Forum Discussion
munish_64882
Nimbostratus
Nimbostratusaccess lost when click force standby
Hi All,
I am new to F5 technology.. so I am not aware if its a common behaviour of F5.
1. I have configured my Load Balancers to work in Active/standby state. but both the devices are always in active state.
Now, When I click force standby on secondary unit of LB, I lose access to device for few seconds. but when it comes up, Its again active.
Please tell me how should I cpme out of this situation.
19 Replies
- boneyard
MVP
sounds like something is not correctly configured.
which version of TMOS 10 or 11? in case of 11 have you configured a device group? what are the Redundancy State Preferences? 
munish_64882Its 10.2.1 build 249
redundant stae preference is set to standby on Standby unit but its is still active.- nitass
Employee
is unicast address for network failover setting correct?
Specifying unicast addresses for failover
When specifying unicast, rather than multicast, addresses for failover, you need to specify two pairs of IP addresses, where one of the pairs indicates the management IP addresses of the two units. The other pair indicates two self IP addresses, one for VLAN HA on each unit.
Configuring High Availability
http://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/tmos_management_guide_10_1/tmos_high_avail.html1051950 - munish_64882yes..
actually, we are not using management interface on LTMs. We are accessing these throughinternal VLAN self IP addresses.
So In HA, I have specified these addresses and HA VLAN self IP addresses. I have confirmed that they are correctly configured. - munish_64882any updates from anybody please?
- nitasscan you post "b failover list" and "b mgmt list" output from both units?
- munish_64882Load Balancer LB002
[root@ULFINPG-LB002:Active] config b failover list
failover {
force standby enable
network failover enable
peer mgmt addr 10.255.155.3
redundant enable
standby link down time 5
unit 2
unicast peer SYNC {
dest addr 10.255.155.3
port 1026
source addr 10.255.155.4
}
}
Load Balancer LB001
[root@ULFINPG-LB001:Active] config b failover list
failover {
force active enable
network failover enable
peer mgmt addr 10.255.155.4
redundant enable
standby link down time 5
unit 1
unicast peer SYNC {
dest addr 10.255.155.4
port 1026
source addr 10.255.155.3
}
} - nitasscan you try to use mgmt ip in peer mgmt addr?
- munish_64882we are not using saperate management addresses.
We are accessing the device through VLAN self IP addresses. - nitasswe are not using saperate management addresses.
We are accessing the device through VLAN self IP addresses.yes, i know but i understand peer mgmt addr has to be mgmt ip i.e. not selfip. can you try?
