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[SRX] Errors incrementing on em0 interface of Chassis Cluster



Article ID: KB23084 KB Last Updated: 18 Jul 2012Version: 1.0

The em0 interface shows the input errors incrementing over the day. The goal of this article is to outline some of the reasons and possible ways to reduce/stop the errors.


Sometimes, it is observed that the error count increases for em0/fxp1 (control-link) interface. This happens when the control plane CPU is high. When these errors are seen, there is a high probability that the RE CPU is high.

Physical interface: em0, Enabled, Physical link is Up
Interface index: 8, SNMP ifIndex: 17, Generation: 3 Type: Ethernet, Link-level type: Ethernet, MTU: 1514, Clocking: Unspecified, Speed: 1000mbps
Device flags : Present Running
Interface flags: SNMP-Traps
Link type : Full-Duplex
Physical info : Unspecified
Hold-times : Up 0 ms, Down 0 ms
Current address: 02:00:00:02:00:04, Hardware address: 02:00:00:02:00:04
Alternate link address: Unspecified
Last flapped : Never
Statistics last cleared: Never
Traffic statistics:
Input bytes : 1697097590654
Output bytes : 111660495827
Input packets: 2140172829
Output packets: 1314424430
IPv6 transit statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Input errors:
Errors: 18, Drops: 0, Framing errors: 0, Runts: 0, Giants: 0, Policed discards: 0, Resource errors: 0

The next step is to bring down the CPU utilization. The following can be helpful to achieve this task:

  1. Avoid unnecessary logging
  2. Remove "count" option on the security policies
  3. Deactivate all traceoptions and only activate when required for troubleshooting.
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