The increasing availability of Ethernet-based multipoint service architectures from service providers, for both L2 VPN and 元 VPN services, is resulting in a growing number of enterprises transitioning their WANs to these multipoint services and VPLS is playing an increasingly important role in this transition. As highlighted in Figure 3-1, a VFI is linked (with a 1:1 mapping) to a Switch Virtual Interface (SVI). This is done for all the VLANs that need to be extended across the VPLS domain. The virtual Port Channel (vPC) functionality allows establishing port channel distributed across two devices, allowing redundant yet loop-free topology. Currently, vPC technology is offered on the Nexus 7000 and Nexus 5000 platforms.Ĭompared to traditional STP-based environments, vPC allows redundant paths between a downstream device and its two upstream neighbors. The deployment of these Multi-Chassis EtherChannel (MCEC) connections between the vPC peers and the downstream devices provides the following benefits: With STP, the port channel is a single logical link that allows for building Layer 2 topologies that offer redundant paths without STP blocking redundant links. Removes dependence on STP for link recovery.Doubles effective bandwidth by utilizing all MEC links.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |