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Tok_String

Tok_String

This read-only variable identifies the port defined by the VIfEntry SEQUENCE.

This read-only variable displays the number of known single-destination frames received by this port.

This read-only variable displays the total number of received frames discarded late by this port. This number is included in the Frames received total.

This read-only variable displays the total number of bytes discarded late by this port. This number is included in the Bytes received total.

This read-only variable displays the number of transmit frames discarded due to user-configured (traffic control) filters or internal system filters.

This read-only variable displays the number of transmit frames discarded due to multicast or unknown destination filtering.

This read-only variable displays the number of frames discarded because the system was low on buffers. This results from simultaneously congesting a number of high-volume data links.

This read-only variable displays the total number of transmit bytes discarded by this port.

This read-only variable displays the current transmit state of the LAN port as follows: initializing: A transient state lasting a few milliseconds after startup. on: A second transient state immediately following initializing. pre-forwarding 1: The first half of the pre- forwarding interval. Initial Spanning Tree packets traverse the network and the root is elected. No learning or forwarding takes place. pre-forwarding 2: The second half of the pre- forwarding interval. The bridge listens to packets on the network and learning begins, but no forwarding takes place. forwarding: The normal Spanning Tree operating state. The bridge forwards frames on this link and learns from received frames. dls forwarding: The normal DLS operating state. This link is treated as forwarding for Spanning Tree calculations, but the link is participating in VitalinkUs proprietary Distributed Load Sharing (DLS) algorithm. Certain user traffic can traverse the link. backup: Hot standby state. No bridged user traffic is forwarded. The link transmits and receives only certain network management frames that determine if the port should remain in backup or if it should transition to pre- forwarding. dls backup: This link is treated as backup for Spanning Tree calculations, but the link is participating in VitalinkUs proprietary Distributed Load Sharing algorithm. Certain user traffic can traverse the link. off: Offline. No traffic may pass on this link, and the line is not used for any internal computations. disabled: The Disable switch (screen /2/n/2) was on when the bridge was initialized. Only certain network management frames are transmitted. No user traffic is forwarded and no learning takes place on this link. broken: Communication is not possible over this link. Spanning Tree Protocol computations consider broken links in order to calculate the root priority.

When Transmit state = broken, this read- only variable displays the reason.

This read-only variable displays the current receive state for this port as follows: on: The receive function is in use. off: The receive function is not in use. broken: The receive function has failed and is out of service.

If the Receive state = broken, this read- only variable displays the reason.

Tok_String

Tok_String

This read-only variable specifies group 0 as the group to be defined by the vifEntry SEQUENCE. A group is one or more physical ports treated, logically, as a single link between two Vitalink systems or between a Vitalink system and a LAN. Group 0 on a Vitalink system is always the Vitalink systems LAN port.

This read-only variable describes the total number of frames discarded by the LAN port.

This read-only variable specifies the number of frames discarded by the LAN port PPU because they were recognized as local traffic.

This read-only variable specifies the total number of frames discarded after being received from the LAN port and counted.

This read-only variable describes the number of received frames discarded at the system level because they were recognized as local traffic. These late local discards occur during normal operation because of cache memory overflow at the LAN port.

This read-only variable describes the number of frames that were discarded by the LAN port due to multicast damping See also Maximum multicasts per second, screen /3/0/3.

Tok_String

Tok_String

This read-only variable lists the WAN port number.

This read-only variable describes the number of transmit frames discarded after exceeding the Multicast frame limit.

This read-only variable describes the number of transmit frames discarded after exceeding the Tx queue frame limit.

This read-only variable describes the number of transmit frames discarded after exceeding the Tx queue byte limit.

This read-only variable describes the number of transmit frames discarded due to Single destination damping.

This read-only variable specifies whether or not (init-on-reboot, no-init) this port is to be initialized when the system is rebooted.

This read-only variable specifies whether or not (enabled, disabled) Network Validation protocol is enabled. If multiple leased lines are configured in the same network group, the value must be yes.

Tok_String

Tok_String

This read-only variable identifies the group defined by the VIfEntry SEQUENCE. A group is one or more physical ports treated, logically, as a single link between two Vitalink systems or between a Vitalink system and a LAN.

This variable specifies the name for a network group. This variable may consist of up to 15 characters and may include special characters. (Note: The first character in the name must be an alpha character.)

This read-only variable displays the current status of a WAN group. Status may be active, broken, or inactive. Active means that at least one port in the group is operational. Inactive means that no ports in the group are initialized. Broken means that no ports in the group are operational.

This read-only variable specifies those ports included in a network group. Up to eight ports (1P8, separated by commas) may be included in a single network group.

This read-only variable specifies whether or not (stpenabled, stpdisabled) Spanning Tree Protocol is enabled on this network group. Caution: Do not change the value of this variable except under Vitalink direction. Default = stpenabled.

This read-only variable specifies whether or not (dlsenabled, dlsdisabled) Distributed Load Sharing is enabled for this network group. Default = dlsenabled.

