Cisco IE 4000 Software Configuration Guide

272
Configuring VLANs
VLANs
Traffic between VLANs must be routed or fallback bridged. The switch can route traffic between VLANs by using switch
virtual interfaces (SVIs). An SVI must be explicitly configured and assigned an IP address to route traffic between VLANs.
Note: If you plan to configure many VLANs on the switch and to not enable routing, you can use the sdm prefer vlan
global configuration command to set the Switch Database Management (sdm) feature to the VLAN template, which
configures system resources to support the maximum number of unicast MAC addresses. For more information on the
SDM templates, see Configuring SDM Templates, page 137
Supported VLANs
The switch supports VLANs in VTP client, server, and transparent modes. VLANs are identified by a number from 1 to
4096. VLAN IDs 1002 through 1005 are reserved for Token Ring and FDDI VLANs.
VTP version 1 and version 2 support only normal-range VLANs (VLAN IDs 1 to 1005). In these versions, the switch must
be in VTP transparent mode when you create VLAN IDs from 1006 to 4096.
This release supports VTP version 3. VTP version 3 supports the entire VLAN range (VLANs 1 to 4096). Extended range
VLANs (VLANs 1006 to 4096) are supported only in VTP version 3. You cannot convert from VTP version 3 to VTP version
2 if extended VLANs are configured in the domain.
Although the switch supports a total of 1005 (normal range and extended range) VLANs, the number of routed ports,
SVIs, and other configured features affects the use of the switch hardware.
The switch supports per-VLAN spanning-tree plus (PVST+) or rapid PVST+ with a maximum of 128 spanning-tree
instances. One spanning-tree instance is allowed per VLAN. See Normal-Range VLAN Configuration Guidelines,
page 275 for more information about the number of spanning-tree instances and the number of VLANs.
VLAN Port Membership Modes
You configure a port to belong to a VLAN by assigning a membership mode that specifies the kind of traffic the port
carries and the number of VLANs to which it can belong. Table 33 on page 273 lists the membership modes and
membership and VTP characteristics.

Cisco IE 4000 Specifications

General

Product Type	Switch
Form Factor	DIN Rail Mountable
MAC Address Table Size	8000
Jumbo Frame Support	9216 bytes
Operating Temperature	-40°C to 70°C
Mean Time Between Failures (MTBF)	Over 500, 000 hours
Memory	256 MB DRAM
Mounting	DIN Rail, Wall
Certifications	EN 50121-4
Ports	8 x 10/100Base-TX Ethernet Ports