Re: Net work UP time for 3560 series and 3750 series.
If you have HSRP or VRRP enabled on you switches by default the failover time to redundent switch is 10-15 seconds by default.This is both in case of 3560 and 3750.
The first 10 seconds is the Hold time that HSRP will use to declare the standby router that active is down and another 5 second approx it will take to bring the standby switch as active for HSRP and also bring the interfaces up.
Rest you can change your HSRP timers to alter the default hello and hold time using " standby timers command ".AFA recommendation goes, do not play with the default timers unless you have really a need for it.
Incase you are not using HSRP at layer 3 for redundancy there can also be a possibility of redundancy at layer 2 between 2 3550 or 2 3750 or infact any 2 switches which is STP redundany and in that case the failover time can vary between 20 seconds to 50 seconds depending upon the topology and configuration.
Check this link for STP redyndany where you can configure 1st 3550 with STP root and 2nd 3550 as STP secondary root for failover
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.