介绍
本文扩展了Catalyst 2948G-L3配置样例――单VLAN、多VLAN以及与网络核心连接的多VLAN分布层的技术文档。请链接以前的文档，了解这些配置实例更详细的说明。
开始之前
规则
有关文档规则的更多信息，请参阅“Cisco技术提示规则”
前提条件
本资料没有特殊前提条件。
使用的组件
本文不限于特定的软件和硬件版本。
实例1－单VLAN网络
本节中的全设备配置均针对实例1：Catalyst 2948G-L3 配置样例中的单VLAN 网络。
Catalyst 2948G-L3
Catalyst 3548XL
图1：实例1的网络图
Catalyst 2948G-L3 配置
2948G-L3#show running-config
Building configuration...
Current configuration:
!
! Last configuration change at 04:16:10 PST Thu Jun 22 2000
! NVRAM config last updated at 04:16:11 PST Thu Jun 22 2000
!
version 12.0
no service pad
service timestamps debug datetime msec localtime
service timestamps log datetime msec localtime
no service password-encryption
!
hostname 2948G-L3
!
boot system flash bootflash:cat2948g-in-mz.120-7.W5.15d.bin
no logging console
enable password verysecret
!
clock timezone PST -8
clock calendar-valid
ip subnet-zero
bridge irb
!
!
!
interface Port-channel1
no ip address
no ip directed-broadcast
bridge-group 1
hold-queue 300 in
!
interface FastEthernet1
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet2
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet3
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet4
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet5
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet6
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet7
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet8
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet9
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet10
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet11
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet12
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet13
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet14
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet15
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet16
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet17
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet18
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet19
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet20
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet21
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet22
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet23
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet24
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet25
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet26
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet27
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet28
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet29
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet30
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet31
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet32
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet33
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet34
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet35
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet36
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet37
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet38
no ip address
no ip directed-broadcast
bridge-group 1
bridge-group 1 spanning-disabled