This chapter explains
This section explains how to display configuration and operation parameters and statistics using the command-line interface and the Internet browser interface, in separate subsections.
Table 5-1 gives commands for displaying parameters. Any user can enter these commands, except for zero all, which requires privileged status.
Table 5-1. Commands for Obtaining Parameters
Operation | Command at Server> Prompt |
|---|---|
Display configuration parameters for the hub | show hub |
Display configuration parameters for the hub ports | show hub ports |
Display configuration parameters for the hub manager | show server |
Display configuration parameters for the hub and hub manager | show server config |
Display configuration parameters for the hub manager | show server network |
Display TCP/IP parameters for the hub manager | show server tcp |
Reset counters for error count and down count in show hub ports output | zero all |
 | Note: Cascading hubs does not affect hub address or port numbering in the management interfaces. That is, to get information on ports on cascaded hubs, you log in to each hub the same as if it were not cascaded. Segmenting hubs also does not affect port numbering in the management interfaces. |
The following is example output for the show hub command.
- Current Hub Status -------------------------------------------------
Hub Parameters Upper: Lower:
Auto Bypass Interval: 10 10
Error Threshold: 07 07
LIP F8 Primitive 1: BC95B5B5 BC95B5B5
Primitive 2: BC15F0F0 BC15F0F0
SYNC Loss Timeout: 60 60
Microsecond Timer: 4FB 4FB
Millisecond Timer: 2EE 2EE
Second Timer: 35 35
Hub Configuration: 10 Port
Port Status:
1 active 6 auto bypass
2 active 7 active
3 active 8 active
4 active 9 active
5 active 10 active
-----------------------------------------------------------------------
|
The following is example output for the show hub ports command.
- Current Hub Port Status ---------------------------------------------
Port Status LIP F8 AutoLIP Error Down Elapsed Time
Bypass Insert Count Count d hh:mm:ss
1 active enabled enabled 0 0 2 03:07:59
2 active enabled enabled 769 23 2 03:07:59
3 active enabled enabled >347 1 2 03:07:59
4 active enabled enabled 29 1 2 03:07:59
5 active enabled enabled >1467547 102 2 03:07:59
6 auto bypass enabled enabled 0 0 2 03:07:59
7 active enabled enabled 330 26 2 03:07:59
8 active enabled enabled 80 8 2 03:07:59
9 active enabled enabled 368 26 2 03:07:59
10 active enabled enabled >21767 275 2 03:07:59
-----------------------------------------------------------------------
|
In the show hub ports output, Down Count is the number of times a port was automatically bypassed. Error and down counts are cumulative since the last reset.
To reset the counters for the error and down counts, a user with privileged status enters zero all.
The following is example output for the show server command.
Server Information
Product: HUB Manager
Hardware: A.41
Firmware: (SL) 5.01n5 980810
Software: 7.2 980915
Console Port: 2
Load Type: Selfload
Uptime: 184199 (2 03:09:59)
|
The following is example output for the show server config command.
Network Interface Configuration For Ethernet
Server Information
Product: HUB Manager
Hardware: A.41
Firmware: (SL) 5.01n5 980810
Software: 7.2 980915
Console Port: 2
Load Type: Selfload
Uptime: 184213 (2 03:10:13)
Network Information
Node Name: DHM0A2908
MAC Address: 08-00-69-xx-xx-xx
Circuit Timer (ms): 80
Protocols:
TCP/IP
TCP/IP Information
IP Addr: 128.1.000.000
Subnet Mask: 255.255.255.0
Gateway: 128.2.000.000
BOOTP: 0 0 temp
DHCP: 0 0 temp
RARP: 0 0 temp
Port Configuration
1 Digital HUB
Access: remote Queuing: disabled
Bypass Interval: 10 Error Threshold: 7
2 Serial - full modem Type: softcopy
Access: dynamic Queuing: disabled
Modem: disabled Speed: 9600
DSRlogout: disabled Signal Check: disabled
Char Size: 8 Parity: none
Autobaud: disabled Flow Control: xon
3 Transparent Gateway Type: softcopy
Access: virtual
4 Remote Console Type: ansi
Access: remote
Service Configuration
Name: http
Port(s): 3 Protocol(s): TCP
Queueing: enabled Connections: enabled
Password: disabled Telnet: disabled
Filter: disabled TCP Port: 80
Name: telnet
Port(s): 4 Protocol(s): TCP
Queueing: disabled Connections: enabled
Password: disabled Telnet: enabled
Filter: disabled TCP Port: 23
|
The following is example output for the show server network command.
