Cabletron Systems MMAC-Plus 9F116-01, Руководство пользователя, Страница: 97 / 420

Configuring Frame Relay 6-15
1 If rate control will not be used, configure the
Committed Information Rate
(CIR) to
match the line speed on the port. Otherwise, the DE-bit will be set on all received frames.
2 CIR = Committed Information Rate. (See first parameter in table.)
3 Applicable only on the initiating node. (See explanation.) If configuring a DLCI that will
be backed up, you must leave this value at
0
until you have configured a backup group.
Then re-enter Port Configuration on this RLP/port/DLCI and specify the desired group.
A value of
0
means that the DLCI will not be backed up; therefore, set the Group to
0
if
the DLCI will be a backup.
4 Specify N for the initiating backup DLCI and Y for the remote backup DLCI.
5 Displayed only if Backup G roup Number is a value other than 0 .
6 If set to 65535 , switchback will not occur unless the backup fails.
Port Type
defines the protocol the port will support. Selecting this parameter will display a list
of valid protocols. An FRX4000 port can be configured as any WAN protocol loaded
in the device. An FRX6000 or FRM port can be configured as any WAN protocol con-
figured on this port's RLP. (Protocol configuration is described in Chapter 4.)
Physical Port Interface
must be configured as follows. For reference, port locations are shown on page 5-1
(FRX4000), page 5-2 (FRX6000), and page 5-3 (FRM).
●
FRX4000 port 0 is always
RS-232
.
●
FRX4000 port 1 is
RS-232
or
DSU
, depending on whether the optional CSU/
DSU card is installed.
●
FRX4000 ports 2 and 3 are determined by the attached cables:
RS-232
,
V.35
,
RS-
449
, or
X.21
.
●
FRX4000 ports 4–7 are determined by the expansion Line Interface Card (LIC)
and attached I/O cables. Line Processor Configuration identifies the LIC, and
only the valid interfaces will be displayed on the Port screen, among:
RS-232,
Table 6-3 Frame Relay DLCI Parameters
Parameter Valid Values Default Value
Commi tted I nfo. Rate (In/Out)
(Kbits/sec)
0–2000
1
0
1
Commi tted Burst Size (I n/Out) (kbits) ½ CIR–16xCIR
2
CIR
Excess Burst Size (In/ Out)
(kbits)
0–32767 0
BECN Recovery Count
(packets)
1–255 8
Outgoing DLCI Pr iority 0–4 0
Backup G roup Number
3
0–255 0
Enable Backup Protocol Y/ N
4
N
Remote RLP
5
0–7 0
Remote Port
5
0–7 0
Remote DLCI
5
16–991 16
Switchover Timer
5 0–65535
(seconds)
0
Switchback Ti mer
5
0–65535
(seconds)
6
5
Ti me to Hold Data Whil e Waiting
5
0–65535
(seconds)
30