keepalives
Syntax
keepalives <interval seconds> <down-count number> <up-count number>;
Hierarchy Level
[edit interfaces interface-name], [edit interfaces interface-name unit logical-unit-number], [edit logical-systems logical-system-name interfaces interface-name unit logical-unit-number]
Description
Enable the sending of keepalives on a physical interface configured with PPP, Frame Relay, or Cisco HDLC encapsulation.
For ATM2 IQ interfaces only, you can enable keepalives on a logical interface unit if the logical interface is configured with one of the following PPP over ATM encapsulation types:
atm-ppp-llc—PPP over AAL5 LLC encapsulation.atm-ppp-vc-mux—PPP over AAL5 multiplex encapsulation.
Default
Sending of keepalives is enabled by default. The default keepalive interval is 10 seconds for PPP, Frame Relay, or Cisco HDLC. The default down-count is 3 and the default up-count is 1 for PPP or Cisco HDLC.
Options
down-count number—The number of keepalive packets a destination must fail to
receive before the network takes down a link.
Range: 1 through 255
Default: 3
interval seconds—The time
in seconds between successive keepalive requests.
Range: 1 through 32767 seconds
Default: 10 seconds
up-count number—The number
of keepalive packets a destination must receive to change a link’s
status from down to up.
Range: 1 through 255
Default: 1
Required Privilege Level
interface—To view this statement in the configuration.
interface-control—To add this statement to the configuration.
Release Information
Statement introduced before Junos OS Release 7.4.