Cisco Cisco IOS Software Release 12.3(4)T
SSG Autologoff Enhancement
ssg auto-logoff arp
8
Cisco IOS Releases 12.2(15)B and 12.3(4)T
ssg auto-logoff arp
To configure Service Selection Gateway (SSG) to automatically log off hosts that have lost connectivity
with SSG and to use the Address Resolution Protocol (ARP) ping mechanism to detect connectivity, use
the ssg auto-logoff arp command in global configuration mode. To disable SSG Autologoff, use the no
form of this command.
with SSG and to use the Address Resolution Protocol (ARP) ping mechanism to detect connectivity, use
the ssg auto-logoff arp command in global configuration mode. To disable SSG Autologoff, use the no
form of this command.
ssg auto-logoff arp [match-mac-address] [interval seconds]
no ssg auto-logoff arp
Syntax Description
Defaults
SSG autologoff is not enabled by default.
The default ARP ping interval is 30 seconds.
The default ARP ping interval is 30 seconds.
Command Modes
Global configuration
Command History
Usage Guidelines
Use the ssg auto-logoff arp command to configure SSG to use the ARP ping mechanism to detect
connectivity to hosts. Use the optional match-mac-address keyword to configure SSG to check the
MAC address of a host each time that host performs an ARP ping. If the SSG finds that the MAC address
of the host has changed, SSG automatically initiates the logoff of that host.
connectivity to hosts. Use the optional match-mac-address keyword to configure SSG to check the
MAC address of a host each time that host performs an ARP ping. If the SSG finds that the MAC address
of the host has changed, SSG automatically initiates the logoff of that host.
Note
ARP ping should be used only in deployments in which all hosts are directly connected to SSG through
a broadcast interface (such as an Ethernet interface) or a bridged interface (such as a routed bridge
encapsulation (RBE) or an integrated routing and bridging (IRB) interface).
a broadcast interface (such as an Ethernet interface) or a bridged interface (such as a routed bridge
encapsulation (RBE) or an integrated routing and bridging (IRB) interface).
ARP request packets are smaller than Internet Control Message Protocol (ICMP) ping packets, so it is
recommended that you configure SSG autologoff to use ARP ping in cases in which hosts are directly
connected.
recommended that you configure SSG autologoff to use ARP ping in cases in which hosts are directly
connected.
match-mac-address
(Optional) Configures SSG to check the MAC address of a host each time
that host performs an ARP ping.
that host performs an ARP ping.
interval seconds
(Optional) ARP ping interval, in seconds. The interval specified is
rounded to the nearest multiple of 30. An interval of less than 30 is
rounded up to 30 seconds. The default interval is 30 seconds.
rounded to the nearest multiple of 30. An interval of less than 30 is
rounded up to 30 seconds. The default interval is 30 seconds.
Release
Modification
12.2(4)B
This command was introduced.
12.2(13)T
This command was integrated into Cisco IOS Release 12.2(13)T.
12.2(15)B
The match-mac-address keyword was added.
12.3(4)T
The match-mac-address keyword was integrated into Cisco IOS
Release 12.3(4)T.
Release 12.3(4)T.