HP DTC Cabling and Racking Guide
Page 52
... ports, use appropriate cables when connecting terminals, printers and other pins connected can cause the DTC to fail its selftest and may damage the line driver. Recommended cables The cables listed below (DB25 to DB25) are present for test purposes on otherwise unused pins of the 25-pin connectors of the...
... ports, use appropriate cables when connecting terminals, printers and other pins connected can cause the DTC to fail its selftest and may damage the line driver. Recommended cables The cables listed below (DB25 to DB25) are present for test purposes on otherwise unused pins of the 25-pin connectors of the...
HP DTC Cabling and Racking Guide
Page 54
... listed below with the Modem Distribution Panel: Product number HP 40242M Product number HP 92219Q Product Number HP 13242M Product number HP 13242N Product number HP 30062B 48 6 Cables that should not be used Cables that should not be used Some terminals, such as the HP 2392A and older terminals, output a signal on pin... 23 of the cables listed below will connect these pins together, which may result in hardware damage to the pin 23 drivers on this pin. Using any of the 25-pin ...
... listed below with the Modem Distribution Panel: Product number HP 40242M Product number HP 92219Q Product Number HP 13242M Product number HP 13242N Product number HP 30062B 48 6 Cables that should not be used Cables that should not be used Some terminals, such as the HP 2392A and older terminals, output a signal on pin... 23 of the cables listed below will connect these pins together, which may result in hardware damage to the pin 23 drivers on this pin. Using any of the 25-pin ...
HP DTC Cabling and Racking Guide
Page 77
...superior performance. On a differential transmission line, ground shifts and induced noise become common mode noise. RS-423 Application Data In RS-423 Interface Data Out Single-ended data transmission is not usually possible to 100 kBaud. RS-423 RS-422 8 A note on standards The RS-423 standard (also known as ... cable lengths of 4000 feet/1200 meters at data rates less than , 30 feet/10 meters. It can be used . Consequently, an RS-423 driver can be tuned to , or less than or equal to 250 feet/80 meters. RS-423 is a recent standard is determined by the hardware used...
...superior performance. On a differential transmission line, ground shifts and induced noise become common mode noise. RS-423 Application Data In RS-423 Interface Data Out Single-ended data transmission is not usually possible to 100 kBaud. RS-423 RS-422 8 A note on standards The RS-423 standard (also known as ... cable lengths of 4000 feet/1200 meters at data rates less than , 30 feet/10 meters. It can be used . Consequently, an RS-423 driver can be tuned to , or less than or equal to 250 feet/80 meters. RS-423 is a recent standard is determined by the hardware used...
HP DTC Cabling and Racking Guide
Page 79
... RS-423 are utilised when a terminal or printer is needed to connect a driver to a receiver, four conductors are presently no RS-422 or RS-423 datacommunication cables available from its single-ended nature by the RS-422 and RS-423 standards allow the component wavelengths of...be less than the electrical length of the cable should be around 100 ohms for frequencies greater than one signal driver can benefit from Hewlett-Packard. A single driver and a single receiver are intended for long-distance connections in a pair should be treated as a transmission line. Instead, ...
... RS-423 are utilised when a terminal or printer is needed to connect a driver to a receiver, four conductors are presently no RS-422 or RS-423 datacommunication cables available from its single-ended nature by the RS-422 and RS-423 standards allow the component wavelengths of...be less than the electrical length of the cable should be around 100 ohms for frequencies greater than one signal driver can benefit from Hewlett-Packard. A single driver and a single receiver are intended for long-distance connections in a pair should be treated as a transmission line. Instead, ...
HP DTC Cabling and Racking Guide
Page 80
...RS-423 interfaces. It is advisable to connect the shield to ensure that the common mode range of the ground potential difference between the driver and receiver ground points and common mode noise. Whilst Hewlett-Packard equipment is protected against this case, the common mode voltage is de...of these effects is the common-mode voltage. The best measure of ground potential difference between the driver and receiver ground points, common mode noise, and the common mode offset (the drivers common mode voltage). According to the RS-422 standard, the common mode voltage at the system ...
