LTM + Link Controller Module big3d timeout and no VS list in wide ips configuration

Greetings Juan,

These articles may be a good place to start troubleshooting / resolving this issue?

SOL14967: Changing the IP addresses on a BIG-IP Link Controller system (11.x)

https://support.f5.com/kb/en-us/solutions/public/14000/900/sol14967.html

SOL13761: BIG-IP DNS and Link Controller require a unique VLAN and IP subnet for each configured link (11.x - 12.x)

https://support.f5.com/kb/en-us/solutions/public/13000/700/sol13761.html

Hope this helps,

Kevin

Hi kevin, i've checked the SOL documents, but my config looks fine. This is my current config. X.Y.Z. is the ISP1 network and A.B.C. is the ISP2 network

TMSH-VERSION: 12.0.0

gtm datacenter /Common/Default_DC { }
gtm link /Common/X.Y.Z.217 {
    datacenter /Common/Default_DC
    monitor /Common/gateway_icmp
    router-addresses {
        X.Y.Z.217 {
            device-name /Common/X.Y.Z.217
        }
    }
}
gtm link /Common/A.B.C.233 {
    datacenter /Common/Default_DC
    monitor /Common/gateway_icmp
    router-addresses {
        A.B.C.234 {
            device-name /Common/A.B.C.233
        }
    }
}
gtm global-settings metrics {
    metrics-collection-protocols { icmp }
}
gtm global-settings metrics-exclusions {
    addresses none
}
 self ip config
net self /Common/internet_300mbps {
    address A.B.C.234/29
    allow-service all
    traffic-group /Common/traffic-group-local-only
    vlan /Common/External
}
net self /Common/internet-100mbps {
    address X.Y.Z.220/29
    allow-service all
    traffic-group /Common/traffic-group-local-only
    vlan /Common/External2
}
net self /Common/red_paso {
    address 192.168.1.254/24
    traffic-group /Common/traffic-group-local-only
    vlan /Common/internal
}

LTM config
ltm pool /Common/DEFAUT-GW {
    load-balancing-mode ratio-least-connections-node
    members {
        /Common/A.B.C.233:0 {
            address A.B.C.233
        }
        /Common/X.Y.Z.217:0 {
            address X.Y.Z.217
        }
    }
    monitor /Common/gateway_icmp
}


net route /Common/default-gw {
    network default
    pool /Common/DEFAUT-GW
}

Hi Juan, The most important item for this issue seems to be missing. The LC has to have knowledge of itself (as a server object).

Ensure those Self-IPs exists as the server object:

tmsh list gtm server

If not, try this procedure to correct that:

https://support.f5.com/kb/en-us/solutions/public/14000/900/sol14967.htmlupdategtmconfig

Kevin

What's odd is that command is simply "replacing" the existing, so it really shouldn't be complaining. It also works fine here:

   

list net self | grep address

    address 10.12.23.120/24
    address 10.11.23.120/24

modify gtm server lc1.kevin.net addresses replace-all-with { 10.11.23.120 10.12.23.120 { device-name lc1.kevin.net }}
modify gtm server lc1.kevin.net addresses replace-all-with { 10.11.23.120 10.12.23.120 { device-name lc1.kevin.net }}

Maybe try to load the configuration to see what happens?

tmsh load sys config
tmsh load sys config gtm-only

Oh, and the server object ends up looking like:

 list gtm server
gtm server lc1.kevin.net {
    addresses {
        10.11.23.120 {
            device-name lc1.kevin.net
        }
        10.12.23.120 {
            device-name lc1.kevin.net
        }
    }
    datacenter Default_DC
    monitor bigip
    virtual-server-discovery enabled
}

Ah, so there must an a server object already defined (somehow). I changed the server name, but used same IP addresses:

 modify gtm server lc2.kevin.net addresses replace-all-with { 10.11.23.120 10.12.23.120 { device-name lc2.kevin.net } }
0107176c:3: Invalid GTM IP, the IP address 10.11.23.120 already exists.

Kevin, it works!!! i found where was defined the self ip defined as a server and delete it.

after that i've created the gtm server (i don't know why it wasn't created when i provisioned) with this command:

tmsh create gtm server f5lchost.cl datacenter Default_DC addresses add {A.B.C.234 X.Y.Z.220}

and (this one)

tmsh modify gtm server f5lchost.cl addresses replace-all-with { A.B.C.234 X.Y.Z.220 { device-name f5lchost.cl_1 } }

thanks Kenvin...you saved my life!!!

Kevin, it works!!! i found where was defined the self ip defined as a server and delete it.

after that i've created the gtm server (i don't know why it wasn't created when i provisioned) with this command:

tmsh create gtm server f5lchost.cl datacenter Default_DC addresses add {A.B.C.234 X.Y.Z.220}

and (this one)

tmsh modify gtm server f5lchost.cl addresses replace-all-with { A.B.C.234 X.Y.Z.220 { device-name f5lchost.cl_1 } }

thanks Kenvin...you saved my life!!!

Oh, don't forget to save it "tmsh save sys config gtm-only" =)