10-08-2010 06:18 AM - edited 03-06-2019 01:24 PM
Hi Commnity,
We have two cisco 6500 swtiches. Switch A is a active state of HSRP and Switch B in stanby state, After 2 days we are going have go-live test for Switches failove redudancy.
Please see the sample HSRP confiuration for both switches
SWTICH A
interface Vlan 100
description << RECEPTION>>
ip address 10.1.2.254 255.255.255.0
ip route-cache flow
standby delay minimum 20 reload 25
standby 3 ip 10.1.2.1
standby 3 priority 110
standby 3 preempt delay minimum 380
SWITCH B
interface Vlan3
description << RECEPTION>>
ip address 10.1.2.253 255.255.255.0
ip route-cache flow
standby delay minimum 20 reload 25
standby 3 ip 10.1.2.1
standby 3 priority 95
standby 3 preempt delay minimum 380
SWITCH A# sh stanby brief
Interface Grp Prio P State Active addr Standby addr Group addr
Vl3 3 110 P Active local 10.1.2.253 10.1.2.1
SWITCH B #
Interface Grp Prio P State Active addr Standby addr Group addr
Vl3 3 95 P Standby local local 10.1.2.1
If there is any misconfiguration, your sugesstion will be highly appreciated.
10-08-2010 10:11 AM
Looks okay to me. Just remember there will be delays in failing over and failing back again because you have delay timers but it shoudl all work fine.
Jon
10-08-2010 10:19 AM
Thanks for your reply.
You mean to say that it will take 380 seconds for standby to cover the failover.
10-11-2010 06:16 AM
it would be great if you set interface tracking on your uplinks to your core router/s. see helpful link below.
http://www.cisco.com/en/US/tech/tk648/tk362/technologies_tech_note09186a0080094e8c.shtml
10-12-2010 10:40 AM
Hi
For testing purpose I shut down vlan interface by using the command shut
but stanby switch was not able to take over.
output of sh stanby brief command on stanby switch
Vl19 19 95 P Active local unknown 10.1.18.1
output of sh stanby brief command on previously active swithc
Vl19 19 110 P Init unknown unknown 10.1.18.1
Please help me Why does it happen ?
10-12-2010 03:31 PM
You may want to verify the two switches are linked together with layer 3..
10-12-2010 11:44 PM
Yes. The two switches are connected to each other and it is trunk.
10-13-2010 12:23 PM
Do you have any of the switchports set to Vlan 19 and a system connected to that port?
ie; switchport access vlan 19, switchport mode access
Sometimes the vlan does not come up completely if not.
Also, doing some HSRP debugs would probably give some clues..
http://www.cisco.com/en/US/tech/tk648/tk362/technologies_tech_note09186a0080094a91.shtml#enhanced
---Mike
10-13-2010 12:31 PM
Yes I have systems to switchport and they are configrured in that vlan ie switcport access vlan 19.
however that vlan is up
The issue I am facing right now is
When I shutdown the vlan 19 and after doing that systems in this vlan cannot ping any other device but i can ping virtual ip
10-13-2010 12:36 PM
samirshaikh52 wrote:
Hi
For testing purpose I shut down vlan interface by using the command shut
but stanby switch was not able to take over.
output of sh stanby brief command on stanby switchVl19 19 95 P Active local unknown 10.1.18.1
output of sh stanby brief command on previously active swithc
Vl19 19 110 P Init unknown unknown 10.1.18.1
Please help me Why does it happen ?
This output shows that it has worked ie.
the standby is active for that vlan and you get the "unknown" because you have shutdown the interface on the other switch.
This is exactly what you would expect to see so can you clarify exactly what problems you are having ?
Jon
10-13-2010 12:40 PM
But presently I am facing this issue
After shuting down the vlan interface 19, the systems in this vlan cannot reach other device.However I can ping the vip from the system.
10-13-2010 12:54 PM
Please try to help me I am trying to solve this issue last two
days.
10-13-2010 01:00 PM
Another thing you may want to check is to make sure that vlan is included in the trunk between both switches and not pruned...
10-13-2010 01:10 PM
I have double checked the vlan is included with the trunk and its not pruned.
10-13-2010 01:20 PM
The only other things that I can think of is to clear arp on both switches and verify the hosts
have the correct ip settings, especially the mask.
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