Pwe3 Features Supported By The S9300 - Huawei Quidway S9300 Configuration Manual
Terabit routing switch
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Also See for Quidway S9300:
- Configuration manual - network management (630 pages) ,
- Configuration manual (603 pages) ,
- Configuration manual - multicast (262 pages)
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5 PWE3 Configuration
5.2 PWE3 Features Supported by the S9300
This section describes the PWE3 features supported by the S9300.
You need to be familiar with the following terms defined in the RFC before you read this section:
l
l
PWs can be classified into the following types:
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l
Static PW and Dynamic PW
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Dynamic PW labels are distributed in the outbound and inbound directions.
5-4
Ultimate PE (U-PE): a PE to which an AC is bound. An AC is directly connected to a U-
PE. The U-PE is the first or last PE of a multi-hop PW.
Switching Point PE (S-PE): a PE in charge of switching PW labels on a backbone network.
Static PW and Dynamic PW
SH-PW and MH-PW
Static PW
The static PW negotiates parameters without using the signaling protocol. You must specify
the relevant information manually. Data is transmitted between PEs through a tunnel.
Dynamic PW
The dynamic PW tunnels refer to the PW tunnels that are set up through a signaling protocol.
The U-PEs exchange VC labels through LDP and are bound to the corresponding CEs based
on the VC ID. If the tunnel between the two PEs is successfully set up and label switching
and binding are complete, a VC is set up.
The messages used on a dynamic PW are as follows:
Request: a message used to request the peer to distribute labels.
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Mapping: a message used to distribute labels to the remote PE. The state bit can be
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carried by this message to the remote PE. Whether to carry the state bit is up to
configuration. By default, the state bit is not carried in Martini mode.
Notification: advertises and negotiates the PW status to reduce the number of messages
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to be exchanged.
Withdraw: a message used to request the peer to delete labels. (It carries labels and state
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information.)
Release: a message as a response for Withdraw. It is used to notify the remote end that
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the label is deleted.
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Quidway S9300 Terabit Routing Switch
Configuration Guide - VPN
Issue 03 (2009-08-20)
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