13-18
User
Guide

for

the

Cisco

Application

Networking

Manager

5.2
OL-26572-01
Chapter
13






Configuring

High

Availability
Configuring
ACE

High

Availability

Groups
Note
For
t

he
replication
process
t

o

function
properly
and
successfully
replicate
the

configuration
for

a

use

r
context
when

switching

from

the

active

context

to

the

standby

context,

ensure

that

each

user

context

has
been
added

to

the

FT

group.

All

applicable

user

contexts

must

be

part

of

an

FT

group

for

redundancy

to
function
properly.
Assumption
At
least

one

high

availability

pair

has

been

configured

(see

the

“Configuring

ACE

High

Availability
Peers”
section

on

pa

ge

13-15 ).
Procedure
Step
1
Choose
Config
>

Devices

>

admin_context

>

High

Availability

(HA)

>

Setup.
The
HA

Management

window

appears

at

the

top

of

the

content

area

and

the

HA

Groups

table

appears

at
the
bottom.
Step
2
In
the

HA

Groups

table

of

the

HA

Management

window,

click
Add
to

add

a

new

high

availability
group.
The
table

refreshes

with

the

configurable

fields.
Step
3
Check
the
Enabled

check

box

to

enable

t

he
high
availability

gr

oup.
Uncheck
the

Enabled

check

box

to

disable

the

high

availability

group.
Step
4
In
the

Context
field,
choose

the

virtual
context
to

associate

with

this

high
availability
group.
Step
5
In
the
Priority
(Actual)

field,

enter

the

pr

iority

that

you

want

to

assign

to
the
first

device

in
the
group.
Valid
entries

are

from

1

to

255.
A
member

of

a

fault-tolerant

group

becomes

the

active

member

through

a

process

based

on

the

priority
assigned.
In

this

process,

the

group

member

with

the

higher

priority

becomes

the

active

member.

When
you
set

up

a

fault-tolerant

pair,

use

a

higher

priority

for

the

group

where

the

active

member

initially
resides.
Step
6
Check
the

Preempt

check

box

to

specify
that

the

group

member
with
the

higher

priority

is
to
always
assert
i

tself

and

become

the

active

member.
Uncheck
t

he

Preempt

check

box

to

specify

t

hat

you

do

not

want

the

gr

oup

member

with

the

hi

gher
priority
to

always

become

the

active

member.
Step
7
In
the

Peer

Priority

(Actual)

field,

enter

the

priority

that
you
want

to

assign
to
the
peer
device

in

the
group.
Valid
entries

are

from

1

to

255.
A
member

of

a

fault-tolerant

group

becomes

the

active

member

through

a

process

based

on

the

priority
assigned.
In

this

process,

the

group

member

with

the

higher

priority

becomes

the

active

member.

When
you
set

up

a

fault-tolerant

pair,

use

a

higher

priority

for

the

group

where

the

active

member

initially
resides.
Step
8
Check
the

Autosync

Run

check

box
to
enable

automatic

synchronization
of
the
running

configuration
fil
es.
Uncheck
the

Autosync

Run

check

box

to

disable

automatic

synchronization

of

the

running

configuration
files.
If


you

di

sable

automatic

synchronization,

you

need

to

update

t

he

configuration

of

the

st

andby
context
manually.

See

th

e

“Synchronizing

Virtual

Cont

ext

Configurations”

section

on

page

6-105 .