This read-only variable displays which Spanning Tree algorithm (IEEE 802.1, DEC-compatible) this bridge is using. When this system boots up, it uses IEEE 802.1. If it subsequently learns that another system on the network is using DEC compatible spanning tree algorithm, this system will switch to DEC-compatible.

This is a read-only variable. It is normally used when the network is running in DEC compatible mode (see item 1 on screen 1/2). Setting this variable to yes in the root bridge will convert the network to IEEE 802.1 mode, if all bridges in the network can accept it; otherwise the network will remain in DEC compatible mode.

This read-only variable specifies whether or not (true, false) this bridge is to function as an interdomain bridge. An interdomain bridge is used to partition the network into different domains by blocking certain network management messages.

This read-only variable specifies the root priority (or priority code) for this bridge. If this value is set to 0P3, it is interpreted as a priority code that the bridge uses to compute its own priority based on 0 as most likely to become the root, and 3 as least likely. If this value is set to a 4-65535, the configured value is used as the actual root priority for this bridge.

This read-only variable displays the priority and address of this bridge.

This read-only variable specifies which costing algorithm (dec, ieee) is to be used by this bridge.

This read-only variable displays the priority and address of the root bridge. The bridge with the lowest priority becomes the root; if two or more bridges have the same priority, the one with the lowest address will become the root.

This read-only variable displays the cost of the Inlink path to the root.

This read-only variable displays the ID of the network group that creates the most direct, cost-effective path from this bridge to the root bridge.

This read-only variable displays the amount of time a bridge will wait for a hello message before attempting to find a new inlink. This value is determined by the root bridge.

This read-only variable displays the frequency with which hello messages and network validation messages are transmitted over the network. This value is determined by the root bridge.

Displays the amount of time a bridge will wait for a hello message before attempting to find a new inlink. This value is determined by the root bridge.

This read-only variable displays the length of time a network group will remain in the pre- forwarding state. Determined by the root bridge.

This read-write variable specifies the Listen interval to be used throughout the network if this bridge becomes the root. Range = 1P100.

This read-write variable specifies the Hello Interval to be used throughout the network if this bridge becomes the root. Range = 1P10 (sec).

This read-write variable specifies the pre- forwarding interval to be used throughout the network if this bridge becomes the root. Range = 6P200 (seconds).

Displays the number of times this network group has transitioned from the pre-forwarding to the forwarding state.

Tok_String

Tok_String

This read-only variable identifies a group to be defined by the VitaStpGroupEntry SEQUENCE. A group is one or more physical ports that are treated, logically, as a single link between two Vitalink systems or between a Vitalink system and a LAN.

Specifies the root priority (or priority code) for this bridge. If this value is set to 0P3, it is interpreted as a priority code that the bridge uses to compute its own priority based on 0 as most likely to become the root, and 3 as least likely. If this value is set to a 4-65535, the configured value is used as the actual root priority for this bridge.

This read-only variable specifies the Spanning Tree cost of this network group. This value is computed by dividing a speed constant by the network speed of this network group. (The speed constant is 1,000 Mb/s for IEEE-compatible networks and 100 Mb/s for DEC-compatible networks. All bridges in a domain must use the same speed constant. Range = 1P4294967294 or maximum.

Displays the priority and address of the root bridge. The bridge with the lowest priority becomes the root; if two or more bridges have the same priority, the one with the lowest address will become the root.

Specifies the Spanning Tree cost of this network group. This value is computed by dividing a speed constant by the network speed of this network group. The speed constant is 1,000 Mb/s for IEEE-compatible networks and 100 Mb/s for DEC-compatible networks. All bridges in a domain must use the same speed constant. Range = 1P4294967294.

Displays the priority and address of this bridge.

Displays the network Group number to the Designated Bridge.

This read-only variable displays the total number of bad hellos received on this network group. This value also increments when a hello is received while the variable Spanning Tree Enabled is set to false.

Tok_String

Tok_String

This read-only variable displays the WAN port number.

Specifies whether or not (true, false) LAPB is enabled on this port (i.e., indicates whether data messages on this link are to have LAPB encapsulation).

Displays whether this port is configured as DCE (Data Communications Equipment) or DTE (Data Terminal Equipment). When a WAN (serial) port is configured as DCE, it generates transmit and receive clocks at discrete frequencies. Most frequencies below 100 kbps can be generated directly. Above 100 kbps, however, the system will select the frequency closest to one specified in the table on page 3-107 of the Vitalink TransLAN/TransRING Reference Manual (part number 014721). The actual, rather than specified, frequency will be displayed as the Bit rate value. When a T1 link is configured utilizing a Bell 306-compatible modem, the configured bit rate should be 1344000, versus 1544000, as this is the effective bit rate of the link after the framing has been stripped.

The number of Clear to Send (CTS) errors, indicating that CTS was dropped and communication with the modem was lost.

The number of Data Carrier Detect (DCD) errors, indicating that DCD was dropped and communication with the modem was lost.

The number of aborts received. Large numbers of aborts and/or CRC errors indicate a malfunctioning transmission media.

