Cisco Nexus 3548 User Manual

375
Cisco Nexus 3548 Switch NX-OS Unicast Routing Command Reference
OL-27852-01
Chapter Unicast Routing Commands
timers basic
timers basic
To adjust the Routing Information Protocol (RIP) network timers, use the timers basic command. To
restore the default timers, use the no form of this command.
timers basic update invalid holddown flush
no timers basic
Syntax Description
Command Default update: 30 seconds
invalid: 180 seconds
holddown: 180 seconds
flush: 240 seconds
Command Modes Router address-family configuration mode
Command History
Usage Guidelines You can modify the basic timing parameters for RIP. These timers must be the same for all routers and
servers in the network.
update Rate (in seconds) at which updates are sent. The range is from 5 to 4,294,967,295.
The default is 30 seconds.
invalid Interval of time (in seconds) after which a route is declared invalid; it should be at
least three times the value of the update argument. A route becomes invalid when no
updates refresh the route. The route then enters into a holddown state where it is
marked as inaccessible and advertised as unreachable. However, the route is still
used to forward packets. The range is from 1 to 4,294,967,295. The default is 180
seconds.
holddown Interval (in seconds) during which routing information regarding better paths is
suppressed; it should be at least three times the value of the update argument. A route
enters into a holddown state when an update packet is received that indicates that the
route is unreachable. The route is marked as inaccessible and advertised as
unreachable. However, the route is still used to forward packets. When holddown
expires, routes advertised by other sources are accepted and the route is no longer
inaccessible. The range is from 0 to 4,294,967,295. The default is 180 seconds.
flush Amount of time (in seconds) that must pass before the route is removed from the
routing table; the interval specified should be greater than the sum of the invalid
argument plus the holddown argument. If it is less than this sum, the proper
holddown interval cannot elapse, which results in a new route being accepted before
the holddown interval expires. The range is from 1 to 4,294,967,295. The default is
240 seconds.
Release Modification
5.0(3)A1(1) This command was introduced.

Cisco Nexus 3548 Specifications

General

Rack Units	1RU
Product Type	Switch
Form Factor	Rack-mountable
Jumbo Frame Support	9216 bytes
Input Voltage	100-240 VAC
Product Series	Nexus 3000
Model	Nexus 3548
Operating System	Cisco NX-OS
Ports	48 x 10GE SFP+
Latency	190 ns
Airflow	Front-to-back