9032785
Virtual LANs (VLANs) 93
In Example 3 in Figure D-3B, an untagged frame arrives at the left port
(1). The switch tags the frame with the PVID for VLAN X (2). Since the
destination MAC address has already been learned as a tagged station
on VLAN X on the outgoing port, the frame is sent out with a VLAN X tag.
Example 4 in Figure D-3B is similar to Example 3 except that both ports
(incoming and outgoing) have a VLAN X PVID. The untagged frame
arrives at the incoming port (1) and gets tagged with a VLAN X tag (2).
The tag may or may not be stripped off as the frame exits the switch,
depending on how the MAC address of the destination device was
learned (3). In this example, the destination was learned as an untagged
station so the tag is stripped. This Hybrid port example is thus essentially
the same as the Access port case in Figure D-2, Example 1.
Figure D-3B. VLAN Hybrid Ports (Examples 3 and 4)
When sending broadcast or unknown DA unicast frames
out a Hybrid port, the frames are always tagged. The
VLAN ID of the tag is identical to the VLAN ID that was as-
signed to the frame when it entered the switch on the
source port.
Summary of Contents for SmartSTACK ELS100-24TXM
Page 1: ...SmartSTACK 100 ELS100 24TXM ETHERNET SWITCH INSTALLATION AND USER GUIDE...
Page 6: ......
Page 14: ......
Page 28: ......
Page 88: ......
Page 94: ......
Page 100: ......
Page 116: ...102 Index ELS100 24TXM...
Page 117: ...DOCUMENT 591 0046 02A...