The number of Cyclic Redundancy Check (CRC) errors, indicating that the integrity of the data was compromised.

The number of times that transmission of a frame could not be completed due to being unable to supply characters fast enough. (If this value is incremented often, the transmit clock may be too fast.)

The number of times that frames were discarded because receive buffers could not be allocated.

The number of times that frames were discarded because the bypass transmit queue overflowed.

Tok_String

Tok_String

Displays the port number that supports LAPB.

Specifies whether the LAPB encapsulation is modulo 8 or modulo 128.

Tok_String

Tok_String

Displays the port number supporting DS1 interface.

Specifies the method of zero code suppression to be used as follows: INTRINSIC: Long zero strings are never generated and data bits are inverted, resulting in optimum throughput. Similar to the HDLC mode offered by some DSU vendors. B8ZCS: Relies on bipolar violations. JAMMED BIT: The eighth bit of each channel is set to 1. HDB3: Uses hdb3 zero compression.

Specifies whether this system functions as master (clock source) or slave.

Displays the number of times frame sync was lost in the received data since startup or reset.

Displays the number of incorrect framing bits that have been received since startup or reset.

Displays the number of times the DS1 frame buffer either inserted or omitted a frame because of excessive jitter or wander since startup or reset.

Displays the number of bipolar violations found in received data since startup or reset (does not include bipolar violations used in B8ZCS mode).

Displays the number of superframe CRC errors found in received data since startup or reset (ESF mode only).

Displays the number of errored seconds since startup or reset as follows: In D4 mode, an errored second is one in which any DS1 errors were received. In ESF mode, an errored second is one in which one or more frame alignment errors or superframe CRC errors were received.

Displays the number of severely errored seconds since startup or reset as follows: In D4 mode, a severely errored second is one in which 320 or more bipolar violations were received, or in which data synchronization was not achieved at all. In ESF mode, a severely errored second is one in which 320 or more frame alignment or superframe CRC errors were received, or in which data synchronization was not achieved at all.

Displays the number of failed seconds since startup or reset. If the number of consecutive severely errored seconds reaches 10 or more, a failed second is counted for each severely errored second.

Tok_String

Tok_String

This read-only variable is the port number of the LAN.

This read-only variable specifies the type of transceiver interface (IEEE 802.3, Ethernet 1) to be used with the LAN port.

This read-only variable shows the total number of transmit errors from Port O. The total includes all errors of the following types: buffer errors, underflow errors, late collisions, loss carrier errors, packets too long, retry errors.

This read-only variable displays the total number of receive errors. The total includes all errors of the following types: overflow errors, missed packet errors, and framing errors.

This read-only variable displays the number of instances where the Ethernet controller has been reset due to memory parity errors, controller timeouts, or other faults. The most common reason for a Controller reset error is a collision signal asserted by the transceiver at certain bit intervals.

Tok_String

Tok_String

This read-only variable displays the TX LAN port number.

This read-only variable displays the number of messages whose transmission was deferred once due to a collision with another stations transmission. A few of these are normal in CSMA/CD networks.

This read-only variable displays the number of messages whose transmission was deferred more than once due to collisions with other stations transmissions. A few of these are normal in CSMA/CD networks, but a large number of them indicate a serious degradation in network performance due to traffic congestion.

This read-only variable displays the number of messages transmitted incorrectly due to a lack of buffer availability. This is a Port 0 Error statistic.

This read-only variable displays the number of messages lost in transmission due to an inability to maintain data in the first-in, first-out (FIFO) queue. This is a Port 0 Error statistic.

This read-only variable displays the number of packets presented for transmission which exceed the Ethernets 1518-byte limit. Primarily relevant in bridging heterogeneous IEEE 802 series networks. This is a Port 0 Error statistic.

This read-only variable displays the number of messages lost in transmission due to a collision after the Ethernet slot time elapsed. This is normally the result of an overextended LAN (cable too long or more than two repeaters between stations). This is a Port 0 Error statistic.

This read-only variable displays the number of messages lost in transmission because they had more than 15 transmission attempts aborted due to collisions. These are typically the result of a failure in the cable, which may be too long, poorly terminated, or compromised by a bad tap, moisture, etc. This is a Port 0 Error statistic.

This read-only variable displays the number of messages lost as a result of losing the carrier during transmission. This is normally the result of a failing transceiver. This is a Port 0 Error statistic.

Tok_String

Tok_String

This read-only variable displays the RX LAN port number.

This read-only variable displays the number of messages received incorrectly due to a lack of buffer availability. This is a Port 0 Error statistic.

This read-only variable displays the number of messages received incorrectly due to an internal FIFO queue overflow. This is a Port 0 Error statistic.

This read-only variable displays the number of messages received incorrectly because of an FCS (Frame Checksum) error. This is a Port 0 Error statistic.

This read-only variable displays the number of messages received incorrectly with an FCS (Frame Checksum) error and a non-integer number of octets. This is a Port 0 Error statistic.

This read-only variable displays the number of instances where the Ethernet controller could not receive one or more frames due to the lack of available buffers. This is a Port 0 Error statistic.