| Using the BayStack 5510 Switch |
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The RMON tab displays Ethernet statistics for graphing a port or ports.
To open the RMON tab for graphing:
| To select multiple ports, [Ctrl] + left-click the ports that you want to configure. A yellow outline appears around the selected ports. |
| The Port dialog box for a single port or for multiple ports opens with the Interface tab displayed. |
| The RMON tab for graphing multiple ports opens. (Although the dialog box looks a bit different for multiple ports, the same statistics display.) |
The RMON tab displays Ethernet statistics.
The following table describes the RMON tab fields.
Octets
The total number of octets of data (including those in bad packets) received on the network (excluding framing bits but including FCS octets). You can use this object as a reasonable estimate of Ethernet utilization. For greater precision, sample the etherStatsPkts and etherStatsOctets objects before and after a common interval.
Pkts
The total number of packets (including bad packets, broadcast packets, and multicast packets) received.
BroadcastPkts
The total number of good packets received that were directed to the broadcast address. Note that this does not include multicast packets.
MulticastPkts
The total number of good packets received that were directed to a multicast address. Note that this number does not include packets directed to the broadcast address.
CRCAlignErrors
The total number of packets received that had a length (excluding framing bits, but including FCS octets) of between 64 and 1518 octets, inclusive, but had either a bad Frame Check Sequence (FCS) with an integral number of octets (FCS Error) or a bad FCS with a nonintegral number of octets (Alignment Error).
UndersizePkts
The total number of packets received that were less than 64 octets long (excluding framing bits but including FCS octets) and were otherwise well formed.
OversizePkts
The total number of packets received that were longer than 1518 octets (excluding framing bits but including FCS octets) and were otherwise well formed.
Fragments
The total number of packets received that were less than 64 octets in length (excluding framing bits but including FCS octets) and had either a bad Frame Check Sequence (FCS) with an integral number of octets (FCS Error) or a bad FCS with a nonintegral number of octets (Alignment Error). It is entirely normal for etherStatsFragments to increment because it counts both runts (which are normal occurrences due to collisions) and noise hits.
Collisions
The best estimate of the total number of collisions on this Ethernet segment.
Jabbers
The total number of packets received that were longer than 1518 octets (excluding framing bits, but including FCS octets), and had either a bad Frame Check Sequence (FCS) with an integral number of octets (FCS Error) or a bad FCS with a non-integral number of octets (Alignment Error). Jabber is defined as the condition where any packet exceeds 20 ms. The allowed range to detect jabber is between 20 ms and 150 ms.
1..64
The total number of packets (including bad packets) received that were between 1 and 64 octets in length (excluding framing bits but including FCS octets).
65..127
The total number of packets (including bad packets) received that were between 65 and 127 octets in length (excluding framing bits but including FCS octets).
128..255
The total number of packets (including bad packets) received that were between 128 and 255 octets in length (excluding framing bits but including FCS octets).
256..511
The total number of packets (including bad packets) received that were between 256 and 511 octets in length (excluding framing bits but including FCS octets).
511..1023
The total number of packets (including bad packets) received that were between 511 and 1023 octets in length (excluding framing bits but including FCS octets).
1024..1518
The total number of packets (including bad packets) received that were between 1024 and 1518 octets in length (excluding framing bits but including FCS octets).
Poll Interval
Statistics are updated based on the poll interval.
Default: 10s
Range: None, 2s, 5s, 10s, 30s, 1m, 5m, 30m 1h
See also
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