GLBP on 2 877's Please help

Unanswered Question
Oct 5th, 2007

I have two 877 routers and I am trying to create a failover and load balancing scenario. They are connected through a HP procurve 1800/24 switch. When I am getting a lot of errors on the standby routers to do with not being able to find the virtual interface with the IP of the active router.

Any help would be gratefully recieved.

Please find example of config bellow

interface Vlan1

ip address

ip nat inside

ip virtual-reassembly

glbp 1 ip

glbp 1 ip secondary

glbp 1 timers 5 18

glbp 1 timers redirect 600 7200

glbp 1 priority 250

glbp 1 preempt delay minimum 60

glbp 1 weighting 250

glbp 1 load-balancing weighted

glbp 1 authentication text some words

glbp 1 name example

glbp 1 weighting track 1 decrement 249

and the show glbp on the bad router

Vlan1 - Group 1

State is Standby

7 state changes, last state change 00:12:49

Virtual IP address is

Secondary virtual IP address

Hello time 5 sec, hold time 18 sec

Next hello sent in 0.084 secs

Redirect time 600 sec, forwarder time-out 7200 sec

Authentication text "text"

Preemption enabled, min delay 60 sec

Active is, priority 250 (expires in 15.072 sec)

Standby is local

Priority 200 (configured)

Weighting 200 (configured 200), thresholds: lower 1, upper 200

Track object 1 state Up decrement 199

Load balancing: weighted

IP redundancy name is "example"

Group members:

0014.f2ce.7f46 ( local

001c.b1ec.11b2 (

There are 2 forwarders (1 active)

Forwarder 1

State is Listen

4 state changes, last state change 00:13:37

MAC address is 0007.b400.0101 (learnt)

Owner ID is 001c.b1ec.11b2

Time to live: 7195.080 sec (maximum 7200 sec)

Preemption enabled, min delay 30 sec

Active is (primary), weighting 250 (expires in 13.080 sec)

Arp replies sent: 3

Forwarder 2

State is Active

1 state change, last state change 02:32:40

MAC address is 0007.b400.0102 (default)

Owner ID is 0014.f2ce.7f46

Preemption enabled, min delay 30 sec

Active is local, weighting 200

Arp replies sent: 2

Sorry I feel I should clarify the problem appears to be that when traffic is sent to the main router it is fine but then no traffic can go to the interface and you cannot ping the interface. I think this is when it is forwarding to the secondary.

Debug errors gives

*Apr 4 22:24:41.011: GLBP: Vl1 API ARP active virtual address not foun


for a variety of ip's in the range

I have this problem too.
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jsivulka Thu, 10/11/2007 - 08:33

There is an opened HSRP bug which is affected the cisco 800 platforms: CSCsb98540 HSRP not listening to virtual mac-address on vlan interface. It seems that the router does not transmit the packets from L2 to L3. As a possible workaround, can you try to configure 'standby use-bia' on the routers?


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