12-13-2012 08:18 AM - edited 03-04-2019 06:24 PM
HI
we started a new branch ,there two link is there one 100mbps and 30 mbps from diffrent vendors. one link is connected to first multilayerswitch
and anoter is connected to second multilayer switch..
in this two switch i want to configure two default route pointing to our core mulitlayer switchr in datacenter
we want to configure hsrp and ipsla(if wan 100 mbps down, secondary will be up) for that i configure in gns3 ,hsrp work but wan tracking is not working
configuration of swithes
primarymulitalyerswitch(config)#interface vlan 1
ip add 10.10.16.10 255.255.252.0
no sh
standby 2 ip add 10.10.16.1
standby 2 preempt
standby 2 priority 200
exit
ip route 0.0.0.0 0.0.0.0 1.1.1.2(wan)
ip sla monitor 1
type echo protoclol ipicmpecho 50.0.0.1(loopback)
timeout 2000
thersold 2000
frequency 10
ip sla monitor shedule 1 startime now life foerver
track 1 rtr 1 reachibility
interface valn 1
standyby 2 track 1 decre 150
secondarymultilayerswitch(config)#interface valn 1
ip add 10.10.16.20 255.255.252.0
no sh
standby2 ip add 10.10.16.1
standby2 priority 100
exit
ip route 0.0.0.0 0.0.0.0 2.2.2.2(wan)
datacentermultilayerswitch(config)ip route10.10.16.0 255.255.252.0 1.1.1.1(primarymultialyerswitchinterfaceip)
ip route 10.10.16.0 255.255.252.0 2.2.2.1(secondaymultlayeswitchinterfaceip)
interface loopbak 0
ip add 50.0.0.1 255.255.2552.255
if i shoutdown vlan 1 of primary switch anoterworkig fine but if i down wan interface or shutodown loopback its not workign
thanku
,
12-13-2012 08:37 AM
Hi,
Because there is no HSRP object tracking in your configuration. It is used to reduce priority of active HSRP to make it lower than standby then standby will take over.
Example:
Active HSRP:
ip sla monitor 1
icmp-echo 1.1.1.1
freq 5
ip sla monitor shedule 1 startime now life forever
track 1 rtr 1 reachibility
int vlan 10
ip add 10.0.0.2 255.255.255.0
standby 10 ip 10.0.0.1
standby 10 priority 150
standby 10 preempt
standby 10 track 1 decrement 55
Standby:
int vlan 10
ip add 10.0.0.2 255.255.255.0
standby 10 ip 10.0.0.1
In this example if ISPs IP address 1.1.1.1 is not reachable HSRP tracking will decrement priority to 55 and it will be 95 less than current standby. Because of it standby becomes now active. Preemption option allows to standby HSRP to become active again. By default priority is 100.
Hope it will help.
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