Article ID: 12781
Products
G-Series; firmware 6.03.00.0022 through 6.03.05.0004
D-Series; firmware 6.03.01.0008 through 6.03.05.0004
C3-Series, firmware 6.03.00.0022 through 6.03.05.0004
B3-Series; firmware 6.03.00.0022 through 6.03.05.0004
Changes
Statically configured an Address Resolution Protocol (ARP) IP Address-to-MAC Address binding in switch mode ('set arp...').
Then attempted to delete the resulting ARP entry ('clear arp...').
Symptoms
Clearing a switch mode Static ARP entry does not fully delete it.
The ARP entry is deleted from running memory (DRAM) but not from the configuration stored in non-volatile flash memory.
The ARP entry no longer appears in the output of a 'show arp' but continues to appear in the output of a 'show config'.
Attempting to again delete the ARP entry yields a "Failure: Unable to delete ARP entry." error, because the binding no longer exists in DRAM.
For example:
C3(su)->set arp 10.20.0.223 00-11-22-33-44-55
C3(su)->show arp
LINK LEVEL ARP TABLE
IP Address Phys Address Flags Interface
---------------------------------------------------------
10.20.0.90 00-1a-a0-a7-e7-a8 host
10.20.0.223 00-11-22-33-44-55 S host
---------------------------------------------------------
C3(su)->show config arp
This command shows non-default configurations only.
Use 'show config all' to show both default and non-default configurations.
begin
!
#***** NON-DEFAULT CONFIGURATION *****
!
!
# Firmware Revision: 06.03.00.0022
!
!
#arp
set arp 10.20.0.223 00-11-22-33-44-55
!
end
C3(su)->clear arp 10.20.0.223
arp: 10.20.0.223 deleted.
C3(su)->show arp
LINK LEVEL ARP TABLE
IP Address Phys Address Flags Interface
---------------------------------------------------------
10.20.0.90 00-1a-a0-a7-e7-a8 host
---------------------------------------------------------
C3(su)->show config arp
This command shows non-default configurations only.
Use 'show config all' to show both default and non-default configurations.
begin
!
#***** NON-DEFAULT CONFIGURATION *****
!
!
# Firmware Revision: 06.03.00.0022
!
!
#arp
set arp 10.20.0.223 00-11-22-33-44-55
!
end
C3(su)->clear arp 172.26.2.222
Failure: Unable to delete ARP entry.
C3(su)->
Solution
Upgrade to firmware 6.03.06.0008 or higher.
Release notes state, in the 'Firmware Changes and Enhancements' section:
code:Resolved an issue whereby static ARP entries were displayed in the configuration file after being administratively removed.
