A3COM-SWITCHING-SYSTEMS-POLL-MIB: View SNMP OID List / Download MIB

This table is used to provide remote device monitoring facilities. The implementation allows a list of network devices to be set up and polled regularly (or only once) by a variety of protocols. The table can be configured to inform the management station(s) of devices that are not responding to polls or that have started to respond after a period of silence. The minimum effort required to do a single poll is 1. In one packet, write the address and set a3ComPollAction to activate(2). 2. In the next packet, read the a3ComPollReport. The minimum effort required to monitor a device is 1. In one packet, write the address, set a3ComPollAttempts to 1, set a3ComPollCount to 0 and set a3ComPollAction to activate(2). 2. Wait for traps to come in. A row in this table is created by setting any read-write member, indexed by the next available index (a3ComPollNextFreeIndex). This method of creation makes the table very user friendly, although a bit harder to detect racing conditions. The suggested method for racing condition detection is by checking the a3ComPollAddress and a3ComPollOwner objects while the a3ComPollReport object is set to active. An example of the indexing of this table is a3ComPollRate.2

A table used to define device monitoring. A row in this table is created by setting any read-write member, indexed by the next available index (a3ComPollNextFreeIndex). An entry in this table is deleted by setting a3ComPollAction to destroy(5). An example of the indexing of this table is a3ComPollRate.2 This method of creation makes the table very user friendly, although a bit harder to detect racing conditions. The suggested method for racing condition detection is by checking the a3ComPollAddress and a3ComPollOwner objects while the a3ComPollReport object is set to active.

Unique identifier of a row in the Poll Table. The actual number of rows that can be created on any particular device depends on the memory and processing resources available at the time.

This DisplayString is the network address of the device to monitor. Typically this is an IP, dotted IP format, IP's hostname, IPX or AppleTalk. The following formats can be used: IP cccc - ipAddress MIB IP nnn.nnn.nnn.nnn - dotted format IP hostname IPX AABBCCDD:AABBCCDDEEFF - network : node AppleTalk n[...].n[...] - dotted notation The object a3ComPollAddressType is used to indicate how this object will be interpreted. This object may not be modified if the associated a3ComPollReport is equal to busy(2). When this object is successfully set, a3ComPollReport will be set to idle(1).

This defines the method used to interpret the a3ComPollAddress, which implies on the protocol to be used. Writing an address to the a3ComPollAddress object causes a default a3ComPollAddressType value to be setup. The default value is derived from the format of the address - four octets means ip(2), four sets of numeric values separated by dot means ipdotted(3), eight and twelve octets separated by colon means ipx(5), and two sets of numeric values separated by a dot means appletalk(6). If the address type cannot be figured out, and this object is not currently set to ipname(4), it will then be set to unknown(1). In other words, this object will remain unchanged if its current value is ipname(4) and a more specific type cannot be given to it. Thus, for the mot part, when setting this object manually, that needs to be done after setting a3ComPollAddress. For ip hostname(4), this field must be set manually. Furthermore, DNS client must be locally enabled to allow for conversion from name to ip address. If the requested protocol is not supported or is not compatible with the a3ComPollAddress, an error is returned when an attempt is made to set a3ComPollAction to activate(2), and a3ComPollReport will be set to noResource(4). This object may not be modified if the associated a3ComPollReport is equal to busy(2). When this object is successfully set, a3ComPollReport will be set to idle(1). Enumeration: 'unknown': 1, 'appletalk': 6, 'ip': 2, 'ipname': 4, 'ipx': 5, 'ipdotted': 3.

This integer is the number of ping packets to be sent out until completion of a polling command. If count is set to continuous(0), the remote device will be kept monitored and the a3ComPollReport will be normally set to busy(2) upon poll activation. This object may not be modified if the associated a3ComPollReport is equal to busy(2). When this object is successfully set, a3ComPollReport will be set to idle(1).

The number of unsuccessful or successful requests necessary before deciding that the device is definitely not responding or responding. In order to use traps, a value greater than one must be used. Conversely, a value of zero, which is the default, would imply that traps are disabled. This object may not be modified if the associated a3ComPollReport object is equal to busy(2). When this object is successfully set, a3ComPollReport will be set to idle(1).

This defines how often, in seconds, a poll packet is sent to the device being polled. If burst mode(0) is chosen, then number of packets selected will be sent out as fast as possible when the a3ComPollAction is set to activate(2). Common values the a3ComPollRate can be set to: every 3 seconds (3) default every minute (60) every 5 minutes (300) every 15 minutes (900) every 30 minutes (1800) every hour (3600) This object may not be modified if the associated a3ComPollReport is equal to busy(2). When this object is successfully set, a3ComPollReport will be set to idle(1).

Maximum wait time, in msecs, for a response packet before deciding that no response arrived. This object differs from a3ComPollRate as the device have the sending and receiving queues independent, making it possible to send ping requests at rates faster than receiving. The value of 0 (default) will be interpreted as a request for time-out by the time a new packet is sent, and 65535 as a request for maximum wait. Assuming that burst is used and this object is set to one, most likely all packets sent will be interpreted as timed out. This object may not be modified if the associated a3ComPollReport is equal to busy(2). When this object is successfully set, a3ComPollReport will be set to idle(1).

