User's Manual

Chapter 4 Broadband
B222s User’s Guide
36
WAN IP Address
The WAN I P address is an I P address for the LTE Device, which m akes it accessible from an outside
network. I t is used by t he LTE Device t o com m unicat e with ot her devices in ot her networks. I t can
be stat ic ( fixed) or dynam ically assigned by t he I SP each t im e the LTE Device t ries t o access t he
I nt ernet.
I f your I SP assigns you a stat ic WAN I P address, they should also assign you t he subnet m ask and
DNS server I P address(es).
APN
Access Point Nam e ( APN) is a unique st ring which indicates an LTE net work. An APN is required for
LTE stations t o ent er t he LTE net work and t hen t he I nternet .
CAPWAP
The LTE Device supports CAPWAP. This is ZyXEL’s im plem ent ation of the CAPWAP prot ocol (RFC
5415) .
The CAPWAP dat aflow is protect ed by Dat agram Transport Layer Securit y (DTLS) .
The following figure illust rat es a CAPWAP wireless network. You ( U) configure the AP cont roller ( C) ,
which then autom atically updat es the configurat ions of t he m anaged APs ( M1 ~ M 4 ).
Figure 15 CAPWAP Net work Exam ple
Note: The LTE Device can be a st andalone AP ( default ), a CAPWAP m anaged AP, or a
CAPWAP AP controller.
CAPWAP Discovery and Management
The link between CAPWAP- enabled access points proceeds as follows:
1 An AP in m anaged AP m ode j oins a wired net w ork ( receives a dynam ic I P address) .
U
C
M1 M2 M3 M4
DHCP SERVER