Black Box LWN602A User Manual page 88

Chapter 8: Basic Configuration Examples
• If SmartPath EMS continues to use its default domain name ("clustermanager") plus the name of the local domain to which it
and the SmartPath APs belong, configure an authoritative DNS server with an A record that resolves "clustermanager.<local_
domain>" to an IP address. If a SmartPath AP does not have an IP address or domain name configured for the CAPWAP server
and does not receive an address or a domain name returned in a DHCP option, then it tries to resolve the domain name to an IP
address.
If you are using SmartPath EMS Online instead of a physical SmartPath EMS appliance or SmartPath EMS Virtual Appliance and
the SmartPath APs go on-line for the first time without any specific CAPWAP server configuration entered manually or received as
a DHCP option, they progress through the following cycle of CAPWAP connection attempts. First, they try to connect with a
CAPWAP server at clustermanager.<local_domain>. If that is unsuccessful, they next try to elicit a response from the broadcast of
CAPWAP Discovery messages on their local subnet. If neither of these efforts produces a response, they try to connect to
SmartPath EMS Online, first using the CAPWAP UDP port 12222 and then using CAPWAP over the HTTP TCP port of 80. This
cycle is shown in Figure 8-7.
1. If the DNS server cannot resolve the domain name to an IP address, the SmartPath AP broadcasts CAPWAP Discovery messages
on its local subnet for a CAPWAP server (SmartPath EMS). If SmartPath EMS is on the local network and responds, they form a
secure CAPWAP connection.
The SmartPath AP tries to connect to SmartPath EMS using the following default domain name: smartpathEMS.<local_domain>,
where "<local_domain>" is the domain name that a DHCP server supplied to the SmartPath AP.
If a DNS server has been configured with an A record to resolve that domain name to an IP address, the SmartPath AP and
SmartPath EMS then form a secure CAPWAP connection.
If the first two searches for a local SmartPath EMS produce no results, the SmartPath AP broadens its search even wider and tries
to contact SmartPath EMS Online at SmartPath.blackbox.com:12222. If the online server has a serial number or MAC address for
that SmartPath AP, it responds and they form a secure CAPWAP connection.
If the SmartPath AP cannot make a CAPWAP connection to SmartPath EMS Online using UDP Port 12222, it tries to reach it by
using TCP Port 80:smartpath.blackbox.com:80. If that proves unsuccessful, the SmartPath AP returns to its initial search through a
DNS lookup and repeats the cycle.
1
The SmartPath AP tries to con- The SmartPath AP tries to connect to
nect to SmartPath EMS using the
SmartPath EMS using the following
following default domain name: default domain name:
clustermanager_<local_domain>, hivemanager.<local_domain>,
where "<local_domain>" is the where "<local_domain>" is the
domain name that a DHCP server domain name that a DHCP
server supplied to the SmartPath
supplied to the SmartPath AP. If
AP. If a DNS server has been
a DNS server has been config-
configured with an A record to
ured with an A record to resolve
resolve that domain name to an
that domain name to an IP
IP address, the SmartPath AP
address, the SmartPath AP and
and SmartPath EMS then form
SmartPath EMS then form a
a secure CAPWAP connection.
secure CAPWAP connection.
4
The SmartPath AP cannot make a
If the SmartPath AP cannot
CAPWAP connection to SmartPath
make a CAPWAP connection
EMS On-line using UDP port 12222,
to SmartPath EMS Online
it tries to reach it by using TCP port
using UDP port 12222, it tries to
80: smartpath.blackbox.com:80. If reach it by using TCP port 80:
that proves unsuccessful, the
staging.aerohive.com:80.
SmartPath AP returns to its initial If that proves unsuccessful,
the SmartPath AP returns to
search through a DNS lookup and
repeats the cycle. its initial search through a DNS
lookup and repeats the cycle.
Page 88
SmartPath EMS
SmartPath EMS
Online
Figure 8-7. Discovering the CAPWAP server.
724-746-5500 | blackbox.com
2
If the DNS server cannot resolve
the domain name to an IP
address, the SmartPath AP
broadcasts CAPWAP Discovery
messages on its local subnet for
a CAPWAP server (SmartPath
EMS). If SmartPath EMS is on
the local network and responds,
they form a secure CAPWAP
connection.
3
If the first two searches for a local
If the first two searches for a
SmartPath EMS produce no results,
local SmartPath EMS produce no
the SmartPath AP broadcasts its
results, the SmartPath AP
search even wider and tries to
broadens its search even wider
contact SmartPath EMS Online at
and tries to contact SmartPath
SmartPath.blackbox.com:12222. If
EMS Online at
the SmartPath.black.com has a serial
staging.aerohive.com:12222. If
number or MAC address for that
the staging server has a serial
SmartPath AP, it responds and they
number or MAC address for that
form a secure CAPWAP connection. SmartPath AP, it responds and
they form a secure CAPWAP
connection.