橋接網絡一般是解決光纖無法到達的無奈之舉，Cisco的橋接鏈路技術比較成熟，穩(wěn)定性實測還可以，用的也很普遍。
本文介紹Cisco FAT AP橋接配置實例，我使用的是3臺Cisco 1532E 胖AP，軟件版本是C1530 Software (ap1g3-K9W7-M), Version 15.2(4)JB3b，其它版本也應該通用。
邏輯拓撲圖

配置實例
本文只列舉了5.8G橋接的主要配置信息，2.4G橋接同理。

root AP配置
dot11 ssid TEST5G
authentication open
authentication key-management wpa version 2
wpa-psk ascii passwd5G

interface Dot11Radio1
no ip address
encryption mode ciphers aes-ccm
ssid TEST5G
antenna gain 0
peakdetect
dfs band 3 block
packet retries 64 drop-packet
channel 5765
station-role root bridge
bridge-group 1
bridge-group 1 spanning-disabled

interface BVI1
ip address 172.17.50.111 255.255.255.0

ip default-gateway 172.17.50.1
其它常規(guī)配置：略

以上配置的SSID，加密類型，channel，station-role 可根據需要自行修改。
station-role幾種常用的選擇如下：
station-role root bridge
station-role root bridge wireless-clients
station-role root access-point
station-role root ap-only

mesh1 AP配置
dot11 ssid TEST5G
authentication open
authentication key-management wpa version 2
wpa-psk ascii passwd5G

interface Dot11Radio1
no ip address
encryption mode ciphers aes-ccm
ssid TEST5G
antenna gain 0
peakdetect
packet retries 64 drop-packet
station-role non-root bridge
bridge-group 1
bridge-group 1 spanning-disabled

interface BVI1
ip address 172.17.50.222 255.255.255.0

ip default-gateway 172.17.50.1
其它常規(guī)配置：略

以上配置的SSID，加密類型，station-role 同樣也可根據需要自行修改。
station-role幾種常用的選擇如下：
station-role non-root bridge
station-role non-root bridge wireless-clients
station-role non-root wireless-clients
station-role workgroup-bridge

mesh2 AP配置
同mesh1 AP配置，略

橋接鏈路檢查
配置完成后，在root AP上查看，可以看到我的兩臺mesh AP都已橋接到root AP上。
Root-1532E#show cdp neighbors
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone,
D - Remote, C - CVTA, M - Two-port Mac Relay

Device ID Local Intrfce Holdtme Capability Platform Port ID
Mesh1-1532E Vi-Dot11 1 147 T I AIR-SAP15 Vi-Dot11 0
Mesh2-1532E Vi-Dot11 0 167 T I AIR-SAP15 Vi-Dot11 0
測試橋接鏈路信號質量
Root-1532E#show dot11 associations
802.11 Client Stations on Dot11Radio1:
SSID [WPWGB5G] :
MAC Address IP address IPV6 address Device Name Parent State
bc16.f59e.xxx1 0.0.0.0 :: Br-client - bc16.f5a0.xxx1 Assoc
bc16.f5a0.xxx2 172.17.50.107 :: bridge Mesh1-1532E self Assoc
bc16.f5a1.xxx3 172.17.50.110 :: bridge Mesh2-1532E self Assoc
Root-1532E#dot11 dot11Radio 1 linktest target bc16.f5a0.xxx2
Root-1532E#terminal monitor
Root-1532E#dot11 dot11Radio 1 linktest
Start linktest to bc16.f5a0.xxx2, 100 512 byte packets

GOOD (2 % retries) Time Strength(dBm) SNR SNR Retries
msec In Out In Out In Out
Sent : 100, Avg 0 - 28 - 31 58 56 Tot: 0 4
Lost to Tgt: 0, Max 4 - 28 - 31 59 57 Max: 0 1
Lost to Src: 0, Min 0 - 29 - 33 58 55
Rates (Src/Tgt) mcs4 100/100
Linktest Done in 0.084 msec
通過以上測試，就可以知道Root AP和Mesh AP的信號強度，信噪比，重傳率等信息。