Specifications

Waters Network Systems User’s Manual Page 53
PS-2126M-POE
named PVLAN-1 contains port members Ports 1, 2, 3 & 4, and if you are connected to Port
1, you can communicate with Port 2-4. If you are connected to Port 5, you cannot
communicate with those ports. Each port-based VLAN must be assigned a group name.
This switch can support a maximum of 26 port-based VLAN groups.
Symmetric VLAN:
This is an Ingress Rule. This rule forwards only packets with VIDs matching this port’s
configured VID. For example, if port 1 receives a tagged packet with VID=100 (VLAN
named=VLAN100), and if the Symmetric-VLAN function is enabled, the switch will determine if
port 1 is a member of VLAN100. If it is, the received packet is forwarded; otherwise, the
received packet is dropped.
Note: If Symmetric VLAN is enabled and port 1, for example, receives an untagged packet, the
switch will apply the PVID of port 1 to tag this packet. The packet will then will be forwarded.
But if the PVID of port 1 is not 100, the packet will be dropped.
SVL:
If SVL is enabled, all VLANs use the same filtering database storing the membership
information of the VLAN to learn or look up the membership information of the VLAN. If SVL is
disabled, the learning mode is IVL. In this mode, VLANs use different filtering database storing
the membership information of the VLAN to learn or look up the information of a VLAN member.
Double Tag:
Double-tag mode belongs to the tag-based mode, however, it would treat all frames as
untagged ones, which means that the tag with PVID will be added into all packets. Then, these
packets will be forwarded as Tag-based VLANs. So, the incoming packets with tag will become
the double-tag ones.
.
Figure 5.21 – VLAN Mode