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198 CHAPTER 10: CONFIGURING MAP ACCESS POINTS
Example MAP Boot
over Layer 3
Network
Figure 15 shows an example of the boot process for a MAP connected
through a Layer 3 network.
Figure 15 MAP Booting over Layer 3 Network
1 The MAP sends DHCP Discover message from the MAP’s port 1.
2 The DHCP server replies with a DHCP Offer message containing an IP
address for the MAP, the default router IP address for the MAP’s IP
subnet, the DNS server address, and the domain name. MAP then sends a
DHCP Request message to the server and receives an Ack from the server.
3 The MAP sends a broadcast Find WX message to the IP subnet broadcast
address.
4 When the MAP is unable to locate a WX on the subnet it is connected to,
the MAP then sends a DNS request for 3com.example.com and
wlan.example.com.
Router
Router
System IP address
10.10.10.4
WX
1
Layer 2
System IP address
10.10.40.4
WX
2
Layer 2
System IP address
10.10.50.4
WX
3
DHCP Server
2
5
8
DAP 1
serial_id M9DE48B123400
model AP2750
bias = high
DAP 1
serial_id M9DE48B123400
model AP2750
bias = low
serial_id M9DE48B123400
model AP2750
3
4
6
7
1
3COMWX.example.com =
10.10.10.4
DNS Server
Layer 2
DAP 1
serial_id M9DE48B123400
model AP2750
bias = low
MAP