Dell PowerConnect J-EX4200-24T Software Manual page 2354

Dell PowerConnect J-Series Ethernet Switch Complete Software Guide for Junos OS
Overview and Topology
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Performed basic bridging and VLAN configuration on the switch. See "Example: Setting
Up Basic Bridging and a VLAN for a J-EX Series Switch" on page 1063.
To permit printers access to the LAN, add them to the static MAC bypass list. The MAC
addresses on this list are permitted access without authentication from the RADIUS
server.
Figure 52 on page 2283 shows the two printers connected to the J-EX4200.