配置一台Catalyst 3550/3560/3750 和一台运行Cisco IOS软件的Catalyst交换机之间的802.1q中继

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已更新: 2006 年 12 月 12 日

文档 ID:10599

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简介

本文档提供在运行 Cisco IOS® 软件的 Cisco Catalyst 3550/3560/3750 交换机与运行 Cisco IOS 软件的 Catalyst 6500/6000 系列交换机或 Catalyst 4500/4000 系列交换机之间配置 IEEE 802.1Q (dot1q) 中继的示例。中继是一种在两个设备之间点到点链路上传输来自若干 VLAN 的流量的方式。

您能实施以太网中继的二种方式是：

交换机间链路协议 (ISL) - Cisco 专有协议
802.1Q—IEEE标准

先决条件

要求

尝试进行此配置之前，请确保满足以下要求：

了解 IEEE 802.1Q 中继
了解使用命令行界面 (CLI) 对 Catalyst 3560 和 Catalyst 6500/6000 系列交换机进行的配置

使用的组件

本文档中的信息基于以下软件和硬件版本：

运行 Cisco IOS 软件版本 12.2(25)SEA 的 Catalyst 3560 交换机
运行 Cisco IOS 软件版本 12.1(26)E1 的 Catalyst 6509 交换机

本文档中的 Catalyst 3560 配置也适用于运行 Cisco IOS 软件的 Catalyst 3550/3750 交换机。本文档中的 Catalyst 6500/6000 配置也适用于运行 Cisco IOS 软件的 Catalyst 4500/4000 系列交换机。

注意：要了解各种Catalyst交换机支持的中继方法，请参阅本文档：

在 Catalyst 交换机上实施中继的系统要求

本文档中的信息都是基于特定实验室环境中的设备编写的。本文档中使用的所有设备最初均采用原始（默认）配置。如果您使用的是真实网络，请确保您已经了解所有命令的潜在影响。

注意：本文档仅包括交换机的配置文件以及相关示例show命令的输出。有关如何在 Catalyst 交换机之间配置 802.1Q 中继的详细信息，请参阅以下文档：

配置 VLAN 的配置 VLAN 中继部分 - Catalyst 3560 系列交换机
为第2层交换配置LAN端口 — 运行Cisco IOS软件的Catalyst 6500系列交换机的了解VLAN中继部分
配置第2层以太网接口 — 运行Cisco IOS软件的Catalyst 4500系列交换机的“了解VLAN中继”部分

背景理论

IEEE 802.1Q 使用内部标记机制。中继设备先插入 4 字节标记来识别帧所属的 VLAN，再重新计算帧校验序列 (FCS)。有关详细信息，请参阅以下文档：

注意：以下是此配置期间要记住的一些重要注意事项：

Catalyst 3550/3560/3750 系列交换机上的所有以太网接口均可支持 802.1Q 和 ISL 封装。默认情况下，Catalyst 3550 交换机上的以太网接口是第 2 层 (L2) 端口。
Catalyst 6500/6000 系列交换机上的所有以太网端口均可支持 802.1Q 和 ISL 封装。
默认情况下，运行 Cisco IOS 软件的 Catalyst 4500 系列交换机支持 ISL 和 802.1Q 中继模式。这在 WS-X4418-GB 和 WS-X4412-2GB-T 模块上阻塞千兆端口以外的所有接口上均受到支持。这些端口不支持 ISL 而只支持 802.1Q 中继。端口 3 至 18 是 WS-X4418-GB 模块上的阻塞千兆端口。端口 1 至 12 是 WS-X4412-2GB-T 模块上的阻塞千兆端口。

注意：如果端口与背板的连接超订用，则端口是阻塞端口。
Catalyst 6500/6000 与 Catalyst 4500 平台之间的主要区别在于默认接口配置。默认情况下，运行 Cisco IOS 软件的 Catalyst 6500/6000 交换机中处于关闭模式的接口为第 3 层 (L3) 路由端口。运行 Cisco IOS 软件的 Catalyst 4500/4000 交换机已启用所有接口。默认情况下，接口是 L2 交换机端口。
当 802.1Q 封装用于 Catalyst 3750 交换机上的中继接口时，可在 show interface 输出中看到残帧，因为 61-64 字节的有效 802.1Q 封装数据包（包括 q 标记）被 Catalyst 3750 交换机算作是过小帧，即使这些数据包被正确地转发。有关详细信息，请参阅Cisco Bug ID CSCec (仅注册客户)。

