現(xiàn)在越來越多的企業(yè)都有自己的無線網絡，而無線網絡的組網方式一般都是使用AC+AP模式進行組網，使用無線網絡能夠提供經濟、高效的網絡接入方式。相比有線網絡，無線網絡下只要能接入無線網的地方都可以使用網絡，用戶可以自由移動。而對于AC+AP組網方式來說，轉發(fā)模式分為本地轉發(fā)（流量到達AP后直接轉發(fā)）和集中轉發(fā)（流量通過隧道到達AC，由AC集中轉發(fā)）。

實驗拓撲及說明

說明：1、SW1和SW2作為AP的DHCP服務器為AP分配IP地址（AP），AC作為STA的DHCP服務器為STA分配IP地址。

2、STA1采用集中轉發(fā)模式，STA2采用本地轉發(fā)模式

3、遠程網絡3.3.3.3位于IP NETWORK路由器上，用于測試數據流向

配置過程略：（文章末尾會附配置文件）

實驗現(xiàn)象：1、AP通過交換機SW拿到地址，用于與AC等的通信

2、AP發(fā)出兩個wlan信號，一個local-forward，一個center-forward

3、STA1連接local-forward信號，這個wlan使用的是本地轉發(fā)模式工作，業(yè)務地址是192.168.1.0/24段。

4、STA2連接center-forward信號，這個wlan使用的是集中轉發(fā)模式工作，業(yè)務地址是192.168.2.0/24段。

5、在遠端路由器上開debug，然后在SW與AC之間使用抓包工具抓包，使用集中轉發(fā)的wlan信號時，流量會經過AC轉發(fā)，流量到達AP之后通過隧道傳給AC，由AC轉發(fā)。

6、使用本地轉發(fā)的wlan信號時，流量不會經過AC轉發(fā)，流量到達AP之后不會封裝進隧道發(fā)送給AC，而是直接由AP轉發(fā)。

7、配置文件：

IPNET:

