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NE20E-S V800R010C10SPC500 Feature Description - VPN 01

This is NE20E-S V800R010C10SPC500 Feature Description - VPN
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Hard-Pipe-based TE LSP

Hard-Pipe-based TE LSP

Principles

After the hard pipe bandwidth is reserved on a physical interface on a carrier network, the logical hard network is partitioned. Then path planning is required for services provisioned to users. P2P leased line services are carried over static bidirectional co-routed TE LSPs between two PEs.

After a carrier determines the PE for user access on the NMS, the network transmission paths can be manually specified or automatically generated. When the NMS automatically plans paths, hard pipe bandwidth is reserved hop by hop on the transmission path based on the user access bandwidth. If the hard pipe bandwidth of all links on the transmission path meets the user access service requirements, a hard-pipe-based TE LSP is established between the PEs. The NMS then updates the bandwidth resource database. This implements hard pipe services over the TE LSP.

DiffServ Model

TE LSPs use the DiffServ pipe mode. When the hard pipe attribute is configured, DiffServ is switched to enhanced pipe mode automatically. The commands for configuring hard pipe attributes and Pipe/Short-pipe in diffserv mode are mutually exclusive. Therefore, you cannot manually change the DiffServ mode for TE LSPs.

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Updated: 2019-01-03

Document ID: EDOC1100055135

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