Vlans In A Corebuilder 7600 Card - 3Com CoreBuilder 7000 Operation Manual

VLANs in the CoreBuilder 7000 189
VLANs in a As an example, this section discusses how VLANs are defined in the
CoreBuilder 7600 CoreBuilder 7600 Fast Ethernet interface card of the CoreBuilder 7000
Card family ATM switch.
Connecting Ethernet Segments to a VLAN
A VLAN will usually contain some local Ethernet segments physically
connected to the 7600 Card as well as remote segments located in
different parts of the ATM network. Logically, the connection of the local
Ethernet segments into a VLAN proceeds in two steps: first, they are
formed into a local bridged-LAN environment by connecting them to a
local bridge and then the local bridged-LAN environment is connected to
remote bridged-LAN environments in the same VLAN by means of the
LES of the ELAN which resides in the CoreBuilder switch card.
Figure 56 shows how two such VLANs, for example Engineering and
Finance, might be connected on the ATM network. Each VLAN has a
separate ELAN (ELAN 1 and ELAN 2) which establish the data-direct VCCs
on which members of the VLAN communicate. Figure 57 shows how a
VLAN is based on an ELAN.