...RS-423 interfaces. It is advisable to connect the shield to ensure that the common mode range of the ground potential difference between the driver and receiver ground points and common mode noise. Whilst Hewlett-Packard equipment is protected against this case, the common mode voltage is de...of these effects is the common-mode voltage. The best measure of ground potential difference between the driver and receiver ground points, common mode noise, and the common mode offset (the drivers common mode voltage). According to the RS-422 standard, the common mode voltage at the system ...
HP DLPI Programmer's Guide
Page 15
1 Introduction to DLPI Chapter 1 The Data Link Provider Interface (DLPI) is a specified set of messages and the rules that allow passage of these messages across 15 A service provider interface is an industry standard definition for message communications to STREAMS-based network interface drivers.
1 Introduction to DLPI Chapter 1 The Data Link Provider Interface (DLPI) is a specified set of messages and the rules that allow passage of these messages across 15 A service provider interface is an industry standard definition for message communications to STREAMS-based network interface drivers.
HP DLPI Programmer's Guide
Page 19
...contains definitions for the standard DLPI primitives, and dlpi_ext.h contains definitions for accessing the STREAMS DLPI LAN driver is the number of the device file formats required for the HP extended DLPI primitives. Chapter 1 19 Header Files There are present in /usr/include/sys. NOTE ...Introduction to DLPI HP DLPI Features Device File Format The description of the device. HP recommends that device file names follow the naming convention /dev/dlpiX, where X is as follows: Name ...
...contains definitions for the standard DLPI primitives, and dlpi_ext.h contains definitions for accessing the STREAMS DLPI LAN driver is the number of the device file formats required for the HP extended DLPI primitives. Chapter 1 19 Header Files There are present in /usr/include/sys. NOTE ...Introduction to DLPI HP DLPI Features Device File Format The description of the device. HP recommends that device file names follow the naming convention /dev/dlpiX, where X is as follows: Name ...
HP DLPI Programmer's Guide
Page 22
... resynchronization or connection failures. After the stream is intended to free data link users from specific knowledge of the characteristics of each data unit transmission. HP-specific extension supports Raw mode interface. Raw mode allows the DLS user to send and receive packets with no acknowledgment of the data link provider... use or provide data link services. DLPI is created, the DLS user and DLS provider communicate via messages discussed later. The stream acts as a STREAMS driver, and the DLS user accesses the provider using the putmsg(2) and getmsg(2) system calls.
... resynchronization or connection failures. After the stream is intended to free data link users from specific knowledge of the characteristics of each data unit transmission. HP-specific extension supports Raw mode interface. Raw mode allows the DLS user to send and receive packets with no acknowledgment of the data link provider... use or provide data link services. DLPI is created, the DLS user and DLS provider communicate via messages discussed later. The stream acts as a STREAMS driver, and the DLS user accesses the provider using the putmsg(2) and getmsg(2) system calls.
HP DLPI Programmer's Guide
Page 25
All communication on a per -stream basis through . For media that supports physical layer multiplexing of multiple channels over a single physical medium (such as the B and D channels of ISDN), the PPA identifier must identify which a system attaches itself to a physical communications...enable a DLS user to choose a particular PPA. If the number of enabled physical and SAP address components on that stream. For a style 2 driver, open(2) creates a stream between the DLS user and DLS provider, and the attach primitive then associates a particular PPA with that physical medium funnels ...
All communication on a per -stream basis through . For media that supports physical layer multiplexing of multiple channels over a single physical medium (such as the B and D channels of ISDN), the PPA identifier must identify which a system attaches itself to a physical communications...enable a DLS user to choose a particular PPA. If the number of enabled physical and SAP address components on that stream. For a style 2 driver, open(2) creates a stream between the DLS user and DLS provider, and the attach primitive then associates a particular PPA with that physical medium funnels ...
HP DLPI Programmer's Guide
Page 35
... point (DLSAP) with a DL_ERROR_ACK message. Binding The following protocol values are currently supported by a DLSAP address. The normal message sequence is identified by the DLPI driver: 35 The DLSAP is illustrated in Figure 1-5.
... point (DLSAP) with a DL_ERROR_ACK message. Binding The following protocol values are currently supported by a DLSAP address. The normal message sequence is identified by the DLPI driver: 35 The DLSAP is illustrated in Figure 1-5.
