13-15
User
Guide

for

the

Cisco

Application

Networking

Manager

5.2
OL-26572-01
Chapter
13






Configuring

High

Availability
Configuring
ACE

High

Availability

Peers
Configuring
ACE

High

Availability

Peers
Note
This
functionality
is

available

for
only
Admin

contexts.
Fault-tolerant
peers

transmit

and

receive

heartbeat

packets

and

state

and

configuration

replication
packets.
The

standby

member

uses

the

heartbeat

packet

to

monitor

the

health

of

the

active

member,

while
the
active

member

uses

the

heartbeat

packet

to

monitor

the

health

of

the

standby

member.

When

the
heartbeat
packets

ar

e

not


received

from

the

active

member

when

expected,

switchover

occurs

an

d

th

e
standby
member

assumes

all

active

communications

previously

on

the

active

member.
Use
this

procedure

to

do

the

following

tasks:

•
Identify
the

two

members

of
a
high

availability

pair.

•
Assign
IP

addresses

to

the

peer

ACEs.

•
Assign
a
fault-tolerant
VLAN

to

high
availability
peers

and
bind
a

physical

gigabit

Ethernet
interface
to

the

FT

VLAN.

•
Configure
heartbeat

frequency

and

count
on
the
ACEs
in
a
fault-tolerant

VLAN.
Note
For
ANM
to

properly

manage

high
availability
peers,

ensure

that

the

combination

of
FT

interface

VLAN
along
with

IP

and

peer

IP

address

always

be

unique

across

every

pair

of

ACE

devices

in

high

availability
when
those

devices

are

imported

into

ANM.

For

details,

see

the

“ANM

Requirements

for

ACE

High
Availability”
section

on

pa

ge

5-8 .
Assumption
At
least

one

fault-tolerant

VLAN

has

been

configured.
Note
A
fault-tolerant
VLAN
cannot
be
used

for

other

network

traffic.
Procedure
Step
1
Choose
Config
>

Devices

>

admin_context

>

High

Availability

(HA)

>

Setup.
The
HA

Management

window

ap

pears

with

two

columns;

one

for

th

e

selected

ACE

an

d

one

for

a

pe

er
AC
E

.
Step
2
Click
Edit
and
enter
the

information

for

the

primary

ACE

and

the

peer

ACE

as

described

in
Ta
b

l

e
13-4
.
Ta
b

l

e


13-4
High
Availability

Management

Configuration

Attributes
Field
This
Device
Peer
Device
Module
Name
of

the

ACE
Not
applicable.
VLAN
Fault-tolerant
VLAN

to

be

used

for

this

high

availability

pair.

Valid
entries
are

from

1

t

o

4094.
Note
This
VLAN

cannot

be

used

for

ot

her

network

traffic.
Not
applicable.