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Chapter 4: Configuring the High-Level Network

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This creates a new monitor in /config/bigip.conf, as shown in Figure 4.52.

You can display this monitor using the command b monitor my_icmp

show.

Once the custom monitor exists, you associate it with a node or nodes using

the Configuration utility or the bigpipe node command as follows.

b node 11.11.11.1 11.11.11.2 11.11.11.3 monitor use my_icmp

Note

The nodes are identified by IP address only. icmp can ping addresses only,

not specific ports on addresses. This creates three instances of monitor

my_icmp, one for each address. You can display the instances using the

command b node monitor my_icmp show.

Note that each instance takes as its destination the same node it is associated

with. This is because the dest value in my_icmp was left at the default *,

which tells the instance to use the associated node as its destination.

Assigning a specific address to dest, such as 11.11.11.1, would cause the

monitor to verify all three addresses by checking that one address, making

11.11.11.2 and 11.11.11.3 dependent on 11.11.11.1.

monitor my_icmp{

#type icmp

"icmp"

interval 5

timeout 20

}

Figure 4.52 Custom icmp monitor

+- NODE ADDRESS 11.11.11.1 UP

| |

| +- icmp

| 11.11.11.1 up enabled

+- NODE ADDRESS 11.11.11.2 UP

| |

| +- icmp

| 11.11.11.2 up enabled

+- NODE ADDRESS 11.11.11.3 UP

+- icmp

11.11.11.3 up enabled

Figure 4.53 Output for the command b node monitor show

1 2 ... 213 214 215 216 217 218 219 220 221 222 223 ... 425 426

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