Network Information
Node Name: DHM0A2908
MAC Address: 08-00-69-xx-xx-xx
Circuit Timer (ms): 80
Protocols:
TCP/IP
|
The following is example output for the show server tcp command.
TCP/IP Information
IP Addr: 128.1.000.000
Subnet Mask: 255.255.255.0
Gateway: 128.2.000.000
BOOTP: 0 0 temp
DHCP: 0 0 temp
RARP: 0 0 temp
|
The Hub Manager Internet browser screen displays hub port statistics; Figure 5-1 shows an example.
To view statistics for a particular port, click on the port or its LED in the hub map, or click on the entry for the port in the Status column. Figure 5-2 shows an example.
| Note: The default settings in this screen are the recommended settings. |
In this screen:
Summary status shows the basic status of the port, as it is also shown in the Hub Port Status screen.
Configured as Enabled is checked if the port has not been administratively disabled for use.
Configured as Autobypass during LIP F8 is checked if the port has been configured to automatically bypass while it is streaming LIP F8 characters. (See “Automatic LIP F8 Word Substitution and Bypass” in Chapter 1 for an explanation of LIP F8.)
Configured as AutoLIP (Originate LIP F7 on insertion) is checked if the port has been configured to originate LIP F7 characters when it inserts into the loop. (See “Automatic Loop Reconfiguration” in Chapter 1 for an explanation of LIP F7.)
You can change the settings in the three configuration check boxes; see “Bypassing Ports” for instructions.
Counts:
Error Count is the number of invalid transmission words received on this port.
Bypass Count is the number of times the port was automatically bypassed.
Elapsed Time is the time since the last port counter reset.
Clicking reset counters at the lower left restarts these counters at 0.
You can use this screen to change port configuration parameters by clicking Port Setup at the lower left; the Port Setup screen for that port appears. Figure 5-7 on page 69 shows an example.
To view information on the hub and the hub manager, click Properties in the menu bar. Figure 5-3 shows an example screen.
To display more detailed hub manager information, follow these steps:
In the Hub Port Status (Figure 5-2) or Digital Hub Properties screen (Figure 5-3), click Help in the menu bar.
In the help window that appears, click Hub Manager Diagnostic Information. (Scroll down if necessary.) Figure 5-4 shows an example of the screen that is displayed.
The Fibre Channel Hub bypasses a port automatically when it receives three consecutive LIP F8 sequences from the port. This sequence is generated when the port does not receive a valid signal from the device cabled to the port, such as when a cable is replaced or a device is disconnected for routine maintenance. The hub can also bypass a port that an administrator disables. This section explains how to bypass a port using the command-line interface and the Internet browser interface, in separate subsections; it also explains how to change the default settings for LIP F8 and F7 bypass:
| Note: Bypassing a port disables access to the device connected to it; perform any required steps to prevent loss of I/O. |
To use the command-line interface to force-bypass a port, a user with administrator privilege enters
Server>>change hub port [port|all] bypass enable |
where port is the port to bypass. You can enter a number (for example, 4), a range of numbers separated by a hyphen (for example, 2-4), or a series of numbers separated by commas or single spaces (for example, 2, 4).[2] To bypass all ports on the loop, enter all. (The software does not prompt for confirmation.)
When a port is bypassed, its LED goes dark, and its status changes in the Status screen.
The following example bypasses ports 2, 3, 4, 6, and 9:
Server>>change hub port 2-4, 6, 9 bypass enable |
The following example bypasses all ports:
Server>>change hub port all bypass enable |
To disable the bypass and return the port(s) to the loop, a user with administrator privilege enters
Server>>change hub port [port|all] bypass disable |
The following example disables the bypass and returns all ports to the loop:
Server>>change hub port all bypass disable |
| Note: When a port generates three LIP F8 sequences, it is automatically bypassed by default to prevent the LIP F8 error from bringing down the entire loop. See “Changing LIP F8 and LIP F7 Settings” for relevant command-line interface information; see “Automatic LIP F8 Word Substitution and Bypass” in Chapter 1 for information on the LIP F8 sequence. |
| Note: Bypassing a port disables access to the device connected to it; perform any required steps to prevent loss of I/O. |
To use the Internet browser interface to force-bypass a port, follow these steps:
Do one of the following:
In the hub map (in any screen it appears), click on the port or its LED; in the Detailed Status screen that appears, click Port Setup at the lower left.
In the Status window, click on the entry for the port in the Status column; in the Detailed Status screen that appears, click Port Setup at the lower left.