配置

本部分提供有关如何配置本文档所述功能的信息。

注意：使用命令查找工具 (仅限注册客户)可获取有关本节中使用的命令的详细信息。

网络图

本文档使用以下网络设置：

注意：Catalyst 3560上的千兆以太网接口是10/100/1000 Mbps协商的以太网接口。因此，在此网络图中，Catalyst 3560 上的千兆端口连接到 Catalyst 6500 上的快速以太网 (100 Mbps) 端口。

配置

本文档使用以下配置：

Catalyst 3560 交换机
Catalyst 6500 交换机

Catalyst 3560 交换机
!--- Note: This example creates VLAN 1 and VLAN 2 !--- and sets the VLAN Trunk Protocol (VTP) mode to transparent. Use your !--- network as a basis and set the VTP mode accordingly. For more details, !--- refer to Configuring VLANs. version 12.2 no service pad service timestamps debug uptime service timestamps log uptime no service password-encryption ! hostname 3560 ! !--- This is the privileged mode password for the example. enable password mysecret ! ip subnet-zero ! vtp mode transparent ! !--- VLAN 2 is created. This is visible only when you set VTP mode !--- to transparent. vlan 2 ! ! !--- The Gigabit Ethernet interface on the Catalyst 3560 is a 10/100/1000 Mbps !--- negotiated Ethernet interface. Therefore, the Gigabit port on the !--- Catalyst 3560 is connected to a Fast Ethernet port on the Catalyst 6500. !--- Configure the trunk on the Gigabit Ethernet 0/1 interface. interface GigabitEthernet0/1 !--- Configure trunk encapsulation as dot1q. !--- For details on trunking, refer to Configuring VLANs. switchport trunk encapsulation dot1q !--- Enable trunking on the interface. switchport mode trunk no ip address snmp trap link-status ! ! !--- Interfaces Gigabit Ethernet 0/2 through 0/5 are placed in VLAN 1. !--- In order to configure the interface as an L2 port, !--- refer to the Configuring Ethernet Interfaces section !--- of Configuring Interface Characteristics. All L2 ports are placed !--- in VLAN 1, by default. interface GigabitEthernet0/2 switchport mode access no ip address snmp trap link-status ! interface GigabitEthernet0/3 switchport mode access no ip address snmp trap link-status ! ! interface GigabitEthernet0/4 switchport mode access no ip address snmp trap link-status ! interface GigabitEthernet0/5 switchport mode access no ip address snmp trap link-status ! ! !--- Interfaces Gigabit Ethernet 0/6 through 0/12 are placed in VLAN 2. interface GigabitEthernet0/6 switchport access vlan 2 switchport mode access no ip address snmp trap link-status ! !--- Output suppressed. ! interface GigabitEthernet0/12 switchport access vlan 2 switchport mode access no ip address snmp trap link-status ! interface Vlan1 !--- This is the IP address for management. ip address 10.1.1.1 255.255.255.0 ! ip classless ip http server ! ! line con 0 transport input none line vty 0 4 !--- This is the privileged mode password for the example. password mysecret login line vty 5 15 login ! end

Catalyst 3560 交换机

!--- Note: This example creates VLAN 1 and VLAN 2 !--- and sets the VLAN Trunk Protocol (VTP) mode to transparent. Use your !--- network as a basis and set the VTP mode accordingly. For more details, !--- refer to Configuring VLANs.

version 12.2
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname 3560
!

!--- This is the privileged mode password for the example.

enable password mysecret
!
ip subnet-zero
!
vtp mode transparent
!

!--- VLAN 2 is created. This is visible only when you set VTP mode !--- to transparent.
vlan 2
!