HP DLPI Programmer's Guide
Page 36
... bytes of organization ID and two bytes of SNAP data. IEEE802.2 SAPS and ethernet types are organization specific with valid values from 0x600 to the driver via the DL_BIND_REQ primitive. SNAP protocol values can be DL_HIERARCHICAL_BIND class) with valid values from 0-255, excluding reserved SAPS (see "Reserved IEEESAPS/Ethertypes" on page...
... bytes of organization ID and two bytes of SNAP data. IEEE802.2 SAPS and ethernet types are organization specific with valid values from 0x600 to the driver via the DL_BIND_REQ primitive. SNAP protocol values can be DL_HIERARCHICAL_BIND class) with valid values from 0-255, excluding reserved SAPS (see "Reserved IEEESAPS/Ethertypes" on page...
HP DLPI Programmer's Guide
Page 56
... zero or more M_DATA message blocks conveying user data. The primitives are defined in and . 56 Chapter 2 Before DLPI primitives can be configured as a STREAMS driver. The M_DATA block(s) contain the DLS user data that might be associated with the service primitive. • One M_PCPROTO message block containing the data link...
... zero or more M_DATA message blocks conveying user data. The primitives are defined in and . 56 Chapter 2 Before DLPI primitives can be configured as a STREAMS driver. The M_DATA block(s) contain the DLS user data that might be associated with the service primitive. • One M_PCPROTO message block containing the data link...
HP DLPI Programmer's Guide
Page 59
it conveys information on each valid PPA currently installed in the list. u_long dl_length; Response The DLPI driver responds to a DL_HP_PPA_REQ; u_long dl_offset; } dl_hp_ppa_ack_t; dl_offset offset from the beginning of the DLPI 2.0 specification. Chapter 2 DLPI Primitives Local Management Primitives The message is valid ...
it conveys information on each valid PPA currently installed in the list. u_long dl_length; Response The DLPI driver responds to a DL_HP_PPA_REQ; u_long dl_offset; } dl_hp_ppa_ack_t; dl_offset offset from the beginning of the DLPI 2.0 specification. Chapter 2 DLPI Primitives Local Management Primitives The message is valid ...
HP DLPI Programmer's Guide
Page 60
...; u_long dl_hdw_state; dl_ppa PPA # assigned to LAN interface. u_char dl_module_id_2[64]; u_long dl_reserved2; } dl_hp_ppa_info_t; dl_next_offset offset of next ppa info structure from start of interface driver. 60 Chapter 2 dl_mjr_num major number of info area. u_char dl_phys_addr[20]; u_long dl_reserved1; dl_hw_path hardware path of LAN interface. u_char dl_arpmod_name[64]; dl_mac_type MAC type...
...; u_long dl_hdw_state; dl_ppa PPA # assigned to LAN interface. u_char dl_module_id_2[64]; u_long dl_reserved2; } dl_hp_ppa_info_t; dl_next_offset offset of next ppa info structure from start of interface driver. 60 Chapter 2 dl_mjr_num major number of info area. u_char dl_phys_addr[20]; u_long dl_reserved1; dl_hw_path hardware path of LAN interface. u_char dl_arpmod_name[64]; dl_mac_type MAC type...
HP DLPI Programmer's Guide
Page 61
... name of device. Otherwise, the field is set to a stream that support multiple encapsulation types. If the driver does not have an ARP helper, this name is set to a DL_PPA_REQ. dl_instance_num instance number of driver. dl_module_id_2 optional module ID name for the stream. dl_nmid identifies the network management ID value for the...
... name of device. Otherwise, the field is set to a stream that support multiple encapsulation types. If the driver does not have an ARP helper, this name is set to a DL_PPA_REQ. dl_instance_num instance number of driver. dl_module_id_2 optional module ID name for the stream. dl_nmid identifies the network management ID value for the...
HP DLPI Programmer's Guide
Page 69
The UNIX error returned may be set to (not limited to the streams that the physical driver instance has entered the UP operational state. This message consists of one M_PCPROTO message block, which contains the following structure: Format typedef... of one M_PCPROTO message block, which contains the following structure. The receipt of this event upstream to the streams that the physical driver instance has entered the DOWN operational state. Parameters dl_primitive DL_LINK_DOWN_IND DL_LINK_UP_IND DLPI sends this event indicates that have requested for the link state...
