Riverstone Networks WICT1-12 - Manual (Page 149)

Riverstone Networks RS Switch Router User Guide Release 8.0 8-15
ATM Configuration Guide Bridging ATM Traffic
8.5 BRIDGING ATM TRAFFIC
The ATM modules support both flow-based and address-based bridging. Like all the other RS modules, the ATM
modules perform address-based bridging by default, but can be configured to perform flow-based bridging. The ATM
multi-rate line card supports IP-based VLANs, and the ATM OC-12 line card supports IP and IPX-based VLANs. You
can configure an ATM port as an 802.1Q trunk port, enabling it to carry traffic for multiple VLANs. For additional
information on the RS bridging functions, refer to
Section 5, "Bridging Configuration Guide."
Note The ATM modules do not support the Spanning Tree Protocol.
The following example illustrates how you can use bridging and VLANs to accommodate different networking
requirements on an ATM module. In the network diagram, there are two client groups, VLAN A and VLAN B. These
two client groups have very different needs and requirements for their users. VLAN A consists of users who need
access to a high bandwidth connection able to support video conferencing. VLAN B consists of users who require less
bandwidth and are mainly concerned with email and server backup traffic.
There are two separate VLANs in this network, VLAN A and VLAN B. VLAN A is connected to ethernet port et.5.1,
and VLAN B is connected to ethernet port et.6.2.