Brocade TurboIron 24X Series Configuration Guide - Manual (Page 400)

366 Brocade TurboIron 24X Series Configuration Guide
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VLAN overview
NOTE
The Layer 3 Switch routes packets between VLANs of the same protocol. The Layer 3 Switch cannot
route from one protocol to another.
NOTE
IP subnet VLANs are not the same thing as IP protocol VLANs. An IP protocol VLAN sends all IP
broadcasts on the ports within the IP protocol VLAN. An IP subnet VLAN sends only the IP subnet
broadcasts for the subnet of the VLAN. You cannot configure an IP protocol VLAN and an IP subnet
VLAN within the same port-based VLAN.
This note also applies to IPX protocol VLANs and IPX network VLANs, and to AppleTalk protocol VLANs
and AppleTalk cable VLANs.
Default VLAN
By default, all the ports on a device are in a single port-based VLAN. This VLAN is called the
DEFAULT-VLAN and is VLAN number 1.
Figure 37 shows an example of the default Layer 2 port-based VLAN.
FIGURE 37 Default Layer 2 port-based VLAN
DEFAULT-VLAN
VLAN ID = 1
Layer 2 Port-based VLAN
By default, all ports belong to a single
port-based VLAN, DEFAULT-VLAN.
Thus, all ports belong to a single
Layer 2 broadcast domain.