3com WXR100 3CRWXR10095A User Manual

When configuring a distributed MAP with static IP information, you can 
specify the following information:

a IP address, subnet mask, default gateway router, and whether the 

configured static IP address information is enabled for the MAP.

b The IP address of a suitable WX switch for the MAP to use as a boot 

device.

c The fully qualified domain name of a WX switch to use as a boot 

device, and the IP address of a DNS server used to resolve the WX 
switch’s name.

This information is used in the following way when the MAP attempts to 
contact a WX switch:

1 If Items A and B (but not Item C) are specified, and the WX switch’s IP 

address is part of the local subnet, then the AMP sends an ARP request 
for its configured static IP address, to ensure that it is not already in use in 
the network. The MAP then sends a Find WX message to UDP port 5000 
at the WX switch’s IP address.

„

If the MAP receives a response from that address, it sends a unicast 
message to the WX switch, to request an operational image.

„

If the MAP does not get a response, then it sends a Find WX message 
to UDP port 5000 on the subnet broadcast address.

„

If the MAP receives a response to the broadcast Find WX message, 
then the process continues using the procedure described under 
“How a Distributed MAP Contacts a WX Switch (DHCP-Obtained 
Address)” on page 190.

„

If there is no response to the broadcast Find WX message, then the 
process skips to step 4 on page 191.

„

If the WX switch is not part of the local subnet, then the MAP uses the 
default gateway router address to contact the WX switch.

2 If Item A, but not Item B is specified, then the MAP uses the specified 

static IP configuration, and broadcasts a Find WX message to the subnet.

„

If the MAP receives a response to the broadcast Find WX message, 
then the process continues using the procedure described under 
“How a Distributed MAP Contacts a WX Switch (DHCP-Obtained 
Address)” on page 190.