Cpu Protection Setup - ZyXEL Communications GS1920v2 Series User Manual

Table 213 SECURITY > Errdisable > Errdisable Status (continued)
LABEL
Mode
Rate
Status
Recovery
Time Left
(secs)
Total
Dropped

61.3 CPU Protection Setup

Use this screen to limit the maximum number of control packets (ARP, BPDU and/or IGMP) that the
Switch can receive or transmit on a port. Click SECURITY > Errdisable > CPU Protection to display the
screen as shown.
Note: After you configure this screen, make sure you also enable error detection for the
specific control packets in the SECURITY > Errdisable > Errdisable Detect screen.
Figure 276 SECURITY > Errdisable > CPU Protection
Chapter 61 Error-Disable
DESCRIPTION
This field shows the action that the Switch takes for the cause.
• inactive-port – The Switch disables the port.
• inactive-reason – The Switch drops all the specified control packets (such as BPDU) on the
port.
• rate-limitation – The Switch drops the additional control packets the ports has to handle in
every one second.
This field displays how many control packets this port can receive or transmit per second. It can
be adjusted in CPU Protection. 0 means no rate limit.
This field displays the errdisable status.
• Forwarding: The Switch is forwarding packets. Rate-limitation mode is always in Forwarding
status.
• Err-disable: The Switch disables the port on which the control packets are received
(inactive-port) or drops specified control packets on the port (inactive-reason).
This field displays the time (seconds) left before the ports becomes active of Errdisable
Recovery.
This field displays the total packet number dropped by this port where the packet rate exceeds
the rate of mode rate-limitation.
GS1920v2 Series User's Guide
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