in Cisco 12000 Series Routers

 The Below link show how to configure Router to Router VLAN Based EoMPLS.