linkup-delay-timer

Syntax

linkup-delay-timer <DELAY-TIMER>
no linkup-delay-timer

Description

Configures the VSX link-up delay timer. VSX delay timer feature lets you configure the delay timer, which delays bringing downstream VSX links up, following a VSX device reboot or an ISL flap. The linkup delay timer might need to be set to a higher value for larger networks, depending on the ARP and routing table size.

The no form of this command restores the VSX link-up delay timer to a default of 180 seconds.

Command context

config-vsx

Parameters

<DELAY-TIMER>

Specifies the VSX LAG bring-up delay in seconds. Range: 0 to 600 seconds

Authority

Administrators

Usage

Recommended delay timer settings for 8320 series switches
MAC ARPV4 Routes Recommended delay timer setting

16K

16K

10K

120

32K

32K

10K

120

47K

47K

10K

150

47K

47K

10K

250

47K

47K

10K

250

47K

69K

10K OSPF

420

Recommended delay timer settings for 8400 series switches
MAC ARPV4 Routes Recommended delay timer setting

40K

40K

512

300

32K

32K

512

180

48K

48K

512

480

48K

48K

20K IPv4 + 20K IPV6

600

48K

48K

10K IPv4 + 10K IPv6

480

32K

-

10K IPv4

180

Examples

Setting the VSX link-up delay timer to 35 seconds:

switch(config)# vsx
switch(config-vsx)# linkup-delay-timer 35

Setting the VSX link-up delay timer to the default:

switch(config)# vsx
switch(config-vsx)# no linkup-delay-timer