Alcatel Speed Touch Wireless, User Manual

Page: 49 / 362

In this section
IEEE 802.1D
Transparent Bridging
MAC Encapsulated
Routing
PPPoAĆtoĆPPTP
Relaying
4 Data Services - Packet Services
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3EC 17766 AAAA TCZZA Ed. 01
4.2 Packet Services at a Glance
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IEEE 802.1D Transparent Bridging
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MAC Encapsulated Routing
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PPPoAĆtoĆPPTP Relaying
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PPP & IP Routing
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CIP & IP Routing
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Selection Criteria
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Simultaneous Use of Packet Services
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Resumé.
The STWireless IEEE802.1D Transparent Bridging packet service
offers complete protocol transparency and has inherent
configuration simplicity. Yet it provides excellent forwarding
performance.
Next to the Bridge, the STWireless contains an IP router.
The STWireless RFC1483 MAC Encapsulated Routing (MER)
packet service relies on standard IP Routing for its packet
forwarding on the (W)LAN side. However, to the remote access
router on the WAN side, the STWireless presents itself as a
IEEE802.1D Bridge.
That way the remote side can be fooled, i.e. via Network Address
& Port Translation (NAPT), the single public IP address, assigned to
the MAC entity, i.e. the Bridge", can be shared by multiple users
on the local (W)LAN.
In contrast to Transparent Bridging, and MAC Encapsulated
Routing, which both provide an "AlwaysĆOn" type of connection,
PPPoAĆtoĆPPTP Relaying (PPPoA/PPTP ), supports a session concept.
An important advantage of PPPoAĆtoĆPPTP Relaying is that it avoids
the complexity of a network router, yet to a certain extent, provides
identical features.