Brocade Network Advisor SAN + IP User Manual v12.3.0 - Manual (Page 1574)

1502 Brocade Network Advisor SAN + IP User Manual
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Virtual Private LAN Services (VPLS) overview
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5. Click the Get button to begin the search.
VLLs that match the filter criteria display under VLL Instances.
NOTE
If a VLL is from a device that is not covered by the MPLS license, the row is grayed out. You will
not be able to edit that VLL, but you can delete it from the device.
The VLL Instances table shows the following information:
- VCID of the VLL
- Name of the VLL
- A Endpoint - Name and IP address of the device that serves as the first endpoint for the
VLL
- In Packets - Number of packets received by the A Endpoint. This data is not available in the
NetIron CER and NetIron CES
- Z Endpoint - Name and IP address of the device that serves as the last endpoint for the
VLL
- In Packets - Number of packets transmitted through the Z Endpoint. This data is not
available in the NetIron CER and NetIron CES.
Virtual Private LAN Services (VPLS) overview
Virtual Private LAN Services (VPLS) is a method for carrying Layer 2 frames between customer edge
(CE) devices across an MPLS domain. VPLS provides point-to-multipoint connectivity across the
MPLS domain, allowing traffic to flow between remotely connected sites as if the sites were
connected by a Layer 2 switch.
Figure 688 shows two separate VPLS instances have been created, one for Customer A’s VPN and
one for Customer B’s VPN. Customer A's VPLS instance consists of virtual Circuit (VC) LSPs
between PE devices R1, R2, and R3. Customer B’s VPLS instance consists of VC LSPs between PE
devices R3 and R4. Since VC LSPs are unidirectional, separate VC LSPs exist in each direction
between each of the PE devices. When Label Distribution Protocol (LDP) is enabled on the MPLS
interfaces on the PE devices, the VC LSPs are established automatically through LDP when you
specify the VPLS peers on the PE devices.