8-73
User
Guide

for

the

Cisco

Application

Networking

Manager

5.2
OL-26572-01
Chapter
8






Configuring

Real

Servers

and

Server

Farms
Configuring
Health

Monitoring
Configuring
DNS

Probe

Expect

Addresses
You
can

specify

the

IP

address

that

the

ACE

expects

to

receive

in

response

to

a

DNS

request.

When

a
DNS
probe

sends

a

domain

name

resolve

request

to

the

server,

it

verifies

the

returned

IP

address

by
matching
the

received

IP

address

with

the

configured

addresses.
Assumption
A
DNS

probe

has

been

configured.

See

the

“Configuring

Health

Monitoring

for

Real

Servers”

section
on
page

8-51

for

more

information.
Procedure
Step
1
Choose
Config
>

Devices

>

context

>

Load

Balancing

>

Health

Monitoring.
The
Health

Monitoring

t

able

ap

pears.
Step
2
In
the

Health

Monitoring
table,
choose

the

DNS

probe

that

you

want

to

configure

with

an
expected
IP
address.
The
Expect

Addresses

table

appears.
Step
3
In
the

Expect

Addresses
table,
click
Add
to

add
an
entry

to

the

Expect

Addresses

table.
The
Expect

Address

configuration

pane

appears.
Note
You
cannot

modify

an

entry

in

the

Expect

Addresses

table.

Instead,

delete

the

existing

entry,

then
add
a

new

one.
Step
4
In
the

IPv4/IPv6

Address
field,
enter
the

IP

address

that

the

ACE

appliance

is

to

expect
as
a

server
response
to

a

DNS

request.

You

can

enter

multiple

addresses

in

this

field.

However,

you

cannot

mix

IPv4
and
IPv6

addresses.
Note
IPv6
requires

ACE

module

and

ACE

appliance

software

Version

A5(1.0)

or

later.
Step
5
Do
one

of

the

following:

•
Click
Deploy
Now

to

deploy
this

configuration

on

t

he
ACE
and

save

your

entries

t

o

the
running-configuration
and

startup-configuration

files.

•
Click
Cancel
to

exit

this

procedure

without

saving

your

entry

and

to

return

to

the

Expect

Addresses
table.

•
Click
Next
t

o
deploy
your

entry

and

to

add

another

IP

Address

to
the
Expect
Addresses
table.
Related
Topics

•
Configuring
Health
Monitoring
for
Real

Servers,

page
8-51

•
DNS
Probe

Attributes,

page
8-57

•
Displaying
Health

Monitoring

Statistics

and
Status
Information,

page
8-77