Chapter 5. Bridging Two Ethernet Networks
20
Configuring Access Point Bridging and Repeating (WLAP Mode)
5.2.2 Sequence of Events in Special Network
In the example network in Figure 5-4, the following events occur if access point A loses its Ethernet
connection:
•
Access point A loses its Ethernet connection then turns off its radio.
•
Access point B loses the beacon message from access point A, but it keeps probing access
point A (Send Probe state).
•
Access Point B then stops sending the WLAP-Alive-BPDU message on the cross-over
Ethernet cable.
•
Access Point C loses the WLAP-Alive-BPDU message then turns off its radio. The Ethernet
Activity LED indicator flashes approximately once every second until the Ethernet connection
is restored. With a lost Ethernet connection, the WLAP RF Statistics screen displays the
Current State as “WLAP Lost on Ethernet” and the Wireless Interface (Itf) State as data
blocked (BLK). An example screen is shown in Figure 5-6.
•
Access Point D loses the beacon message from access point C, but keeps probing access point
C (Send Probe state).
•
Mobile unit loses beacon message from access point D, then roams to access point H.
1
2
3
6
1
2
3
6
T
Transmit–
Receive–
Pins 4, 5, 7 and 8 are not used.
T
Transmit–
Receive–
Figure 5-5: Wiring Connections of Cross-Over 10BaseT Cable
Figure 5-6: States of Access Point C with Timeout 3 & Lost Ethernet
Access Point C
WLAP RF Statistics
Current # WLAP
Itf
1
Root Interface
0
Root Priority
8000 hex
Current State
WLAP Lost on Ethernet
Root MAC Addr
00:A0:F8:94:C3:64
Priority
8000 hex
Root Path Cost
0
-------------
Wireless AP Interface Table
---------------
Itf
WLAP Itf
Itf
Path
Designated
Designated
ID
MAC Addr
State
Cost
Root ID
Cost
WLAP ID
Itf ID
8001 00:A0:F8:94:C2:04
BLK
1
800000a0f894C364
0
800000a0f894C364
8001
8002 00:00:00:00:00:00
DIS
1
800000a0f894C364
0
800000a0f894C364
8002
8003 00:00:00:00:00:00
DIS
1
800000a0f894C364
0
800000a0f894C364
8003
8004 00:00:00:00:00:00
DIS
1
800000a0f894C364
0
800000a0f894C364
8004
Refresh-[F1]
Timed-[F2]
Previous-[F4]
Exit-[ESC]
