Black-box 5000 User Manual download pdf (Page 156)

Multiserver 5000

154

11.7 Link Administration

RESET

If a link is not working properly (interconnect,

mux, or X.21), it can be reset. If the other end of

the link is a feeder mux, the mux will also reset. All

channels currently using the link will experience a

temporary interruption. See Section 11.1, Reset,

and Table 11-1 for more information on this

procedure.

TATUS/STATISTICS

The following options of the Status/Statistics Menu

provide link information:

Option Description

1. Node Lists the current node IDs and

Status numbers, ports and link types of

the nodes attached to the local

unit. See Section 8.8, Review

Link Configuration, for

information on this option.

7. System Provides the the option of a

Statistics demand or period report on the

system which includes the

following link information:

frame counts, utilization of

composite and buffers,

retransmits, and line alarms.

System Statistics also gives the

time (in seconds) for system flow

control, sync loss, and CD

(carrier) loss. For X.21 links, it

displays the number of call

attempts across the link.

Refer to Section 11.6, Status/Statistics, for a

complete discussion on the Status/Statistics menu.

HANNEL PRIORITY OVER THE LINK

By default, integral voice/fax channels have the

highest priority for transmission across the link,

followed by sync data channels. LAN and async data

channels are next, and they are of equal priority.

This priority scheme minimizes delay for voice/fax

and sync connections.

NOTE: There is one exception. Sync channels that

use TDM protocol have higher priority than

voice channels. This is because a certain

amount of bandwidth (the configured baud

rate) is always reserved for the channel,

regardless of its activity.

There are occasions when a sync channel may need

to have bandwidth priority over voice/fax. To

accomplish this, it is necessary to configure the sync

channel (both local and remote ports) for high

priority. (The option number depends upon the

sync protocol used. See Section 9.2, Synchronous

Channels, and Tables 9-2 and 9-3.) Configure the

voice/fax channel for low priority (refer to the MS1

Voice/Fax Card User’s Manual). For sync and

voice/fax channels to have equal priority, set them

both for high priority.

NOTE: A sync channel(s) configured as TDM

protocol has reserved bandwidth which is

not shared. The priority function noted

above does not apply to channel(s)

configured for TDM.

11.8 Channel Administration

Occasionally a data channel must be removed from

service, reset, reconfigured, or returned to service.

For instance, a channel may need to be removed

from service so that periodic maintenance may be

done on the attached device.

To reset a channel, refer to Section 11.1, Reset, and

Table 11-1.

To remove an async port from service or return it to

service, use the Switching Control Menu. Enable

Channel and Disable Channel are two options on

that menu. See Section 10.1, Switching Control, and

Table 10-1 for information on these procedures.

1 2 ... 151 152 153 154 155 156 157 158 159 160 161 ... 267 268

Comments to this Manuals

No comments

Black-box 5000 User Manual Page 156

Comments to this Manuals