ZyXEL Communications P-660HN-TxA - Manual (Page 78)

Chapter 6 WAN Setup
P-660HN-TxA User’s Guide
78
The following table describes the labels in this screen.
Table 17 Network > WAN > Internet Access Setup: Advanced Setup
LABEL DESCRIPTION
RIP & Multicast
Setup This section is not available when you configure the ZyXEL Device to
be in bridge mode.
RIP Direction RIP (Routing Information Protocol) allows a router to exchange
routing information with other routers. Use this field to control how
much routing information the ZyXEL Device sends and receives on the
subnet.
Select the RIP direction from None, Both, In Only and Out Only.
RIP Version This field is not configurable if you select None in the RIP Direction
field.
Select the RIP version from RIP-1, RIP-2B and RIP-2M.
Multicast Multicast packets are sent to a group of computers on the LAN and are
an alternative to unicast packets (packets sent to one computer) and
broadcast packets (packets sent to every computer).
Internet Group Multicast Protocol (IGMP) is a network-layer protocol
used to establish membership in a multicast group. The ZyXEL Device
supports IGMP-v1, IGMP-v2 and IGMP-v3. Select None to disable
it.
ATM QoS
ATM QoS Type
Select CBR (Continuous Bit Rate) to specify fixed (always-on)
bandwidth for voice or data traffic. Select UBR (Unspecified Bit Rate)
for applications that are non-time sensitive, such as e-mail. Select
rtVBR (real-time Variable Bit Rate) type for applications with bursty
connections that require closely controlled delay and delay variation.
Select nrtVBR (non real-time Variable Bit Rate) type for connections
that do not require closely controlled delay and delay variation.
Peak Cell Rate Divide the DSL line rate (bps) by 424 (the size of an ATM cell) to find
the Peak Cell Rate (PCR). This is the maximum rate at which the
sender can send cells. Type the PCR here.
Sustain Cell
Rate
The Sustain Cell Rate (SCR) sets the average cell rate (long-term)
that can be transmitted. Type the SCR, which must be less than the
PCR. Note that system default is 0 cells/sec.
Maximum
Burst Size
Maximum Burst Size (MBS) refers to the maximum number of cells
that can be sent at the peak rate. Type the MBS, which is less than
65535.
MTU
MTU
The Maximum Transmission Unit (MTU) defines the size of the largest
packet allowed on an interface or connection. Enter the MTU in this
field.
For ENET ENCAP, the MTU value is 1500.
For PPPoE, the MTU value is 1492.
For PPPoA and RFC 1483, the MTU is 65535.
Back Click this to return to the previous screen without saving.