S8500关于实现GVRP技术介绍

一、简单原理介绍

GVRP（GARP VLAN Registration Protocol）是GARP的一种应用，它基于GARP的工作机制，维护交换机中的VLAN动态注册信息，并传播该信息到其它的交换机中。所有支持GVRP特性的交换机能够接收来自其它交换机的VLAN注册信息，并动态更新本地的VLAN注册信息，包括当前的VLAN成员、这些VLAN成员可以通过哪个端口到达等。而且所有支持GVRP特性的交换机能够将本地的VLAN注册信息向其它交换机传播，以便使同一交换网内所有支持GVRP特性的设备的VLAN信息达成一致。GVRP传播的VLAN注册信息既包括本地手工配置的静态注册信息，也包括来自其它交换机的动态注册信息。

GVRP在IEEE 802.1Q标准文本中有详细的表述。Quidway系列交换机对符合IEEE标准的GVRP提供完备的支持。

二、S8500典型配置实例

2.1 组网需求

为了实现交换机之间VLAN信息的动态注册和更新，需要在交换机上启动GVRP。

2.2 组网图

2.3 配置命令

# 开启全局GVRP。

Switch A的基本配置：

[Switch A] gvrp

[Switch A]vlan 10

[Switch A]vlan 20

[Switch A]vlan 100

# 将以太网端口eth4/1/10配置为Trunk端口，并允许所有VLAN通过。

[Switch A] interface eth4/1/10

[Switch A-Ethernet4/1/10] port link-type trunk

[Switch A-Ethernet4/1/10] port trunk permit vlan all

# 在Trunk端口上开启GVRP。

[Switch A-Ethernet4/1/10] gvrp

Switch B的基本配置：

# 开启全局GVRP。

[Quidway] gvrp

[Switch A]vlan 40

[Switch A]vlan 50

# 将以太网端口Ethernet4/1/1配置为Trunk端口，并允许所有VLAN通过。

[Quidway] interface Ethernet3/1/1

[Quidway-Ethernet3/1/1] port link-type trunk

[Quidway-Ethernet3/1/1] port trunk permit vlan all

# 在Trunk端口上开启GVRP。

[Quidway-Ethernet3/1/1] gvrp

三、正常状态信息查看

# 只启动一台交换机的GVRP后，此交换机TRUNK口的情况，可以看出，vlan passing：10、20、100。已经将注册的vlan自动的发布到了端口上。

<routerA>dis int eth4/1/10 

 Ethernet4/1/10 current state : UP

 IP Sending Frames' Format is PKTFMT_ETHNT_2, Hardware address is 00e0-fc36-45b1

 The Maximum Transmit Unit is 1500

 Media type is twisted pair, loopback not set 

 Port hardware type is 100_BASE_TX 

 100Mbps-speed mode, full-duplex mode

 Link speed type is autonegotiation, link duplex type is autonegotiation

 Flow-control is not enabled 

 The Maximum Frame Length is 1552 

 Broadcast MAX-ratio: 50%

 Allow jumbo frame to pass

 PVID: 1 

 Mdi type: auto

 Link-status hold interval:3 Sec 

 Port link-type: trunk 

  VLAN passing  : 1(default vlan), 10, 20, 100

  VLAN permitted: 1(default vlan), 2-4094

  Trunk port encapsulation: IEEE 802.1q 

 GVRP is enabled

 Last 300 seconds input:  0 packets/sec 104 bits/sec     0%

 Last 300 seconds output:  0 packets/sec 104 bits/sec     0%

 Input(total):  2968 packets, 369540 bytes  

# 当所有交换机都运行了GVRP后，vlan passing：10、20、40、50、100。可以看出gvrp成功的将所有vlan都发布了。

[Quidway]dis int eth3/1/1 

 Ethernet3/1/1 current state : UP

 IP Sending Frames' Format is PKTFMT_ETHNT_2, Hardware address is 00e0-fc00-0001

 The Maximum Transmit Unit is 1500 

 Media type is twisted pair, loopback not set

 Port hardware type is 100_BASE_TX

 100Mbps-speed mode, full-duplex mode 

 Link speed type is autonegotiation, link duplex type is autonegotiation

 Flow-control is not enabled

 The Maximum Frame Length is 1552

 Broadcast MAX-ratio: 50%

 Allow jumbo frame to pass

 PVID: 1

 Mdi type: auto

 Port link-type: trunk

  VLAN passing  : 1(default vlan), 10, 20, 40, 50, 100

  VLAN permitted: 1(default vlan), 2-4094

  Trunk port encapsulation: IEEE 802.1q

 GVRP is enabled.

 Last 300 seconds input:  0 packets/sec 22 bytes/sec

 Last 300 seconds output:  0 packets/sec 13 bytes/sec

 Input(total):  1475 packets, 106496 bytes 

          330 broadcasts, 1145 multicasts

 Input(normal):  1475 packets, 106496 bytes

          - broadcasts, - multicasts

 Input:  0 input errors, 0 runts, 0 giants,  0 throttles, 0 CRC    

          0 frame,  0 overruns, - aborts, 0 ignored, - parity errors 

 Output(total): 85 packets, 5440 bytes

          0 broadcasts, 85 multicasts, 0 pauses

 Output(normal): 85 packets, 5440 bytes

          - broadcasts, - multicasts, 0 pauses

 Output: 0 output errors,  - underruns, - buffer failures

          0 aborts, 0 deferred, - collisions, 0 late collisions

          - lost carrier, - no carrier  

# 看debuging信息，也可以清楚的看出状态，看到vlan10、20、100、40、50都join进来了：

*0.9074485 Quidway VLAN/8/debug_case:

Tx GVRP message on port Ethernet3/1/1

*0.9074585 Quidway VLAN/8/Garp event:

Vlan Attribute, Event = Leave All, VLAN Id = No Vlan

*0.9074733 Quidway VLAN/8/debug_case:

Rx GVRP message on port Ethernet3/1/1   

*0.9074827 Quidway VLAN/8/Garp event: 

Vlan Attribute, Event = Join In, VLAN Id = 1

*0.9074938 Quidway VLAN/8/Garp event:

Vlan Attribute, Event = Join Empty, VLAN Id = 10

*0.9075050 Quidway VLAN/8/Garp event:

Vlan Attribute, Event = Join Empty, VLAN Id = 20

*0.9075160 Quidway VLAN/8/Garp event:

Vlan Attribute, Event = Join Empty, VLAN Id = 100

*0.9075271 Quidway VLAN/8/debug_case: 

Tx GVRP message on port Ethernet3/1/1

*0.9075373 Quidway VLAN/8/Garp event:

Vlan Attribute, Event = Join In, VLAN Id = 1

*0.9075484 Quidway VLAN/8/Garp event:

Vlan Attribute, Event = Join Empty, VLAN Id = 40

*0.9075595 Quidway VLAN/8/Garp event:

Vlan Attribute, Event = Join Empty, VLAN Id = 50