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core switch static route to WAN router with GLBP

edongskiu2
Level 1
Level 1

Hi,

 

I am having trouble with GLBP when we forced a failover to the 2nd router. First router is running normally but after adding the 2nd router and tried a failover, my core switch is not reachable. Is this a static IP issue or GLBP issue? I can ping the core switch from the 2nd router; all other VLAN is not reachable outside of the site

virtual GLBP address is 10.1.1.50

static configuration (single core switch only)

ip route 0.0.0.0 0.0.0.0 10.1.1.50

gig0/21
switchport access vlan 5
 switchport mode access
 logging event status
 speed 1000
 duplex full
 spanning-tree portfast

 

gig0/21 

switchport access vlan 5
 switchport mode access
 logging event status
 speed 1000
 duplex full
 spanning-tree portfast

 

GLBP:

router1

gig0/1

ip address x.x.x.x. 255.255.255.252 secondary
 ip address 10.5.1.65 255.255.255.240

 

 glbp 1 ip 10.1.1.50
 glbp 1 timers 5 15
 glbp 1 priority 110
 glbp 1 preempt
 glbp 1 weighting track 100 decrement 20
 glbp 1 weighting track 101 decrement 20

 

router2

ip address x.x.x.x. 255.255.255.252 secondary
 ip address 10.1.1.67 255.255.255.240

 glbp 1 ip 10.1.1.50
 glbp 1 timers 5 15
 glbp 1 priority 105
 glbp 1 preempt
 glbp 1 weighting track 100 decrement 20
 glbp 1 weighting track 101 decrement 20

 

 

2 Replies 2

Moh Mogh
Level 1
Level 1

Hi,

Could be routing/subnetting issue. Can you make sure that your IP addressing is correct? I see that the primary address of the Core Routers are in different network.

router1:
ip address x.x.x.x. 255.255.255.252 secondary
 ip address 10.5.1.65 255.255.255.240

router2:
ip address x.x.x.x. 255.255.255.252 secondary
 ip address 10.1.1.67 255.255.255.240

What's the Core Switch IP Address? Is the core switch in the same subnet with VIP?

sorry for the typo :) 

router1:
ip address x.x.x.x. 255.255.255.252 secondary
 ip address 10.1.1.65 255.255.255.240

router2:
ip address x.x.x.x. 255.255.255.252 secondary
 ip address 10.1.1.67 255.255.255.240

 

core switch IP is 10.1.1.66; yes they belong to the same subnet