13-28
User
Guide

for

the

Cisco

Application

Networking

Manager

5.2
OL-26572-01
Chapter
13






Configuring

High

Availability
Configuring
ACE

Peer

Host

Tracking

Probes

•
Configuring
ACE

High

Availability

Groups,

page
13-17

•
Tracking
ACE
VLAN

Interfaces

for

High

Availability,

page
13-24
Configuring
ACE

Peer

Host

Tracking

Probes
You
can

configure

probes

on

the

standby

member

of

a

high

availability

group

to

track

the

health

of

the
gateway
or

host.
Assumptions
This
topic

assumes

the

following:

•
At
least

one

host

tracking

process

for
high
availability
has

been

configured

(see
Tracking
Hosts

for
High
Availability,

page

13-25 .)

•
At
least

one

health

monitoring
probe
has

been

configured

(see
Configuring
Health

Monitoring

for
Real
Servers,

page

8-51 ).
Procedure
Step
1
Choose
Config
>

Devices

>

ACE

admin_context

>

HA

Tracking

And

Failure

Detection

>

Hosts.
The
Track

Host

table

appears.
Step
2
In
the

Track
Host
table,

choose

the
tracking
process

that

you

want

to

modify,

and

click

the
Peer
Track
Host
Probe

ta

b.


The
Peer

Track

Host

Probes

table

appears.
If
the

Track

Host

Probe

and

Peer

Track

Host

Probes

tabs

do

not

appear

below

the

Track

Host

table,

click
Show
Tabs

below

the

Track

Host

table

name.
Step
3
In
the

Peer

Track

Host

Probes

table,

click
Add

to

add

a

peer

host

tracking

probe,

or

choose

an

existing
peer
host

tracking

probe

and

click

Edit

to

modify

it.
The
Peer

Track

Host

Probes

configuration

window

appears.
Step
4
In
the
Probe
Name

field
of
the
Peer

Track
Host

Probes

configuration

window,

choose

the

name

of

the
probe
to

be

used

for

the

peer

host

tracking

process.
Step
5
In
the

Priority

field,
enter
a

priority

for
the
host
you
are

tracking

by

the

standby

member

of

the

high
availability
group.
Valid
entries

are

from

0

to

255

with

higher

values

indicating

higher

priorities.

Assign

a

priority

value
based
on

the

relative

i

mportance

of


the

gateway

or

host


t

hat

t

he

probes

ar

e

t

racking.

If

the

host


goes
down,
the

ACE

decrements

the

priority

of

the

high

availability

group

on

the

standby

member

by

the

value
in
this

Priority

field.
Step
6
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.

You

return

to

the

Peer

Track

Host

Probes
table.
The

table

includes

the

added

probe.

•
Click
Cancel
to

exit

this
procedure
without

saving

your

entries

and

to

return

to

the

Peer
Track
Host
Probes
table.

•
Click
Next
t

o
deploy
your

entries

and

to
configure
another
peer
track

host

pr

obe.