Administrator Guide

To view all interfaces to see with an IP address assigned, use the show ip interfaces brief command in EXEC mode as shown in
View Basic Interface Information.
To view IP information on an interface in Layer 3 mode, use the show ip interface command in EXEC Privilege mode.
DellEMC>show ip interface vlan 58
Vlan 58 is up, line protocol is up
Internet address is 1.1.49.1/24
Broadcast address is 1.1.49.255
Address determined by config file
MTU is 1554 bytes
Inbound access list is not set
Proxy ARP is enabled
Split Horizon is enabled
Poison Reverse is disabled
ICMP redirects are not sent
ICMP unreachables are not sent
IP unicast RPF check is not supported
Automatic recovery of an Err-disabled interface
The Dell EMC Networking OS attempts to recover the interface from the Err-disabled state automatically based on the cause of the error.
You can configure the Dell EMC Networking OS to recover an interface from Err-disabled state automatically, if the interface is changed
to Err-disabled state due to the following:
• BPDU Guard
• FEFD
• MAC learning limit
• ARP inspection
Based on the automatic recovery configuration, when the interface is changed to Err-disabled state, the Dell EMC Networking OS invokes
a timer for the configured time-out interval. Upon expiration of the timer, the interface is moved to operationally up state if the
encountered error is fixed. If not, the interface is again moved to Err-disabled state again.
Dell EMC Networking OS generates syslog message for Err-disabled recovery when:
• The timer is started for recovery of an interface
• The recovery action is complete
Following is the sample syslog displayed when the timer for Err-disable recovery is started:
May 8 17:18:57 %STKUNIT1-M:CP %IFMGR-5-ERR_DIS_RECOVERY_TIMER_START: 180 seconds timer
started to attempt recovery of interface Gi 2/18 from error disabled state caused by bpdu-
guard.
Following is the sample syslog displayed when the recovery action is complete:
May 8 17:21:57 %STKUNIT1-M:CP %IFMGR-5-ERR_DIS_RECOVERY_COMPLETE: Error Disable Recovery
timer expired for interface Gi 2/18.
Configuring an automatic recovery for an Err-disabled
interface
To configure automatic Err-disabled recovery of an interface and time-out interval, use the following commands.
1. Configure automatic recovery of an interface from Err-disabled state based on the cause.
CONFIGURATION mode
errdisable recovery cause {bpduguard | fefd | maclearnlimit | arp-insection}
NOTE:
This command has to be configured before the interface moves to Err-disabled state. If not, the recovery
action is not performed.
2. Configure the recovery time-out interval. You can enter the interval from the range of 30 to 86,400 seconds. The default is 300
seconds.
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Interfaces