!--- The Gigabit Ethernet interface on the Catalyst 3560 is a 10/100/1000 Mbps !--- negotiated Ethernet interface. Therefore, the Gigabit port on the !--- Catalyst 3560 is connected to a Fast Ethernet port on the Catalyst 6500. !--- Configure the trunk on the Gigabit Ethernet 0/1 interface.

interface GigabitEthernet0/1

!--- Configure trunk encapsulation as dot1q. !--- For details on trunking, refer to Configuring VLANs.

switchport trunk encapsulation dot1q

!--- Enable trunking on the interface.

switchport mode trunk
no ip address
snmp trap link-status
!
!

!--- Interfaces Gigabit Ethernet 0/2 through 0/5 are placed in VLAN 1. !--- In order to configure the interface as an L2 port, !--- refer to the Configuring Ethernet Interfaces section !--- of Configuring Interface Characteristics. All L2 ports are placed !--- in VLAN 1, by default.

interface GigabitEthernet0/2
switchport mode access
no ip address
snmp trap link-status
!
interface GigabitEthernet0/3
switchport mode access
no ip address
snmp trap link-status
!
!
interface GigabitEthernet0/4
switchport mode access
no ip address
snmp trap link-status
!
interface GigabitEthernet0/5
switchport mode access
no ip address
snmp trap link-status
!
!

!--- Interfaces Gigabit Ethernet 0/6 through 0/12 are placed in VLAN 2.

interface GigabitEthernet0/6
switchport access vlan 2
switchport mode access
no ip address
snmp trap link-status
!

!--- Output suppressed.

!
interface GigabitEthernet0/12
switchport access vlan 2
switchport mode access
no ip address
snmp trap link-status
!
interface Vlan1

!--- This is the IP address for management.

ip address 10.1.1.1 255.255.255.0
!
ip classless
ip http server
!
!
line con 0
transport input none
line vty 0 4

!--- This is the privileged mode password for the example.

password mysecret
login
line vty 5 15
login
!
end

Catalyst 6500 交换机
!--- Note: This example creates VLAN 1 and VLAN 2 and sets !--- the VTP mode to transparent. Use your network as a basis and set the VTP !--- mode accordingly. For more details, refer to Configuring VLANs. Current configuration : 4812 bytes version 12.1 service timestamps debug uptime service timestamps log uptime no service password-encryption ! hostname Cat6500 ! vtp mode transparent ip subnet-zero ! ! mls flow ip destination mls flow ipx destination ! !--- This is the privileged mode password for the example. enable password mysecret ! redundancy mode rpr-plus main-cpu auto-sync running-config auto-sync standard ! ! !--- This enables VLAN 2. vlan 2 ! ! interface GigabitEthernet1/1 no ip address shutdown ! interface GigabitEthernet1/2 no ip address shutdown ! !--- The Gigabit Ethernet interface on the Catalyst 3560 is a 10/100/1000 Mbps !--- negotiated Ethernet interface. Therefore, the Gigabit port on the Catalyst 3560 !--- is connected to a Fast Ethernet port on the Catalyst 6500. interface FastEthernet3/1 no ip address !--- You must issue the switchport command once, !--- without any keywords, in order to configure the interface as an L2 port for the !--- Catalyst 6500 series switch that runs Cisco IOS Software. !--- On a Catalyst 4500 series switch that runs Cisco IOS Software, all ports are L2 !--- ports by default. Therefore, if you do not change the default configuration, !--- you do not need to issue the switchport command. !--- For more details, refer to Configuring Layer 2 Ethernet Interfaces !--- for the Catalyst 4500 series switch that runs Cisco IOS Software. switchport !--- Configure trunk encapsulation as dot1q. !--- For more details on trunking, refer to !--- Configuring LAN Ports for Layer 2 Switching for the Catalyst 6500 series switch !--- that runs Cisco IOS Software, or Configuring Layer 2 Ethernet Interfaces !--- for the Catalyst 4500/4000 series switch that runs Cisco IOS Software. switchport trunk encapsulation dot1q !--- Enable trunking on the interface. switchport mode trunk ! !--- Configure interfaces Fast Ethernet 3/2 through 3/24 to be in access mode. !--- By default, all access ports are configured in VLAN 1. !--- For more details, refer to Configuring LAN Ports for Layer 2 Switching !--- for the Catalyst 6500 series switch that runs Cisco IOS Software, or !--- Configuring Layer 2 Ethernet Interfaces for the Catalyst 4500/4000 series !--- switch that runs Cisco IOS Software. interface FastEthernet3/2 no ip address switchport switchport mode access ! !--- Output suppressed. ! interface FastEthernet3/24 no ip address switchport switchport mode access ! !--- Fast Ethernet 3/25 through 3/48 are placed in VLAN 2. !--- For more details, refer to Configuring LAN Ports for Layer 2 Switching !--- for the Catalyst 6500 series switch that runs Cisco IOS Software, !--- or Configuring Layer 2 Ethernet Interfaces for the Catalyst 4500/4000 !--- series switch that runs Cisco IOS Software. interface FastEthernet3/25 no ip address switchport switchport access vlan 2 switchport mode access ! !--- Output suppressed. ! interface FastEthernet3/48 no ip address switchport switchport access vlan 2 switchport mode access ! ! interface Vlan1 !--- This is the IP address for management. ip address 10.1.1.2 255.255.255.0 ! ! ip classless no ip http server ! ! ip classless ip http server ! line con 0 exec-timeout 0 0 transport input none line vty 0 4 !--- This is the Telnet password for the example. password mysecret login ! end