Size, in bytes, of ping packet to be sent out. If set to 0, the default size for ping packet under the protocol chosen will be used. If value given is to too large or too small, the biggest or smallest possible packets will be used, respectively, and no errors will be issued. This object may not be modified if the associated a3ComPollReport is equal to busy(2). When this object is successfully set, a3ComPollReport will be set to idle(1).

This DisplayString is the network address of the local interface to receive ping query. Typically this is an IP, IPX or AppleTalk. The following formats can be used. IP cccc - ipAddress MIB IP nnn.nnn.nnn.nnn - dotted format IPX AABBCCDD:AABBCCDDEEFF - network : node AppleTalk n[...].n[...] - dotted notation If a3ComPollSourceAddress is set to empty, which is the default value, the sending device will pick the best interface to receive the response for its queries. The object a3ComPollAddressType is used to indicate how this object will be interpreted, as well as a3ComPollAddress. An exception exists when a3ComPollAddressType is set to ipname(4): this object will be parsed as if a3ComPollAddressType was set to ip(2) or as ipdotted(3), depending on the length of the object value. Therefore, ip name is not supported for a3ComPollSourceAddress. This object may not be modified if the associated a3ComPollReport is equal to busy(2). When this object is successfully set, a3ComPollReport will be set to idle(1).

The minimum amount of time taken, in msecs, for the round trip of a ping packet.

The average amount of time taken, in msecs, for the round trip of a ping packet.

The maximum amount of time taken, in msecs, for the round trip of a ping packet.

The number of ping packets sent to remote device so far.

The number of ping packets responded by remote device so far. If a3ComPollResponseTimeOut is a non-zero value, and the poll response arrives after the specified timeout, this object will not increment.

Depending on the protocol being used, this object contains extra information obtained through the device poll. For IP, the value is the number of packets that arrived out of sequence. If Apple Talk is used, this value represents the number of hops. An empty string, which is the default, stands for no extra information available. This object will reset every time a change is observed on a3ComPollAddressType.

The RMON OwnerString conventions are used here to help control the multi-manager situations.

This integer contains the current status of the poll entry. When the state changes from busy to any other, the entry is no longer active. In situations where the a3ComPollCount field is set to continuous(0), this object will normally be set to busy(2) upon successful activation. Enumeration: 'hostAlive': 6, 'busy': 2, 'nameLookupFailed': 5, 'hostUnreachable': 7, 'idle': 1, 'noResource': 4, 'badArgument': 3, 'hostNotResponding': 8.

This object is the trigger for initiating, stopping, resetting and destroying a poll entry. In order to read the current status of an entry, a3ComPollReport is the object to be queried. If reset(4) action is requested, the poll entry will unconditionally be moved to the idle(1) state and all objects, except for the pollAddress and pollAddressType will be set to initial values. Another object that is not affected by reset(4) is the owner object. Activating an entry that is in the busy(2) state has no effect. Enumeration: 'deactivate': 3, 'reset': 4, 'activate': 2, 'noop': 1, 'destroy': 5.

The index for the next available remote polling entry in the table.

This object provides a summary on the entire poll table. Internal thresholds, such as the maximum number of entries, as well the number of entries that can be active simultaneously are commonly provided here. Another information that can be given is the list of protocols the agent can handle. An empty string for a3ComPollTableInformation stands for no table information available.

This object works exactly as a3ComPollAction, except that it affects every entry in the table, in one snmp transaction. If a3ComPollTableActionAll is called with destroy(5), the table is purged. Enumeration: 'deactivate': 3, 'reset': 4, 'activate': 2, 'noop': 1, 'destroy': 5.

This trap is generated when the PollTable in the managed agent receives replies to a poll after a sequence of unsuccessful polls. The number of packets in such sequence is determined from the a3ComPollAttempts object. The variables are: a3ComPollAddress - the address of the device polled. a3ComPollAddressType - the type of the address above. a3ComPollAttempts - number of replies received in sequence before this trap was triggered. a3ComPollRate - rate at which device is being polled. 0 = burst. a3ComPollFramesSent - total number of frames sent. a3ComPollFramesReceived - total number of frames received. This event is generated at most once per monitored device per operation of a sequence of ping response when the event is first observed.

This trap is generated when the PollTable in the managed agent receives no replies to a poll after a sequence of successful polls. The number of packets in such sequence is determined from the a3ComPollAttempts object. The variables are: a3ComPollAddress - the address of the device polled. a3ComPollAddressType - the type of the address above. a3ComPollAttempts - number of replies missed in sequence before this trap was triggered. a3ComPollRate - rate at which device is being polled. 0 = burst. a3ComPollFramesSent - total number of frames sent. a3ComPollFramesReceived - total number of frames received. This event is generated at most once per monitored device per operation of a sequence of ping fails when the event is first observed.