Cisco 11503 Administration Guide - Page 255

Chapter 6 Configuring Remote Monitoring (RMON) Viewing RMON Information Table 6-4 Field Descriptions for the show rmon Command (continued) Field Description Undersize Packets The total number of received packets that were less than 64 octets long (excluding framing bits, but including FCS octets) and were otherwise well-formed. Fragments The total number of received packets that were less than 64 octets in length (excluding framing bits but including FCS octets) and had an FCS Error, a bad Frame Check Sequence (FCS) with an integral number of octets, or an Alignment Error, a bad FCS with a non-integral number of octets. It is normal for fragment statistics to increment because the CSS counts both runts (which are normal occurrences due to collisions) and noise hits. Drop Events The total number of events in which packets were dropped by the probe due to lack of resources. This number is not necessarily the number of packets dropped; it is the number of times this condition has been detected. Slobbers An internal counter. This field is always zero. Jabbers The total number of packets received that were longer than 1518 octets (excluding framing bits, but including FCS octets), and had an FCS Error, a bad Frame Check Sequence (FCS) with an integral number of octets, or Alignment Error, a bad FCS with a non-integral number of octets. This definition of jabber is different than the definition in IEEE-802.3, section 8.2.1.5, 10BASE5, and section 10.3.1.4, 10BASE2. These documents define jabber as the condition where any packet exceeds 20 ms. The allowed range to detect jabber is between 20 and 150 ms. OL-5647-02 Cisco Content Services Switch Administration Guide 6-29