Catalyst 6500 交换机

!--- Note: This example creates VLAN 1 and VLAN 2 and sets !--- the VTP mode to transparent. Use your network as a basis and set the VTP !--- mode accordingly. For more details, refer to Configuring VLANs.

Current configuration : 4812 bytes
version 12.1
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Cat6500
!
vtp mode transparent
ip subnet-zero
!
!
mls flow ip destination
mls flow ipx destination
!

!--- This is the privileged mode password for the example.

enable password mysecret
!
redundancy
mode rpr-plus
main-cpu
auto-sync running-config
auto-sync standard

!
!

!--- This enables VLAN 2.

vlan 2
!
!

interface GigabitEthernet1/1
no ip address
shutdown
!
interface GigabitEthernet1/2
no ip address
shutdown
!

!--- The Gigabit Ethernet interface on the Catalyst 3560 is a 10/100/1000 Mbps !--- negotiated Ethernet interface. Therefore, the Gigabit port on the Catalyst 3560 !--- is connected to a Fast Ethernet port on the Catalyst 6500.

interface FastEthernet3/1
no ip address

!--- You must issue the switchport command once, !--- without any keywords, in order to configure the interface as an L2 port for the !--- Catalyst 6500 series switch that runs Cisco IOS Software. !--- On a Catalyst 4500 series switch that runs Cisco IOS Software, all ports are L2 !--- ports by default. Therefore, if you do not change the default configuration, !--- you do not need to issue the switchport command. !--- For more details, refer to Configuring Layer 2 Ethernet Interfaces !--- for the Catalyst 4500 series switch that runs Cisco IOS Software.

switchport

!--- Configure trunk encapsulation as dot1q. !--- For more details on trunking, refer to !--- Configuring LAN Ports for Layer 2 Switching for the Catalyst 6500 series switch !--- that runs Cisco IOS Software, or Configuring Layer 2 Ethernet Interfaces !--- for the Catalyst 4500/4000 series switch that runs Cisco IOS Software.

switchport trunk encapsulation dot1q

!--- Enable trunking on the interface.

switchport mode trunk
!

!--- Configure interfaces Fast Ethernet 3/2 through 3/24 to be in access mode. !--- By default, all access ports are configured in VLAN 1. !--- For more details, refer to Configuring LAN Ports for Layer 2 Switching !--- for the Catalyst 6500 series switch that runs Cisco IOS Software, or !--- Configuring Layer 2 Ethernet Interfaces for the Catalyst 4500/4000 series !--- switch that runs Cisco IOS Software.

interface FastEthernet3/2
no ip address
switchport
switchport mode access
!

!--- Output suppressed.

!
interface FastEthernet3/24
no ip address
switchport
switchport mode access
!

