EXP-COS mapping on 3750M

Hi,
I am using 3750 as a L2 switch in between MPLS PE and MPLS P router. The ports (on 3750M) connecting to MPLS devices are just L2 ports no IP or no LDP. I want to know if I can configure QOS on L2 ports of 3750. Can I map MPLS EXP to COS on switch?
regards,
Gaurav

Hi,
You will not be able to do this, as the switches look at the layer 2 or 3 cos markings, whilst the MPLS exp value is at layer 2.5, between the IP and MAC layers.
But if the MPLS exp value has been set from that of the IP precedence/DSCP from the CE packet, aka uniform mode MPLS QOS, then you can just use your cos maps to match the ip dscp/precendence to cos etc.
HTH
LR

Similar Messages

COS to EXP bits mapping

Hi Guys,
theoretically and practicaly the DSCP or IP prec values are copied to EXP bits of shim header.
Does that same applies to when Atom is configured ?? because in Atom the PE receives traffic from CE and that could be vlan tagged. PE imposes the MPLS tag received from egree PE and then imposes the tunnel tag and send it to the egress PE.
are the COS values copied to the appropriate EXP bits at this time ??

Thanks for the reply.
What is the command to see the cos-dscp mapping from a GSR 10k router, there is no mls qos command?
Here are the config:
Hub CE:
njli2pece1#sh run int gi3/24
interface GigabitEthernet3/24
no ip address
load-interval 30
wrr-queue bandwidth percent 30 20 50
wrr-queue queue-limit 40 30 15
wrr-queue random-detect min-threshold 1 60 80 100 100 100 100 100 100
wrr-queue random-detect min-threshold 2 60 80 99 99 100 100 100 100
wrr-queue random-detect min-threshold 3 99 100 100 100 100 100 100 100
wrr-queue random-detect max-threshold 1 80 100 100 100 100 100 100 100
wrr-queue random-detect max-threshold 2 80 100 100 100 100 100 100 100
wrr-queue cos-map 2 3 6
wrr-queue cos-map 2 4 7
wrr-queue cos-map 3 1 3
wrr-queue cos-map 3 2 4
mls qos trust dscp
no cdp enable
end
njli2pece1#sh run int gi3/24.112
interface GigabitEthernet3/24.112
encapsulation dot1Q 112
ip vrf forwarding r1-aiggs
ip address 68.139.194.194 255.255.255.252
ip flow ingress
ip flow egress
no cdp enable
end
Hub PE:
worge01>show config | b GigabitEthernet4/1.49659
interface GigabitEthernet4/1.49659
encapsulation dot1Q 112
ip vrf forwarding V127453:AmericanInternational
ip address 68.139.194.193 255.255.255.252
ip access-group 101 in
no ip redirects
no ip unreachables
no ip directed-broadcast
no ip proxy-arp
ip mtu 1500
plim qos input map cos 5 queue low-latency
service-policy input DSCP_CE-PE_ETM_G=5008K_R=300M
service-policy output DSCP_PE-CE_282000K_gsr_6Q !
worge01>show policy-map DSCP_CE-PE_ETM_G=5008K_R=300M
Policy Map DSCP_CE-PE_ETM_G=5008K_R=300M
Class class-default
police cir 300000000 bc 37500000 be 37500000
conform-action transmit
exceed-action drop
service-policy DSCP_CE-PE_ETM_G=5008000_gsr
worge01>show policy-map DSCP_CE-PE_ETM_G=5008000_gsr
Policy Map DSCP_CE-PE_ETM_G=5008000_gsr
Class dscp_EF_ipprec_5_5Qs
police cir 5008000 bc 626000 be 1252000
conform-action set-mpls-exp-imposition-transmit 5
exceed-action drop
Class dscp_AF4x_ipprec_4_5Qs
set mpls experimental 4
Class dscp_AF3x_ipprec_3_6_7_5Qs
set mpls experimental 3
Class dscp_AF2x_ipprec_2_5Qs
set mpls experimental 2
Class ip_best_effort_BE
set mpls experimental 0
worge01>sh config | b dscp_EF_ipprec_5_5Qs
class-map match-any dscp_EF_ipprec_5_5Qs
match ip dscp 40 46
Remote CE:
mdhv113ce1#sh run int s0/0/0:0
interface Serial0/0/0:0
no ip address
encapsulation frame-relay IETF
load-interval 30
service-policy input Verify-Dscp
service-policy output TypeB-Remote-QOS-Out
end
mdhv113ce1#sh run int s0/0/0:0.100
interface Serial0/0/0:0.100 point-to-point
ip address 159.24.187.178 255.255.255.252
ip flow ingress
ip flow egress
snmp trap link-status
frame-relay interface-dlci 100 IETF
end
Remote PE:
ptnes05>show config | b Serial8/0/2.1/28:1.20505
interface Serial8/0/2.1/28:1.20505 point-to-point
ip vrf forwarding V128431:AmericanInternational
ip address 159.24.187.177 255.255.255.252
ip access-group 101 in
no ip redirects
no ip unreachables
no ip proxy-arp
frame-relay interface-dlci 100
service-policy input DSCP_CE-PE_ETM_G=448000
service-policy output DSCP_PE-CE_1536K_6Q
ptnes05>show policy-map DSCP_PE-CE_1536K_6Q
Policy Map DSCP_PE-CE_1536K_6Q
Class class-default
shape 1536
service-policy DSCP_PE-CE_1344000_to_120M_6Q
ptnes05>show policy-map DSCP_PE-CE_1344000_to_120M_6Q
Policy Map DSCP_PE-CE_1344000_to_120M_6Q
Class dscp_EF_ipprec_5_5Qs
priority
police percent 50 25 ms 0 ms conform-action transmit exceed-action transmit violate-action drop
ptnes05>sh config | b dscp_EF_ipprec_5_5Qs
class-map match-any dscp_EF_ipprec_5_5Qs
match ip dscp cs5 ef

