HSRP with RPVST
Hi
At present we are using PVST and HSRP in our network
Core 1 is configured as Root bridge primary for all Vlans and core 2 is configured as root secondary.
and my HSRP configuration is like this
interface Vlan171
ip address 10.71.5.2 255.255.255.0
ip helper-address 10.71.10.102
ip route-cache flow
standby 171 ip 10.71.5.1
standby 171 priority 120
standby 171 preempt
standby 171 name Vlan171
i would like to Use Rapid PVST for fast convergence
what all are things will effect with this and what is the configuration i have to do to enable RPVST
thanks in advance
Drawing1.jpg
At present we are using PVST and HSRP in our network
Core 1 is configured as Root bridge primary for all Vlans and core 2 is configured as root secondary.
and my HSRP configuration is like this
interface Vlan171
ip address 10.71.5.2 255.255.255.0
ip helper-address 10.71.10.102
ip route-cache flow
standby 171 ip 10.71.5.1
standby 171 priority 120
standby 171 preempt
standby 171 name Vlan171
i would like to Use Rapid PVST for fast convergence
what all are things will effect with this and what is the configuration i have to do to enable RPVST
thanks in advance
Drawing1.jpg
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ASKER
Hi
TanQ for your reply
we have couple of 2950 switches some or directly connected to Distribution switches and some are connected to core is this same procedure i have to fallow for those switches also.
Durga
TanQ for your reply
we have couple of 2950 switches some or directly connected to Distribution switches and some are connected to core is this same procedure i have to fallow for those switches also.
Durga
start from the bottom and work to the top.
ASKER
Hi
TanQ for your reply
today we tested this with test setup with two 3750's are as core and one 2950 as access
we configured RPVST as per above commands.
When we switch off core 1 its taking 10 sec to converge is it possible to reduce this....???
TanQ for your reply
today we tested this with test setup with two 3750's are as core and one 2950 as access
we configured RPVST as per above commands.
When we switch off core 1 its taking 10 sec to converge is it possible to reduce this....???
>When we switch off core 1 its taking 10 sec to converge is it possible to reduce this....???
something is not configured correctly if it is taking 10 seconds.
Your test setup, do you have a network diagram and configs
Billy
something is not configured correctly if it is taking 10 seconds.
Your test setup, do you have a network diagram and configs
Billy
ASKER
ASKER
Hi Billy
Please find attached configs
Please find attached configs
can you please describe what it is that you are doing and how you are noticing the 10 second downtime; I suspect that what you are seeing is Layer 3 causing your 10 second outage (HSRP failover) when you switch off core 1.
Billy
Billy
ASKER
Hi Billy,
we kept continues ping from one vlan server to another vlan server and switch off core 1
and we measured time between stopped ping and start ping.
we kept continues ping from one vlan server to another vlan server and switch off core 1
and we measured time between stopped ping and start ping.
yeah, so your issue is related to HSRP failover, you can try and adjust HSRP timers, but HSRP is old school and will more than likely be better off with VRRP or better yet, GLBP.
Billy
Billy
ASKER
Hi Billy,
I just configured GLBP and tested the same its also taking 10 sec.
are there any setting required to reduce this time.
Thanks
Durga
I just configured GLBP and tested the same its also taking 10 sec.
are there any setting required to reduce this time.
Thanks
Durga
please read:
http://www.cisco.com/en/US/docs/ios/12_2t/12_2t15/feature/guide/ft_glbp.html#wp1044247
Most protocols have default timers, and the defaults are useless in my opinion:
try adjusting the timers (Please change to the interface you are using)
interface gigabitethernet0/0
glbp 10 timers 2 5
Billy
http://www.cisco.com/en/US/docs/ios/12_2t/12_2t15/feature/guide/ft_glbp.html#wp1044247
Most protocols have default timers, and the defaults are useless in my opinion:
try adjusting the timers (Please change to the interface you are using)
interface gigabitethernet0/0
glbp 10 timers 2 5
Billy
http://www.cisco.com/en/US/products/hw/switches/ps708/products_configuration_example09186a00807b0670.shtml
Your HSRP-configuration is irrellevant and will be untouched since stp is purely l2.
Good luck!
/Kvistofta