12-10CHAPTER 12: ATM, LAN EMULATION, AND VIRTUAL LANS

Table 12-3LEC Configuration and Status Information (continued)

ATM Address

ATM address of the LES provided by the LECS during the configuration phase or

 

manually assigned using the LES address option of the LE configuration menu or in Fast

 

Setup.

 

 

Control-direct VCC

VPI/VCI values of the control-direct VCC originated by the LEC to the LES.

 

 

Control-distribute VCC

VPI/VCI values of the control-distribute VCC originated by the LES to the LEC.

 

 

BUS Information

Description

 

 

ATM Address

ATM address of the BUS provided by the LES during initialization.

 

 

Multicast-send VCC

VPI/VCI values of the multicast-send VCC originated by the LEC to the BUS.

 

 

Multicast-forward VCC

VPI/VCI values of the multicast-forward VCC originated by the BUS to the LEC.

 

 

Bridges in the 7600

In the 7600 Card a LEC is attached to each Ethernet transparent bridge

Card

which is set up in the device. The LEC connects the bridged-LAN

 

environment attached to the transparent bridge to the ATM network and

 

forwards LAN data frames over VCCs across the ATM network to the

 

destination LANs. From the viewpoint of a LAN user, the LEC acts

 

together with the transparent bridge to which it is attached to form a

 

combined bridge through which the LAN user can now efficiently reach

 

both local and remote destination LANs in the ATM network.

 

The physical connection of the transparent bridge to the ATM network is

 

through an internal ATM port. The connection to the ATM port is

 

specified when the bridge is set up. If no ATM connection is specified, the

 

bridge acts like a standard transparent bridge.

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3Com 7600 manual Bridges, Both local and remote destination LANs in the ATM network