7-48

User

Guide

for

the

Cisco

Application

Networking

Manager

5.2

OL-26572-01

Chapter

7

Configuring

Virtual

Servers

Configuring

Virtual

Servers

Step

11

(Optional)

If

you

are

using

the

ACE

appliance

(all

versions)

or

ACE

module

version

A4(1.0)

and

later,

in

the

Compression

Method

field,

choose

the

HTTP

compression

method

to

indicate

how

the

ACE

appliance

is

to

compress

packets

when

a

client

request

indicates

that

the

client

browser

is

capable

of

packet

compression.

By

default,

HTTP

compression

is

di

sabled

i

n

the

ACE.

When

you

configure

HTTP

compression

usi

ng

the

ACE,

the

appliance

compresses

data

in

the

HTTP

GET

responses

from

the

real

servers.

The

ACE

does

not

compress

HTTP

requests

from

clients

or

t

he

HTTP

headers

in

the

server

responses.

Note

By

default,

the

ACE

appliance

supports

HTTP

compression

at

rates

of

100

megabits

per

second

(Mbps).

Installing

an

optional

HTTP

compression

license

allows

you

to

increase

this

value

to

a

maximum

of

2

Gbps.

See

the

Cisco

4700

Series

Application

Control

Engine

Appliance

Administration

Guide

for

information

on

ACE

licensing

options.

Options

ar

e

as

follows:

•

Gzip—Specifies

the

gzip

compression

format

as

the

method

to

use

when

the

client

browser

supports

both

the

deflate

and

gzip

compression

methods.

Gzip

is

the

file

format

for

compression

described

in

RFC1952.

•

Deflate—Specifies

the

deflate

compression

format

as

the

method

to

use

when

the

client

browser

supports

both

the

deflate

and

gzip

compression

methods.

Deflate

is

the

data

format

for

compression

described

in

RFC1951.

•

N/A—HTTP

compression

is

disabled.

Aggregate

State

Check

box

to

indicate

that

the

state

of

the

primary

server

farm

is

to

be

tied

to

the

state

of

all

real

servers

in

the

server

farm

and

in

the

backup

server

farm,

if

configured.

The

ACE

declares

the

primary

server

farm

down

if

all

real

servers

in

the

primary

server

farm

and

all

real

servers

in

the

backup

server

farm

are

down.

Uncheck

the

check

box

if

the

state

of

the

primary

server

farm

is

not

to

be

tied

to

all

real

servers

in

the

server

farm

and

i

n

the

backup

ser

ver

farm.

Sticky

Enabled

On

Backup

Server

Farm

Check

box

to

indicate

that

the

backup

server

farm

is

sticky.

Uncheck

the

check

box

if

the

backup

server

farm

is

not

sticky.

Replicate

On

HA

Peer

Check

box

to

indicate

that

the

virtual

server

is

to

replicate

sticky

table

entries

on

the

backup

server

farm.

If

a

failover

occurs

and

this

option

is

selected,

the

new

active

server

farm

can

maintain

the

existing

sticky

connections.

Uncheck

the

check

box

to

indicate

that

the

virtual

server

is

not

to

replicate

sticky

table

entries

on

the

backup

server

farm.

Ti

me

o

u

t

(Minutes)

Number

of

minutes

that

the

virtual

server

keeps

the

sticky

information

for

a

client

connection

in

the

sticky

table

after

the

l

atest

client

connection

terminates.

Valid

entries

ar

e

from

1

t

o

65535;

the

default

is

1440

minutes

(24

hours).

Ti

me

o

u

t

Ac

t

ive

Connections

Check

box

to

specify

that

the

virtual

server

is

to

time

out

sticky

table

entries

even

if

active

connections

exist

after

the

sticky

timer

expires.

Uncheck

th

e

c

heck

bo

x

to

specify

th

at

t

he

virtual

is

not

t

o

ti

me

out

sticky

t

able

en

tries

even

i

f

ac

tive

connections

exist

after

the

sticky

timer

expires.

This

behavior

is

the

default.

Table

7-15

Sticky

Group

Attributes

(continued)

Field

Description