Extreme Networks ExtremeWare Command Reference Manual page 1284

Troubleshooting Commands
Table 22: ExtremeWare Task Descriptions (Continued)
Task Description
tExcTask If the operating system recognizes an exception condition, it will invoke the exception handling
task (tExcTask).
tFastTimer The fast timer task (tFastTimer) is used to maintain a queue of timer events triggering periodic
or single event functions. These events have a small delay in time between re-occurrences.
The tFastTimer has a higher priority than the slow timer task (tSlowTimer). Therefore,
tFastTimer events are processed prior to iSlowTimer events occurring at the same time.
tfdbAgeTask The forwarding database aging task (tfdbAgeTask) performs the aging of MAC FDB entries in
the hardware and software tables.
tIpxTask The IPX input task (tIpxTask) handles inbound IPX control packets such as RIP, SAP, and
Xping.
NOTE: This option is available only on the "i" series switches.
tIpxTx The IPX transmit task (tIpxTx) handles the IPX transmission of control packets such as RIP and
SAP.
NOTE: This option is available only on the "i" series switches.
tIquery The iQuery support task for 3DNS (tIquery) processes iQuery requests.
TIRDP The ICMP router discovery protocol task (tIRDP) implements and processes IRDP on the
switch.
tISRtask The interrupt service routine task (tISRtask) manages the interrupt driven port link state
changes.
tLinkEvent The link event task (tLinkEvent) is the interrupt driven link event processing task. It handles
hardware interrupts for link events.
tMACPoll The media access controller poll task (tMACPoll) polls the various MAC PHY chips on the
switch to pull up MAC Layer control messages for the CPU to process.
tmt32LinkPoll F32F module link poll task.
tmuTelnetd The telnet daemon task.
tNetTask The network stack task (tNetTask) handles all the software-based processing of packets
including:
• Packets that cannot be handled by the switch's ASIC because the forwarding tables do not
have entries built in.
• Packets destined to the CPU for one of the router interfaces.
• Packets that must be examined or snooped by the CPUPackets detected for copying to the
CPU.
tNMCEvent The network management controller event task (tNMCEvent) manages event signaling
hardware and state machine on a BlackDiamond switch's redundant MSM CPU modules.
tOpenPort A server load balancing (SLB) Layer 4/Layer 7 health check sub-task.
NOTE: This option is available only on the "i" series switches.
tospfMsgTask The OSPF message processing task (tospfMsgTask) implements and manages the processing
of OSPF messages.
tospfSpfTask The OSPF shortest path forward task (tospfSpfTask) executes the SPF algorithm run
processing for OSPF.
tospfTimer The OSPF timer task (tospfTimer) manages the internal timer trigger functions and delays for
OSPF.
tPCSPoll The tPCSPoll task services the Gigabit Ethernet PCS poll messages.
tPhyPoll The PHY layer poll task (tPhyPoll) polls the Road Runner PHY layer every 2 seconds to verify
the proper operation.
1284 ExtremeWare 7.7 Command Reference Guide