DSCP to CoS mapping: Avaya traffic

It appears that Avaya marks its voice traffic as follows:
L2 signaling cos 6 L3 signaling dscp 34
L2 audio cod 6 L3 audio dscp 46
Has anyone interacted with theses settings and what are the right mappings for 6500 series Modules?
I am about to use the following:
#mls qos map dscp-cos 34 46 to 6
#mls qos map dscp-cos 48 to 5 "move IP control to cos 5)
#mls qos map cos-dscp 0 8 16 24 32 46 48 56 leave cos to dscp unchanged.
Finally use: #mls qos thrust dscp on input interfaces.
Can anyone clarify?
Thanks.

The 6608 and 6624 internal port is treated as trust-cos to the Catalyst 6000. So the default COS-to-DSCP mapping of the cards will determine the DSCP values with which the IP packets are marked unless they are changed in the switch.
The 6608 and 6624 will tag packets as follows:
COS = 5 for rtp traffic
COS = 3 for signalling traffic
By default on the Catalyst 6000, these COS values map in IP packets to DSCP 24 (COS = 3) and 40 (COS = 5) as shown in the table below.
Generally, the recommended DSCP values to use in a VoIP network differ slightly. They are:
DSCP = 46 for rtp traffic (Recommended Expedited Forwarding (EF) value)
COS = 26 for signalling traffic (AF31)
It may be necessary to change the default COS-DSCP mapping on the Catalyst 6000 so that the DSCP markings in packets generated by the 6608 and 6624 cards conform to the network policy. For example, if other devices in the network are marking packets with the recommended values.
Information on how to change the default COS-DSCP mapping is provided in the Mapping Received CoS Values to Internal DSCP Values section of Catalyst 6000 Family Software Configuration Guide.

DSCP and CoS mapping to use uAPSD

Hi CISCO experts, I'm trying to map some traffic to a DSCP and CoS priority. The fact is that doesn't work.
Steps:
1.Set personal filter (myfilter)to forward from specific IP.
2.Set QoS policy: my_policy --> myfilter-CoS (4).
3. Add policy to 802.11g.
When I look up the IP traces DSCP is allways 0x00 (Best Efford).
If I map DSCP (best efford) to DSCP (vocie) doesnt work either.
What can I do? Im trying to emulate AC_VO or AC_VE so I can force the uAPSD protocol to work.
Best regards

Are you using a Cisco WLAN controller or autonomous AP?
You would need to ensure that the RTP (voice) packets to the AP has DSCP = EF.
There is an auto policy in the WLAN controller to map EF to UP6.
For autonomous, will need to create a QoS policy to do this.
But you do not want to map DSCP = 0 to UP6!
This defeats the purpose.
Will only want RTP packets to be marked as EF.
See the WLAN SRND and 7921G Deployment Guides for more info.
http://www.cisco.com/application/pdf/en/us/guest/netsol/ns279/c649/ccmigration_09186a00808d9330.pdf
http://www.cisco.com/en/US/docs/voice_ip_comm/cuipph/7921g/5_0/english/install/guide/7921dply.pdf

Dot1q-tunnel cos mapping

Is it possible to map the cos from a tagged frame into the metro tag cos field when it enters a dot1q-tunnel port?
The only option I see to set cos on a dot1q-tunnel port is to statically configure a value using the <mls qos cos <value> > commmand, this is with the 3750.
Thanks

It all depends on the hardware.
For example 3750 Metro support copying inner CoS value to the outer tag. It is also supported by 4500s with SUPV-10GE.
Also this functionality is possible with ES20 cards in 7600.
Overall there is not much hardware that support it. The functionality you are looking for is called "ntelligent IEEE 802.1Q tunneling QoS"
http://www.cisco.com/en/US/docs/switches/metro/catalyst3750m/software/release/12.2_25_seg_seg1/configuration/guide/swtunnel.html#wp1010491

EXP to COS : MPLS on Catalyst

Hi,
Which Cisco switch supports EXP to COS mapping , MPLS support on swicth , other than 6500
Thx,
GP

Hello Gaurav,
I'm afraid you need a C6500 or C7600 with Sup720 3BXL or better for this job.
I tried to look at the c4500 configuration guide and in the QoS section there is no reference to MPLS frames and EXP.
However, if your only objective is to have the CoS bits to reflect the MPLS EXP bits this can be a default behaviour being the MPLS frame the payload.
ethernet header -- 802.1Q header -- MPLS header
802.1Q CoS should be a copy of MPLS EXP bits by default when it exits the PE interface.
Hope to help
Giuseppe

Is it possible to configure non-default NX7K CoS-DSCP map?