!--- Fast Ethernet 3/25 through 3/48 are placed in VLAN 2. !--- For more details, refer to Configuring LAN Ports for Layer 2 Switching !--- for the Catalyst 6500 series switch that runs Cisco IOS Software, !--- or Configuring Layer 2 Ethernet Interfaces for the Catalyst 4500/4000 !--- series switch that runs Cisco IOS Software.

interface FastEthernet3/25
no ip address
switchport
switchport access vlan 2
switchport mode access
!

!--- Output suppressed.

!
interface FastEthernet3/48
no ip address
switchport
switchport access vlan 2
switchport mode access
!
!
interface Vlan1

!--- This is the IP address for management.

ip address 10.1.1.2 255.255.255.0
!
!
ip classless
no ip http server
!
!
ip classless
ip http server
!
line con 0
exec-timeout 0 0
transport input none
line vty 0 4

!--- This is the Telnet password for the example.

password mysecret
login

!
end

注意：如果将接口分配给不存在的VLAN，则接口将关闭，直到您在VLAN数据库中创建VLAN。有关详细信息，请参阅配置 VLAN 的创建或修改以太网 VLAN 部分。

验证

使用本部分可确认配置能否正常运行。

命令输出解释程序（仅限注册用户）(OIT) 支持某些 show 命令。使用 OIT 可查看对 show 命令输出的分析。

在 Catalyst 3550/3560/3750/6500/4500 交换机上，请使用以下命令：

show interfaces interface_type module/port trunk
show interfaces interface_type module/port switchport命令
show vlan
show vtp status

show 命令输出示例

Catalyst 3560 交换机

show interfaces interface_type module/port trunk - 此命令显示接口的中继配置以及能够通过中继为其传输流量的 VLAN 编号。

3560# show interface gigabitethernet 0/1 trunk
 
Port      Mode         Encapsulation  Status        Native vlan
Gi0/1     on           802.1q         trunking      1
 
Port      Vlans allowed on trunk
Gi0/1     1 4094
 
Port      Vlans allowed and active in management domain
Gi0/1     1-2
 
Port      Vlans in spanning tree forwarding state and not pruned
Gi0/1     1-2

show interfaces interface_type module/port switchport - 此命令显示接口的交换机端口配置。

在显示器中，选中 Operational Mode 和 Operational Trunking Encapsulation 字段。

3560# show interface gigabitethernet 0/1 switchport
Name: Gi0/1
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: On
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Voice VLAN: none
Administrative private-vlan host-association: none 
Administrative private-vlan mapping: none 
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk private VLANs: none
Operational private-vlan: none
Trunking VLANs Enabled: ALL
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL  
Protected: false
Unknown unicast blocked: disabled
Unknown multicast blocked: disabled
Appliance trust : none

show vlan - 此命令提供有关 VLAN 及属于特定 VLAN 的端口的信息。

3560# show vlan
 
VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------
1    default                          active    Gi0/2, Gi0/3, Gi0/4, Gi0/5
2    VLAN0002                         active    Gi0/6, Gi0/7, Gi0/8, Gi0/9
                                                            Gi0/10, Gi0/11, Gi0/12

1002 fddi-default                     act/unsup
1003 token-ring-default               act/unsup
1004 fddinet-default                  act/unsup
1005 trnet-default                    act/unsup

!--- Output suppressed.

注意：输出中显示的端口仅是接入端口。但是，配置为中继以及处于“未连接”状态的端口也显示在 show vlan 输出中。

show vtp status - 此命令显示有关 VTP 管理域、状态和计数器的一般信息。

3560# show vtp status
VTP Version : 2 
Configuration Revision : 0 
Maximum VLANs supported locally : 1005 
Number of existing VLANs : 6 
VTP Operating Mode : Transparent      
VTP Domain Name : 
VTP Pruning Mode : Disabled 
VTP V2 Mode : Disabled 
VTP Traps Generation : Disabled 
MD5 digest : 0x4A 0x55 0x17 0x84 0xDB 0x99 0x3F 0xD1 
Configuration last modified by 10.1.1.1 at 0-0-00 00:00:00

