12-7

User

Guide

for

the

Cisco

Application

Networking

Manager

5.2

OL-26572-01

Chapter

12

Configuring

Network

Access

Configuring

Virtual

Context

VLAN

Interfaces

Interface

Type

Role

of

the

virtual

context

in

the

network

topology

of

the

VLAN

interface:

•

Routed—In

a

routed

topology,

the

ACE

virtual

context

acts

as

a

router

between

the

client-side

net

work

and

the

server-side

network.

In

this

topology,

every

real

ser

ver

for

the

application

must

be

routed

through

the

ACE

virtual

context,

either

by

setting

the

default

gateway

on

each

real

server

to

the

virtual

contexts

server-side

VLAN

interface

address,

or

by

using

a

separate

router

with

appropriate

routes

configured

between

the

ACE

virtual

context

and

the

real

servers.

Note

A

routed

VLAN

i

nterface

can

support

both

IPv4

and

IPv6

addresses

at

the

same

time.

IPv6

requires

ACE

module

and

ACE

appliance

software

Version

A5(1.0)

or

later.

•

Bridged—In

a

bridged

topology,

the

ACE

virtual

context

bridges

two

VLANs,

a

client-side

VLAN

and

a

real-server

VLAN,

on

the

same

subnet

using

a

bridged

virtual

interface

(BVI).

In

this

case,

the

real

server

routing

does

not

change

to

accommodate

the

ACE

virtual

context.

Instead,

the

ACE

virtual

context

becomes

a

“bump

in

the

wire”

that

transparently

handles

traffic

to

and

from

the

real

servers.

•

Unknown—Choose

Unknown

if

you

ar

e

unsure

of

the

network

topology

of

t

he

VLAN

interface.

IP

Address

Field

that

appears

for

the

Routed

Interface

Type.

Enter

the

IPv4

address

assigned

to

this

interface.

This

address

must

be

a

uni

que

IP

ad

dress

that

i

s

not

used

i

n

another

context.

Duplicate

IP

addresses

in

different

contexts

are

not

supported.

If

this

interface

is

only

used

for

IPv6

traffic,

entering

an

IPv4

address

is

optional.

IPv6

requires

ACE

module

and

ACE

appliance

sof

tware

Version

A5(1.0)

or

later.

Alias

IP

Address

Field

that

appears

for

the

Routed

interface

type.

Enter

the

IPv4

address

of

the

alias

that

this

interface

is

associated

with.

Peer

IP

Address

Field

t

hat

appears

f

or

the

Routed

interface

t

ype.

Enter

the

IPv4

address

of

the

remote

peer.

Netmask

Field

t

hat

appears

f

or

the

Routed

interface

t

ype.

Choose

t

he

subnet

mask

to

be

used.

BVI

Field

that

appears

for

the

Bridged

interface

type.

Enter

the

number

of

the

bridge

group

to

be

configured

on

this

VLAN.

When

you

configure

a

bridge

group

on

a

V

LAN,

t

he

ACE

automatically

makes

it

bridged.

Valid

entries

are

from

1

to

4094.

Admin

Status

Administrative

state

of

the

interface.

Specify

whether

you

want

the

interface

to

be

Up

or

Down.

Enable

MAC

Sticky

Check

box

that

instructs

the

ACE

to

convert

dynamic

MAC

addresses

to

sticky

secure

MAC

addresses

and

to

add

this

information

to

the

running

configuration.

Uncheck

the

check

box

to

indicate

that

the

ACE

is

not

to

convert

dynamic

MAC

addresses

to

sticky

secure

MAC

addresses.

Table

12-1

VLAN

Interface

Attributes

(continued)

Field

Description