Netgear Switch M4100 User Manual download pdf (Page 31)

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Chapter 2. VLANs | 31

ProSafe M4100 and M7100 Managed Switches

Virtual VLANs: Create an IP Subnet–Based VLAN

In an IP subnet–based VLAN, all the end workstations in an IP subnet are assigned to the

same VLAN. In this VLAN, users can move their workstations without reconfiguring their

network addresses. IP subnet VLANs are based on Layer 3 information from packet headers.

The switch makes use of the network-layer address (for example, the subnet address for

TCP/IP networks) in determining VLAN membership. If a packet is untagged or priority

tagged, the switch associates the packet with any matching IP subnet classification. If no IP

subnet classification can be made, the packet is subjected to the normal VLAN classification

rules of the switch. This IP subnet capability does not imply a routing function or that the

VLAN is routed. The IP subnet classification feature affects only the VLAN assignment of a

packet. Appropriate 802.1Q VLAN configuration must exist in order for the packet to be

switched.

PC 1 PC 2

10.100.5.1 10.100.5.30

Switch

1/0/24

1/0/1

Figure 2. IP subnet–based VLAN

CLI: Create an IP Subnet–Based VLAN

(Netgear Switch) #vlan database

(Netgear Switch) (Vlan)#vlan 2000

(Netgear Switch) (Vlan)#vlan association subnet 10.100.0.0 255.255.0.0 2000

(Netgear Switch) (Vlan)#exit

Create an IP subnet–based VLAN 2000.

(Netgear Switch) #config

(Netgear Switch) (Config)#interface range 1/0/1-1/0/24

(Netgear Switch) (conf-if-range-1/0/1-1/0/24)# vlan participation include 2000

(Netgear Switch) (conf-if-range-1/0/1-1/0/24)#exit

(Netgear Switch) (Config)#

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Netgear Switch M4100 User Manual Page 31

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