3-12
User
Guide

for

the

Cisco

Application

Networking

Manager

5.2
OL-26572-01
Chapter
3






Using

ANM

Guided

Setup
Using
Application

Setup
Using
Application

Setup
This
section

includes

the

following

topics

on

application

setup:

•
ACE
Network

Topology

Overview,

page
3-12

•
Using
Application

Setup,

page
3-14
ACE
Network

Topology

Overview
With
respect

to

ACE

configuration,

the

network

t

opology

describes

where—which

VLAN

or
subnet—client
traffic

comes

into

the

ACE

and

where

this

traffic

is

sent

to

real

servers.

Network
configuration
for

ACE

load

balancing

depends

on

the

surrounding

topology.

By

specifying

to

ANM

the
topology
that

is

appropriate

for

your

networking

application,

ANM

can

present

more

relevant

options
and
gui

dance.
The
network

topology

is

often

determined

solely

by

your

existing

network;

however,

the

goals

for

your
ACE
deployment

can

also

play

a

role.

For

example,

when

ACE

acts

as

a

router

between

clients

and
servers,
it

provides

a

level

of

protection

by

effectively

hiding

the

servers

from

the

clients.

On

the

other
hand,
for

a

routed

topology

to

work,

each

of

those

servers

must

be

configured

to

route

back

through

the
ACE,
which

can

be

a

significant

change

to

the

network

routing.
The
ACE

is

also

capable

of

bridging

the

client

and

server

VLANs,

which

does

not

affect

server

routing.
However,
it

does

require

the

network

to

have

VLANs

set

up

appropriately.
If
you

ar

e

not


sure

what

topology

to

use,

or


do

not

want

to

make

topology

decisions

i

mmediately,

use
the
“one-armed”

topology.

The

one-armed

topology

does

not

typically

require

any

changes

to

an

existing
network
and

can

be

set

up

with

mi

nimal

knowledge

of

the

network.

You

can

then

expand

your

ACE
network
topology

to

routed

mode

or

br

idged

mode

to

better

suit

your

networking

requirements.
Figure
3-1

illustrates

the

one-armed

network

topology.
Figure
3-1
Example
of

a

One-Armed

Network

Topology
ACE
Vir

tual
Context
Real
Ser
vers
Router/
Switch
Client

to

ACE

Request
Client
IP

(src):<a.b.c.d>
VIP

(dst):

172.16.5.10
Client

to

ACE

Request
Nat
Pool

IP

(src):

172.16.5.101
Ser

ver

IP

(dst):

192.168.1.11
ACE

VLAN
e.g.
172.16.5.0/16
Ser

ver

VLAN
e.g.
192.168.1.0/16
Client
Network