Cisco Catalyst 4500 Series Software Configuration Guide

17-3
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 17 Configuring VLANs, VTP, and VMPS
VLANs
• VLAN number to use when translating from one VLAN type to another
Note When the software translates from one VLAN type to another, it requires a different VLAN number for
each media type.
VLAN Configuration Guidelines and Restrictions
Follow these guidelines and restrictions when creating and modifying VLANs in your network:
• Before creating a VLAN, put the Catalyst 4500 series switch in VTP server mode or VTP
transparent mode. If the Catalyst 4500 series switch is a VTP server, you must define a VTP domain.
For information on configuring VTP, see the “VLAN Trunking Protocol” section on page 17-7.
• You cannot use the end command in VLAN database mode.
• You cannot use Ctrl-Z to exit VLAN database mode.
• If a Catalyst 4948 switch running MSTP and configured with all possible VLANs (4094) is in the
path of two HSRP peers with the timeout set below 500 ms, HSRP flaps.
Workarounds:
– Use fewer VLANs.
– Set the timers greater than 600 ms.
– Enter the no igmp snooping (globally) and access-list hardware capture mode VLAN
commands
VLAN Ranges
Note You must enable the extended system ID to use 4094 VLANs. See the “Understanding the Bridge ID”
section on page 23-2.
With Cisco IOS Release 12.2(31)SGA and later, Catalyst 4500 series switches support 4096 VLANs in
compliance with the IEEE 802.1Q standard. These VLANs are organized into three ranges: reserved,
normal, and extended.
Some of these VLANs are propagated to other switches in the network when you use the VLAN
Trunking Protocol (VTP). The extended-range VLANs are not propagated, so you must configure
extended-range VLANs manually on each network device.
Table 17-1 describes the uses for VLAN ranges.
Table 17-1 VLAN Ranges
VLANs Range Usage
Propagated
by VTP
0, 4095 Reserved For system use only. You cannot see or use these VLANs. —
1 Normal Cisco default. You cannot delete this VLAN. Yes
2–1001 Normal Used for Ethernet VLANs; you can create, use, and delete
these VLANs.
Yes

Cisco Catalyst 4500 Series Specifications

General

Series	Catalyst 4500 Series
Category	Switch
Layer Support	Layer 2, Layer 3
Form Factor	Modular chassis
Stackable	No
Chassis Slots	3, 6, 7, 10
Power Supply Options	AC, DC
Redundancy	Power supply, Supervisor engine
Network Management	Cisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
Features	Security, QoS
Port Density	Up to 384 ports per chassis
Security Features	802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine	8-E