zl50411 Zarlink Semiconductor, zl50411 Datasheet - Page 57

• Manufacturer Part Number: zl50411
• Description: Managed 9-port Fast Ethernet Switch With Private Vlan
• Manufacturer: Zarlink Semiconductor

Note: when this counter is incremented, the ZL50411 also increments the “Collision” counter, C[25].
11.2.1.10
Counts number of frames received with size larger than Jabber Lockup Protection Timer (TW3 = 5 ms or 50 000 bit
times – 20% + 50%).
No ZL50411 counter.
Note: the ZL50411 defines a jabber frame as any frame that exceeds 6400 bytes, however, the maximum buffer
size supported by the device is 4 KBytes. Thus, any frame > 4KB would be counted as an Oversized Frame, C[15].
11.2.1.11
For repeaters or HUB application only. No ZL50411 counter.
11.2.1.12
For repeaters or HUB application only. No ZL50411 counter.
11.2.1.13
Sum of the following errors:
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11.3
11.3.1
11.3.1.1
Counts number of frames discarded due to excessive transmit delay through the bridge.
Note: Not applicable for the ZL50411.
11.3.1.2
Counts number of frames discarded due to excessive size.
11.3.1.3
Counts number of frames received by this port or segment.
Note: A frame received by this port is only counted by this counter if and only if it is for a protocol being processed
by the local bridge function.
PortFCSErrors
PortAlignmentErrors
PortFrameTooLong
PortShortEvents
PortLateEvents
PortVeryLongEvents
PortDataRateMisatches
IEEE 802.1 Bridge Management (RFC 1286)
Event Counters
PortDelayExceededDiscards
PortMtuExceededDiscards
PortInFrames
PortDataRateMisatches
PortVeryLongEvents
PortAutoPartitions
PortTotalErrors
Frame size:
Zarlink Semiconductor Inc.
ZL50411
57
Min. Frame Size
> TW3
Max. Frame Size
Data Sheet