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| Chapter 24 IP Source Guard | |
| Table 79 ARP Inspection Configure (continued) | ||
| LABEL | DESCRIPTION |
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| Log buffer size | Enter the maximum number |
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| generated by ARP packets and have not been sent to the syslog |
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| server yet. Make sure this number is appropriate for the specified |
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| Syslog rate and Log interval. |
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| If the number of log messages in the Switch exceeds this |
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| number, the Switch stops recording log messages and simply |
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| starts counting the number of entries that were dropped due to |
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| unavailable buffer. Click Clearing log status table in the ARP |
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| Inspection Log Status screen to clear the log and reset this |
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| counter. See Section 24.6.2 on page 224. |
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| Syslog rate | Type the maximum number of syslog messages generated by |
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| ARP packets the Switch can send to the syslog server in one |
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| batch. This number is expressed as a rate because the batch |
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| frequency is determined by the Log Interval. You must |
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| configure the syslog server (Chapter 34 on page 301) to use this |
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| setting. Enter “0” if you do not want the Switch to send log |
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| messages generated by ARP packets to the syslog server. |
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| The Syslog rate and Log interval settings interact. If the |
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| Syslog rate number X is greater than Log interval seconds Y, X |
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| divided by Y system messages are sent every second. Otherwise, |
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| one message is sent every Y divided by X seconds. For example: |
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| • If the Syslog rate is 5 and the Log interval value is 2, two |
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| messages are sent every second. |
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| • If the Syslog rate is 3 and the Log interval value is 6, one |
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| message is sent every two seconds. |
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| Log interval | Type how often |
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| syslog messages to the syslog server. Enter 0 if you want the |
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| Switch to send syslog messages immediately. See Syslog rate |
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| for information on the relationship between Syslog rate and Log |
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| interval. |
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| Apply | Click Apply to save your changes to the Switch’s |
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| memory. The Switch loses these changes if it is turned off or |
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| loses power, so use the Save link on the top navigation panel to |
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| save your changes to the |
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| done configuring. |
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| Cancel | Click this to reset the values in this screen to their |
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| values. |
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24.7.1 ARP Inspection Port Configure
Use this screen to specify whether ports are trusted or untrusted ports for ARP inspection. You can also specify the maximum rate at which the Switch receives
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