The UNIX error returned may be set to (not limited to the streams that the physical driver instance has entered the UP operational state. This message consists of one M_PCPROTO message block, which contains the following structure: Format typedef... of one M_PCPROTO message block, which contains the following structure. The receipt of this event upstream to the streams that the physical driver instance has entered the DOWN operational state. Parameters dl_primitive DL_LINK_DOWN_IND DL_LINK_UP_IND DLPI sends this event indicates that have requested for the link state...
HP DLPI Programmer's Guide
Page 71
... to) errors listed in the DL_ERROR_ACK. Table 2-2 Error Return Values Error Criteria EPERM Permission for the control request is indicated in Table 2-2 on ), or the driver is unable to use the requested PPA. ENXIO Invalid device ENOMEM Insufficient memory EBUSY Control information is not connected. EINVAL One of the parameters has...
... to) errors listed in the DL_ERROR_ACK. Table 2-2 Error Return Values Error Criteria EPERM Permission for the control request is indicated in Table 2-2 on ), or the driver is unable to use the requested PPA. ENXIO Invalid device ENOMEM Insufficient memory EBUSY Control information is not connected. EINVAL One of the parameters has...
HP DLPI Programmer's Guide
Page 90
... message block, which contains the following structure: typedef struct { uint32_t dl_primitive; } dl_hp_reset_stats_req_t; Security Containment With the Security Containment product version B.11.23.01 or later, HP DLPI will allow network related administrative tasks such as resetting the statistics on the interface only for more details. Format The message consists of an... not limited to ) errors listed in the dl_unix_errno element of the dl_error_ack_t structure. DLPI Primitives Local Management Primitives DL_SYSERR A system error has occurred, because the driver returned an error.
... message block, which contains the following structure: typedef struct { uint32_t dl_primitive; } dl_hp_reset_stats_req_t; Security Containment With the Security Containment product version B.11.23.01 or later, HP DLPI will allow network related administrative tasks such as resetting the statistics on the interface only for more details. Format The message consists of an... not limited to ) errors listed in the dl_unix_errno element of the dl_error_ack_t structure. DLPI Primitives Local Management Primitives DL_SYSERR A system error has occurred, because the driver returned an error.
HP DLPI Programmer's Guide
Page 91
If the request fails, DL_ERROR_ACK is issued from an invalid state. Reason for Failure DL_OUTSTATE The primitive is returned. The driver error is unchanged. The possible errors can be set to (not limited to ) ENOBUFS and EBUSY. New State The resulting state is present in DL_IDLE ... properly. DLPI Primitives Local Management Primitives The message is valid in the dl_unix_errno element of the dl_error_ack_t structure. DL_SYSERR A system error has occurred, because the driver returned an error.
If the request fails, DL_ERROR_ACK is issued from an invalid state. Reason for Failure DL_OUTSTATE The primitive is returned. The driver error is unchanged. The possible errors can be set to (not limited to ) ENOBUFS and EBUSY. New State The resulting state is present in DL_IDLE ... properly. DLPI Primitives Local Management Primitives The message is valid in the dl_unix_errno element of the dl_error_ack_t structure. DL_SYSERR A system error has occurred, because the driver returned an error.
HP DLPI Programmer's Guide
Page 118
... and the SEND_ACK timer is sometimes known as the N2 variable. Parameters dl_primitive DL_HP_SET_ACK_TO_REQ dl_ack_to new value of the ACK timeout in the interface device driver or interface card. dl_ack_thresh maximum number of I PDUs or for an acknowledgment of any state in response to a DL_HP_INFO_REQ. dl_remote_busy_cnt number of times that the...
... and the SEND_ACK timer is sometimes known as the N2 variable. Parameters dl_primitive DL_HP_SET_ACK_TO_REQ dl_ack_to new value of the ACK timeout in the interface device driver or interface card. dl_ack_thresh maximum number of I PDUs or for an acknowledgment of any state in response to a DL_HP_INFO_REQ. dl_remote_busy_cnt number of times that the...