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New Member

GLBP IP SLA tracking, is it worth it?

Is it worth implementing IP SLAs to track WAN interfaces in this scenario? I want to load-balance, host-dependent, when all WAN interfaces are up. When all three WAN interfaces go down, I want to switch the ACTIVE GLBP Router to BLUE-MPLS-CE. I plan to use ip sla tracking to track these 3 objects, and write a boolean OR statement. when this boolean OR goes down, i want to decrement RED-SW GLBP priority and make BLUE-SW the ACTIVE GLBP Router.

RED-MPLS-CE

Gi0/1, Gi0/2 are L2 shared broadcast domains

Gi0/3 is a preferred WAN connection

BLUE-MPLS-CE

Gi0/1, Gi0/2 are L2 shared broadcast domains

Gi0/3 is a preferred WAN connection

Any help or input is appreciated.

Thanks!

Incase you have trouble reading the text on the side, here it is:

IP SLA config

ip sla 1

icmp-echo 192.168.3.2 source-ip 10.1.1.6

timeout 2000

frequency 2

ip sla 2

icmp-echo 192.168.1.2 source-ip 10.1.1.6

timeout 2000

frequency 2

ip sla 3

icmp-echo 192.168.2.2 source-ip 10.1.1.6

timeout 2000

frequency 2

track 1 ip sla 1 reachability

track 2 ip sla 2 reachability

track 3 ip sla 3 reachability

track 202 list boolean or

object 1

object 2

object 3

ip sla schedule 1 start-time now life forever

ip sla schedule 2 start-time now life forever

ip sla schedule 3 start-time now life forever

interface Vlan10

ip address 10.1.10.2 255.255.255.0

ip ospf network point-to-point

ip ospf hello-interval 1

ip ospf retransmit-interval 2

glbp 71 ip 10.146.71.1

glbp 10 timers msec 200 msec 750

glbp 10 priority 105

glbp 10 preempt

glbp 10 load-balancing host-dependent

glbp 10 name
glbp71 
glbp 10 weighting track 202 decrement 30

Everyone's tags (6)
1 REPLY
New Member

Re: GLBP IP SLA tracking, is it worth it?

Ended up using HSRP to pseudo load balance. A side router is active gateway for odd vlans. B side router is active gateway for even vlans. GLBP did not have an option for ip sla tracking to decrement priority like HSRP does - or I couldn't figure it out.

Sent from Cisco Technical Support iPhone App

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