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