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Chapter 57 VLAN
XGS2220 Series User’s Guide
430
57.9 Protocol Based VLAN
Protocol based VLANs allow you to group traffic into logical VLANs based on the protocol you specify.
When an upstream frame is received on a port (configured for a protocol based VLAN), the Switch
checks if a tag is added already and its protocol. The untagged packets of the same protocol are then
placed in the same protocol based VLAN. One advantage of using protocol based VLANs is that priority
can be assigned to traffic of the same protocol.
Note: Protocol-based VLAN applies to un-tagged packets and is applicable only when you
use IEEE 802.1Q tagged VLAN.
For example, port 1, 2, 3 and 4 belong to static VLAN 100, and port 4, 5, 6, 7 belong to static VLAN 120.
You configure a protocol based VLAN A with priority 3 for ARP traffic received on port 1, 2 and 3. You
also have a protocol based VLAN B with priority 2 for Apple Talk traffic received on port 6 and 7. All
upstream ARP traffic from port 1, 2 and 3 will be grouped together, and all upstream Apple Talk traffic
from port 6 and 7 will be in another group and have higher priority than ARP traffic, when they go
through the uplink port to a backbone switch C.
Figure 337 Protocol Based VLAN Application Example
57.10 Configuring Protocol Based VLAN
Click the SWITCHING > VLAN > Protocol Based VLAN Setup link in the navigation panel to display the
configuration screen as shown.
Figure 338 SWITCHING > VLAN > Protocol Based VLAN Setup
Clear Click Clear to clear the fields to the factory defaults.
Cancel Click Cancel to not save the configuration you make and return to the last screen.
Table 211 SWITCHING > VLAN > Subnet Based VLAN Setup > Add/Edit (continued)
LABEL DESCRIPTION
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