In the Hub Port Status screen, click Setup, and then click Hub Port Setup. In the Hub Port Selection screen that appears (see Figure 5-5), click the port you want to bypass.
All three methods display the Detailed Status screen for the port (see Figure 5-6).
Click Port Setup at the lower left to display the Port Setup screen for the port you have chosen; Figure 5-7 shows an example.
To bypass the port, click the top check box; click Apply.
At the user ID prompt that appears, enter su; at the password prompt, enter system or the current password.
When a port is force-bypassed, its LED goes dark, and its status changes in the Status screen. (When a port is bypassed because no device is cabled to it, its LED is yellow.
To use the Internet browser interface to force-bypass all ports, follow these steps:
In the Hub Port Status screen, click Setup, and then click Hub Setup. Figure 5-8 shows the Digital Hub Setup screen.
Check one of the lower three check boxes, depending on the type of bypass you want. Click Apply to put the change into effect.
At the user ID prompt that appears, enter su; at the password prompt, enter system or the current password.
For information on LIP F8 and F7, see “Changing LIP F8 and LIP F7 Settings”.
To use the command-line interface to bypass a port when a LIP F8 error is generated, a user with administrator privilege enters
Server>>change hub port [port|all] lipf8 enable |
This setting is the factory default.
To disable the LIP F8 bypass and return the port to the loop, a user with administrator privilege enters
Server>>change hub port [port|all] lipf8 disable |
To use the Internet browser interface for LIP F8 or AutoLIP bypass, click Setup in the menu bar, and then click Hub Setup; see Figure 5-8. In this screen, click check boxes as follows:
AutoBypass during LIP F8 automatically excludes the port from the loop while it is streaming LIP F8 characters (which indicate that the attached device is not receiving a valid signal), and reinsert it if it becomes stable again.
This box is checked (on) by factory default. Three consecutive LIP F8 sequences from a port disable the entire loop.
AutoLIP (Originate LIP F7 on Insertion) automatically reconfigures the loop when a hub port becomes active.
This box is checked (on) by factory default.
For more information on the LIP F8 and LIP F7 characters, see “Fault and Error Management” in Chapter 1.
An interval is the measure of time—24 microseconds—that is examined for errors.
The default interval value is set at 10 (240 microseconds), but you can change it to any value from 1 to 15. The (error) threshold setting determines when a port is automatically bypassed for excessive errors. The default is 7, but you can set it to any value from 1 to 15.
Interval and threshold work together. For example, if the interval is 10 and the threshold is 7, ten frame times are examined for errors. If six or fewer errors are found, no corrective action is taken and transmission continues. If another interval is examined and the total number of errors reaches 7, the port is automatically bypassed. The bypassed port is reinserted if no errors occur during the next interval.
| Note: The threshold value must be equal to or less than the interval value. |
This section explains how to display and change interval and threshold settings using the command-line interface and the Internet browser interface, in separate subsections.
 | Caution: Changing these values from their factory defaults changes the behavior of the arbitrated loop, which can have disastrous consequences. Do not change these values unless you have good reason to do so. Setting threshold and interval values both to 1 disables automatic port bypass. |
To change the interval using the command-line interface, a user with administrator privilege enters
Server>>change hub interval intervalvalue |
where intervalvalue is a number from 1 to 15 (default 10).
To change the error threshold, a user with administrator privilege enters
Server>>change hub threshold thresholdvalue |
where thresholdvalue is a number from 1 to 15 (default 7).
To use the Internet browser interface to change the autobypass sample count or autobypass threshold count, click Setup in the menu bar, and then click Hub Setup. In the Digital Hub setup screen that appears, click Hub Advanced Setup at the bottom of the screen; see Figure 5-9.
In the Hub Advanced Setup screen that appears, set the autobypass sample count, the autobypass threshold count, or both; Figure 5-10 shows an example.
When the settings are the way you want them, click Apply. Enter su and password at the prompt.
| Caution: Changing these values from their factory defaults changes the behavior of the arbitrated loop, which can have disastrous consequences. Do not change these values unless you have good reason to do so. Setting both threshold and interval number to 1 disables automatic port bypass. |
The hub manager's name is used in certain commands and by host-initiated connections. This name must be different from all other hub names on the same local network.
Using the command-line interface, a user with administrator privilege can replace the default hub manager name, as follows:
Server>>define server name newname |
where newname is a string of 1 to 47 letters or numerals, in any combination. The default is DHMxxxxxx, where xxxxxx is the last six digits of the MAC address without the dashes.