sysname IPNET

interface GigabitEthernet0/0/0

ip address 10.0.12.2 255.255.255.0

#

interface GigabitEthernet0/0/1

ip address 10.0.22.2 255.255.255.0

#

interface NULL0

#

interface LoopBack0

ip address 3.3.3.3 255.255.255.255

#

rip 1

undo summary

version 2

network 10.0.0.0

import-route direct

SW1：

sysname SW1

#

vlan batch 10 100 to 102 1000

#

stp instance 0 root primary

stp instance 1 root secondary

#

dhcp enable

#

stp region-configuration

region-name abc

instance 1 vlan 101

active region-configuration

#

ip pool vlan10

gateway-list 10.0.1.254

network 10.0.1.0 mask 255.255.255.0

option 43 sub-option 2 ip-address 10.0.1.3 10.0.1.4

#

interface Vlanif10

ip address 10.0.1.1 255.255.255.0

vrrp vrid 10 virtual-ip 10.0.1.254

vrrp vrid 10 priority 120

dhcp select global

#

interface Vlanif100

ip address 192.168.1.252 255.255.255.0

vrrp vrid 100 virtual-ip 192.168.1.254

vrrp vrid 100 priority 120

#

interface Vlanif101

ip address 192.168.2.252 255.255.255.0

vrrp vrid 101 virtual-ip 192.168.2.254

#

interface Vlanif1000

ip address 10.0.12.1 255.255.255.0

#

interface MEth0/0/1

#

interface GigabitEthernet0/0/1

port link-type access

port default vlan 1000

stp disable

#

interface GigabitEthernet0/0/2

port link-type trunk

port trunk allow-pass vlan 2 to 4094

stp disable

#

interface GigabitEthernet0/0/3

port link-type trunk

port trunk allow-pass vlan 2 to 4094

#

interface GigabitEthernet0/0/24

port link-type trunk

port trunk allow-pass vlan 2 to 4094

#

interface NULL0

#

rip 1

undo summary

version 2

network 10.0.0.0

network 192.168.1.0

network 192.168.2.0

silent-interface GigabitEthernet0/0/2

silent-interface GigabitEthernet0/0/3

SW2：

sysname SW2

#

vlan batch 10 100 to 101 1001

#

stp instance 0 root secondary

stp instance 1 root primary

#

dhcp enable

#

stp region-configuration

region-name abc

instance 1 vlan 101

active region-configuration

#

ip pool vlan10

gateway-list 10.0.1.254

network 10.0.1.0 mask 255.255.255.0

option 43 sub-option 2 ip-address 10.0.1.3 10.0.1.4

#

interface Vlanif10

ip address 10.0.1.2 255.255.255.0

vrrp vrid 10 virtual-ip 10.0.1.254

dhcp select global

#

interface Vlanif100

ip address 192.168.1.253 255.255.255.0

vrrp vrid 100 virtual-ip 192.168.1.254

#

interface Vlanif101

ip address 192.168.2.253 255.255.255.0

vrrp vrid 101 virtual-ip 192.168.2.254

vrrp vrid 101 priority 120

#

interface Vlanif1001

ip address 10.0.22.1 255.255.255.0

#

interface MEth0/0/1

#

interface GigabitEthernet0/0/1

port link-type access

port default vlan 1001

stp disable

#

interface GigabitEthernet0/0/2

port link-type trunk

port trunk allow-pass vlan 2 to 4094

stp disable

#

interface GigabitEthernet0/0/3

port link-type trunk

port trunk allow-pass vlan 2 to 4094

#

interface GigabitEthernet0/0/24

port link-type trunk

port trunk allow-pass vlan 2 to 4094

#

interface NULL0

#

rip 1

undo summary

version 2

network 10.0.0.0

network 192.168.1.0

network 192.168.2.0

silent-interface GigabitEthernet0/0/2

silent-interface GigabitEthernet0/0/3

AC1：

sysname AC1

#

vlan batch 10 100 to 101

#

dhcp enable

#

ip pool vlan100

gateway-list 192.168.1.254

network 192.168.1.0 mask 255.255.255.0

#

ip pool vlan101

gateway-list 192.168.2.254

network 192.168.2.0 mask 255.255.255.0

#

interface Vlanif10

ip address 10.0.1.3 255.255.255.0

#

interface Vlanif100

ip address 192.168.1.250 255.255.255.0

dhcp select global

#

interface Vlanif101

ip address 192.168.2.250 255.255.255.0

dhcp select global

#

interface MEth0/0/1

undo negotiation auto

duplex half

#

interface GigabitEthernet0/0/1

port link-type trunk

port trunk allow-pass vlan 2 to 4094

#

ip route-static 0.0.0.0 0.0.0.0 10.0.1.254

#

capwap source interface vlanif10

#

wlan

security-profile name wlan-net

ssid-profile name local

ssid local-forward

ssid-profile name center

ssid center-forward

vap-profile name local

service-vlan vlan-id 100

ssid-profile local

security-profile wlan-net

vap-profile name center

forward-mode tunnel

service-vlan vlan-id 101

ssid-profile center

security-profile wlan-net

ap-group name local

radio 0

vap-profile local wlan 1

radio 1

vap-profile center wlan 2

ap-id 0 type-id 56 ap-mac 00e0-fc3e-6f60

ap-name area_1

ap-group local

radio 0

channel 20mhz 6

eirp 127

radio 1

channel 20mhz 149

eirp 127

AC2：

sysname AC2

#

vlan batch 10 100 to 101

#

dhcp enable

#

ip pool vlan100

gateway-list 192.168.1.254

network 192.168.1.0 mask 255.255.255.0

#

ip pool vlan101

gateway-list 192.168.2.254

network 192.168.2.0 mask 255.255.255.0

#

interface Vlanif10

ip address 10.0.1.4 255.255.255.0

#

interface Vlanif100

ip address 192.168.1.251 255.255.255.0

dhcp select global

#

interface Vlanif101

ip address 192.168.2.251 255.255.255.0

dhcp select global

#

interface MEth0/0/1

undo negotiation auto

duplex half

#

interface GigabitEthernet0/0/1

port link-type trunk

port trunk allow-pass vlan 2 to 4094

#

ip route-static 0.0.0.0 0.0.0.0 10.0.1.254

#

capwap source interface vlanif10

#

wlan

security-profile name wlan-net

ssid-profile name local

ssid local-forward

ssid-profile name center

ssid center-forward

vap-profile name local

service-vlan vlan-id 100

ssid-profile local

security-profile wlan-net

vap-profile name center

forward-mode tunnel

service-vlan vlan-id 101

ssid-profile center

security-profile wlan-net

ap-group name local

radio 0

vap-profile local wlan 1

radio 1

vap-profile center wlan 2

ap-id 0 type-id 56 ap-mac 00e0-fc3e-6f60

ap-name area_1

ap-group local

radio 0

channel 20mhz 6

eirp 127

radio 1

channel 20mhz 149

eirp 127

總結

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