Gateway Load Balancing Protocol
GLBP provides automatic device backup for IP hosts configured with a single default gateway on an IEEE 802.3 LAN. Multiple first-hop devices on the LAN combine to offer a single virtual first-hop IP device while sharing the IP packet forwarding load. Other devices on the LAN act as redundant GLBP devices that will become active if any of the existing forwarding devices fail.
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glbp 1 weighting track 2 decrement 150
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R2 - Configuration
hostname R2
!
memory-size iomem 5
no ip icmp rate-limit unreachable
ip cef
track 2 interface FastEthernet0/1 line-protocol
!
!
!
!
interface FastEthernet0/0
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet0/0.1
encapsulation dot1Q 2
ip address 192.168.2.253 255.255.255.0
glbp 1 ip 192.168.2.254
glbp 1 priority 200
glbp 1 preempt
glbp 1 weighting 100 lower 60 upper 70
glbp 1 weighting track 2 decrement 150
!
interface FastEthernet0/1
ip address 30.30.30.40 255.255.255.0
duplex auto
speed auto
!
router rip
version 2
network 30.0.0.0
network 192.168.2.0
no auto-summary
!
R2 - Configuration
hostname R2
!
memory-size iomem 5
no ip icmp rate-limit unreachable
ip cef
track 2 interface FastEthernet0/1 line-protocol
!
!
!
!
interface FastEthernet0/0
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet0/0.1
encapsulation dot1Q 2
ip address 192.168.2.253 255.255.255.0
glbp 1 ip 192.168.2.254
glbp 1 priority 200
glbp 1 preempt
glbp 1 weighting 100 lower 60 upper 70
glbp 1 weighting track 2 decrement 150
!
interface FastEthernet0/1
ip address 30.30.30.40 255.255.255.0
duplex auto
speed auto
!
router rip
version 2
network 30.0.0.0
network 192.168.2.0
no auto-summary
!
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