48-Port Gigabit Ethernet PoE+ Managed Switch with Four 10G SFP+ Uplinks
User Manual
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6.2
Advanced Application
Choose
Advanced Application
, and the following page appears. There are VLAN, MAC Address
Forwarding, Spanning Tree Protocol, ERPS Protocol, EAPS Protocol, VRRP Protocol, Layer 2
Tunneling Protocol, PPPoEIA, Bandwidth Control, Broadcast Storm Control, Mirroring, Link
Aggregation, Port Security, PoE Settings, Classifier, Policy Rule, Queuing Method, Multicast, IPv6
Multicast, Dos attack protect, DHCP Snooping Setting, SNTP Setting, QinQ, and AAA
configuration web pages.
6.2.1
VLAN
A virtual LAN (VLAN) is any broadcast domain that is partitioned and isolated in a computer
network at the datalink layer (OSI layer 2). VLANs are datalink layer (OSI layer 2) constructs that
are analogous to IP subnets, which are network-layer (OSI layer 3) constructs. VLANs can be used
to partition a local network into several distinctive segments.
VLAN technology provides the following advantages:
1.
Broadcast traffic does not cross into different VLANs, which reduces bandwidth utilization
and improves network performance.
2.
Security in your LAN can be improved since packets in different VLANs cannot communicate
with each other directly.
3.
With VLAN, clients can be allocated to different working groups, and users from the same
group do not have to be within the same physical area, which makes network maintenance
much easier and more flexible.
VLAN technology knows three types of ports—access, trunk and hybrid ports.
1.
Access Ports (untagged)
a.
Access ports are designed to tag any incoming packet with the VLAN ID the port has been
assigned to.
b.
The switch drops tagged VLAN packets that arrive at the access port.
c.
As far as the Intellinet Network Solutions switch is concerned, any port that isn’t defined
as a trunk or hybrid port is considered an access port.
