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ATM to Frame Relay Service - QOS

mtobkes
Level 1
Level 1

What would be the best QOS method to use in the following situation, and where to place the policy - i.e. hub, spoke or both:

Main site = DS3 (ATM)

Remote sites = T1 (frame relay)

Need to ensure that client (remote) sessions with server (main site) get priority. I may have to priorities other traffic as well in the future.

2 Replies 2

jrahm
Level 1
Level 1

I classify in both directions. Here is an example protecting 60% of the bandwidth for Microsoft RDP traffic, alloting 10% to telnet traffic, and 5% at less than best effort to printer traffic:

class-map match-any SILVER-IN

match access-group name SILVER-IN

class-map match-any LTBE-IN

match access-group name LTBE-IN

class-map match-any GOLD-IN

match access-group name GOLD-IN

class-map match-any LTBE

description Desktop Printing data

match access-group name LTBE

match ip dscp 6

class-map match-any SILVER

match access-group name SILVER

match ip dscp af11

class-map match-any GOLD

description RDP Traffic

match access-group name GOLD

match ip dscp af21

!

!

policy-map WAN-EDGE-IN

class LTBE-IN

set ip dscp 6

class GOLD-IN

set ip dscp af21

class SILVER-IN

set ip dscp af11

class class-default

set ip dscp default

policy-map WAN-EDGE

class GOLD

bandwidth percent 60

class SILVER

bandwidth percent 10

class LTBE

bandwidth percent 5

class class-default

fair-queue

interface FastEthernet0/1

service-policy input WAN-EDGE-IN

!

interface ATM2/0.10 point-to-point

pvc my_pvc 1/10

vbr-nrt 384 270 36

service-policy output WAN-EDGE

ip access-list extended GOLD-DATA

permit tcp any eq 3389 any

permit tcp any any eq 3389

ip access-list extended GOLD-DATA-IN

permit tcp any eq 3389 any

permit tcp any any eq 3389

permit udp any eq 3389 any

permit udp any any eq 3389

ip access-list extended LESS-THEN-BE-DATA

permit tcp any eq 9100 any

permit tcp any any eq 9100

ip access-list extended LESS-THEN-BE-DATA-IN

permit tcp any eq 9100 any

permit tcp any any eq 9100

permit udp any eq 9100 any

permit udp any any eq 9100

ip access-list extended SILVER-DATA

permit tcp any eq telnet any

permit tcp any any eq telnet

ip access-list extended SILVER-DATA-IN

permit tcp any eq telnet any

permit tcp any any eq telnet

Thanks for the info -

Just one question. At the WAN edge router you apply the policy inbound to the ethernet inferface as opposed to outbound on the WAN interface. What is the advantage of doing this if any?

Thanks