3560# ping 10.1.1.2 
Type escape sequence to abort. 
Sending 5, 100-byte ICMP Echos to 10.1.1.2, timeout is 2 seconds: 
!!!!! 
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms 
3560#

Catalyst 6500 交换机

show interfaces interface_type module/port trunk - 此命令显示接口的中继配置以及能够通过中继为其传输流量的 VLAN 编号。

Cat6500# show interfaces fastethernet 3/1 trunk
 
Port      Mode         Encapsulation  Status        Native vlan
Fa3/1     on           802.1q         trunking      1
 
Port      Vlans allowed on trunk
Fa3/1     1 4094
 
Port      Vlans allowed and active in management domain
Fa3/1     1-2
 
Port      Vlans in spanning tree forwarding state and not pruned
Fa3/1     1-2

show interfaces interface_type module/port switchport - 此命令显示接口的交换机端口配置。

在显示器中，选中 Operational Mode 和 Operational Trunking Encapsulation 字段。

cat6500# show interface fastethernet 3/1 switchport 
Name: Fa3/1
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: On
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Voice VLAN: none
Administrative private-vlan host-association: none 
Administrative private-vlan mapping: none 
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk private VLANs: none
Operational private-vlan: none
Trunking VLANs Enabled: ALL
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL

show vlan - 此命令提供有关 VLAN 及属于特定 VLAN 的端口的信息。

Cat6500# show vlan
 
VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------
1    default                          active    Fa3/2, Fa3/3, Fa3/4, Fa3/5
                                                Fa3/6, Fa3/7, Fa3/8, Fa3/9
                                                Fa3/10, Fa3/11, Fa3/12, Fa3/13
                                                Fa3/14, Fa3/15, Fa3/16, Fa3/17
                                                Fa3/18, Fa3/19, Fa3/20, Fa3/21
                                                Fa3/22, Fa3/23, Fa3/24
2    VLAN0002                         active    Fa3/25, Fa3/26, Fa3/27, Fa3/28
                                                Fa3/29, Fa3/30, Fa3/31, Fa3/32
                                                Fa3/33, Fa3/34, Fa3/35, Fa3/36
                                                Fa3/37, Fa3/38, Fa3/39, Fa3/40
                                                Fa3/41, Fa3/42, Fa3/43, Fa3/44
                                                Fa3/45, Fa3/46, Fa3/47, Fa3/48
1002 fddi-default                      act/unsup
1003 token-ring-default                act/unsup
1004 fddinet-default                   act/unsup
1005 trnet-default                     act/unsup


!--- Output suppressed.

注意：显示的端口仅是已配置为第2层非中继（接入）端口的端口。配置为中继以及处于“未连接”状态的端口也显示在 show vlan 输出中。有关详细信息，请参阅为第2层交换配置LAN端口的第2层交换配置LAN接口部分。

show vtp status - 此命令显示有关 VTP 管理域、状态和计数器的一般信息。

Cat6500# show vtp status
VTP Version                     : 2
Configuration Revision          : 0
Maximum VLANs supported locally : 1005
Number of existing VLANs        : 6
VTP Operating Mode              : Transparent
VTP Domain Name                 :
VTP Pruning Mode                : Disabled
VTP V2 Mode                     : Disabled
VTP Traps Generation            : Disabled
MD5 digest                      : 0xBF 0x86 0x94 0x45 0xFC 0xDF 0xB5 0x70
Configuration last modified by 10.1.1.2 at 0-0-00 00:00:00

ping

Cat6500# ping 10.1.1.1
 
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.1.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms

故障排除

目前没有针对此配置的故障排除信息。有关中继和802.1Q配置的常见问题，请参阅使用8的Catalyst 4500/4000、5500/5000和6500/6000系列交换机之间的中继文档的常见错误部分02.1Q封装与Cisco CatOS系统软件相结合。

配置一台Catalyst 3550/3560/3750 和一台运行Cisco IOS软件的Catalyst交换机之间的802.1q中继

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简介

先决条件

要求

使用的组件

背景理论

配置

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配置

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Catalyst 3560 交换机

Catalyst 6500 交换机

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