Layer 2 Vpn Design - Avaya 8800 Planning And Engineering, Network Design

Important:
To support the VRF and IP VPN functionalities used in this design, you must equip the Avaya
Ethernet Routing Switch 8800/8600 with R or RS I/O Modules, 8692 SF/CPU with Super-
Mezzanine daughter card or 8895 SF/CPU, and the Premium Software License.

Layer 2 VPN design

To provide Layer 2 VPN services, native VLANs are created on top of the SMLT design. These
VLANs do not have an IP assigned and can be added or dropped at any site. A suitable range of
VLAN IDs are reserved for these Layer 2 VLANs. In this example, VLAN IDs 2-99 are reserved for
this purpose. As illustrated in the following figure, VLAN ID 12 is spanned across 3 sites. Please
note that any Layer 2 VLANs that are added to this design must always be configured on both main
sites 1 and 2 (the SMLT IST cluster) but only on the Avaya Ethernet Routing Switch 8800/8600
SMLT edge switches that require the VLANs. In this example, VLAN 12 is added to the SMLT IST
cluster switches at sites 1 and 2 and then added at Sites 3 and 5. At sites 2, 3 and 5, Layer 2 VLAN
12 is also configured on one or more edge facing interfaces.
Figure 124: Layer 2 VPN example: VLAN ID 12 dropped off at sites 2, 3, and 5
As part of best design guidelines, do not use VLAN ID 1 (the default VLAN).
June 2016 Planning and Engineering — Network Design
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