ZyXEL Communications VMG1312-B Series, Руководство пользователя

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Chapter 6 Broadband
VMG1312-B Series User’s Guide
89
Service
Cat egory Select UBR W it h ou t PCR or UBR W it h PCR for applicat ions t hat are non- t im e sensit ive,
such as e- m ail.
Select CBR ( Cont inuous Bit Rat e) t o specify fixed ( always- on) bandw idt h for voice or dat a
t raffic.
Select N on Re a lt im e V BR ( non real- t im e Variable Bit Rat e) for connect ions t hat do not
require closely cont rolled delay and delay variat ion.
Select Re a lt im e V BR ( real- t im e Variable Bit Rat e) for applicat ions w it h bur st y connect ions
t hat require closely cont rolled delay and delay variat ion.
Peak Cell Rat e Divide t he DSL line rat e ( bps) by 424 ( t he size of an ATM cell) t o find t he Peak Cell Rat e
( PCR) . This is t he m axim um rat e at which t he sender can send cells. Type t he PCR here.This
field is not available when you select
UBR W it h out PCR .
Sust ainable
Cell Rat e The Sust ainable Cell Rat e ( SCR) set s t he average cell rat e ( long- t erm ) t hat can be
t ransm it t ed. Type t he SCR, w hich m ust be less t han t he PCR. Not e t hat syst em default is 0
cells/ sec.
This field is available only when you select N on Re a lt im e V BR or Re a lt im e V BR .
Maxim um Bur st
Size Maxim um Burst Size ( MBS) refers t o t he m axim um num ber of cells t hat can be sent at t he
peak rat e. Type t he MBS, w hich is less t han 65535.
This field is available only when you select N on Re a lt im e V BR or Re a lt im e V BR .
PPP
I nform at ion This is available only when you select PPPoE or PPPoA in t he M ode field.
PPP User Nam e Ent er t he user nam e exact ly as your I SP assigned. I f assigned a nam e in t he form
user@dom ain
where dom ain ident ifies a service nam e, t hen ent er bot h com ponent s exact ly
as given.
PPP Passw or d Ent er t he password associat ed wit h t he user nam e above.
PPP Aut o
Connect Select t his opt ion if you do not want t he connect ion t o t im e out .
I DLE Tim eout This value specifies t he t im e in m inut es t hat elapses before t he rout er aut om at ically
disconnect s from t he PPPoE server.
This field is not configurable if you select PPP Au t o Con n e ct .
PPPoE Ser v ice
Nam e Ent er t he nam e of your PPPoE service here.
PPPoE
Passt hrough This field is available when you select PPPoE encapsulat ion.
I n addit ion t o t he Device’s built- in PPPoE client , you can enable PPPoE pass t hrough t o allow
up t o t en host s on t he LAN t o use PPPoE client soft ware on t heir com put ers t o connect t o t he
I SP via t he Device. Each host can have a separat e account and a public WAN I P address.
PPPoE pass t hrough is an alt ernat ive t o NAT for applicat ion w here NAT is not appropriat e.
Disable PPPoE pass t hrough if you do not need t o allow host s on t he LAN t o use PPPoE client
soft ware on t heir com put ers t o connect t o t he I SP.
I P Address This is available only when you select I Pv 4 Only or I Pv6 / I Pv4 D u a lSt a ck in t he I Pv 6 /
I Pv4 M ode field.
Obt ain an I P
Address
Aut om at ically A st at ic I P address is a fixed I P t hat your I SP gives you. A dynam ic I P address is not fixed;
t he I SP assigns you a different one each t im e you connect t o t he I nt ernet . Select t his if you
have a dynam ic I P address.
St at ic I P
Address Select t his opt ion I f t he I SP assigned a fixed I P address.
I P Address Ent er t he st at ic I P address provided by your I SP.
Subnet
Mask Ent er t he subnet m ask provided by your I SP.
Table 8 Rout ing Mode ( cont inued)
LABEL DESCRIPTION