NX7K QoS has system defined table maps for CoS to DSCP mapping, DSCP to CoS mapping, etc. Those table maps can be used in qos policy maps. I was wondering if I can change, for example, CoS to DSCP mapping to something different from the default values.
Somthing similar to Catalyst switch command "mls qos map cos-dscp 0 10 18 24 34 46 48 56", where you can define any CoS to DSCP values. I don't think this is possible in NX7K QoS, but just curious.
Thanks
Gary

Hi Raymond,
Based on my research, we can use Group Policy and Internet Options to configure default mail client.
How to make Outlook the default mail client
http://support.microsoft.com/kb/223877/en-us
How to configure the default e-mail client using Group Policy
http://support.microsoft.com/kb/2008044
Best Regards,
Amy
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C2960: ingress priority-queue and CoS/DSCP mapping

I have read the C2960 manuals for a few times, but I don't seem to find an answer.
You can enable the priority queue on the ingress interface which has two available input queues for QoS-services.
What seems to be missing from the manuals is that how can I map/direct the traffic (CoS & DSCP values) to the priority queue?
I can map traffic to two other WRR (SRR) queues with command: "mls qos srr-queue input cos-map queue queue-id threshold threshold-id cos1...cos8", but there is nothing about the priority queue.
So is the CoS/DSCP values for the priority queue fixed or how/what traffic is directed to it?
Thanks,
Miska

What seems to be missing from the manuals is that how can I map/direct the traffic (CoS & DSCP values) to the priority queue?
A: By default, the priority queue is queue 2, and 10 percent of the bandwidth is allocated to it.
?For queue-id, the range is 1 to 2.
Map DSCP or CoS values to an ingress queue and to a threshold ID.
By default, DSCP values 0-39 and 48-63 are mapped to queue 1 and threshold 1. DSCP values 40-47 are mapped to queue 2 and threshold 1.
By default, CoS values 0-4, 6, and 7 are mapped to queue 1 and threshold 1. CoS value 5 is mapped to queue 2 and threshold 1.
?For queue-id, the range is 1 to 2.
?For threshold-id, the range is 1 to 3. The drop-threshold percentage for threshold 3 is predefined. It is set to the queue-full state.
?For dscp1...dscp8, enter up to eight values, and separate each value with a space. The range is 0 to 63.
?For cos1...cos8, enter up to eight values, and separate each value with a space. The range is 0 to 7.
What above is saying is queue 2 is priority queue, you can use the CoS/DSCP mapping to queue to move certain CoS?DSCP to either queue 1 or queue 2.
I can map traffic to two other WRR (SRR) queues with command: "mls qos srr-queue input cos-map queue queue-id threshold threshold-id cos1...cos8", but there is nothing about the priority queue.
So is the CoS/DSCP values for the priority queue fixed or how/what traffic is directed to it?
A; See above.
For more info:
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat2960/12225see/scg/swqos.htm#wp1161845
Please rate all posts.

Question about 3750 mls qos map dscp-output-q and cos-output-q

1. If a egress packet has both Cos and Dscp setting, which map should this packet used to put into queue?
2. The 3750 is doing ip route. After the packet is routed, will the packet keep the DSCP and COS? Or it will just keep the DSCP and using the dscp-cos map to create a new COS.

Apologies for the confusion with the terminalogy.
The question is where you have configured the trust boundaries, do you necessarily trust the DSCP value prior to being routed across your network?
Therefore, although you have explicity trusted the DSCP value, do you still trust the value at the remote peer.
For example, you connect into an MPLS with QoS enabled, you know that the values you are trusting are correct within your network, however at the remote peer/branch they could be remarked by the provider. Therefore do you 'believe' the values, or do you simply not trust them and then reclassify on ingress.
Regards
Allan.
Hope this makes sense..

Industry standard for CoS value mapped to DSCP EF?

Hey,
I was looking for some documents configuring HP switches to work with cisco phones and running QoS. I found somehow other vendors (HP and Juniper) are by defualt mapping DSCP 46 or EF to CoS 6. My memory servers that Cisco mapps EF or DSCP 46 to CoS 5.
I know the DSCP-COS mapping can be modified but which one is the standard really?
/S

If you looking for some industry standard documentation on QOS marking then you can refer IEEE 802.1P.. It is a mechanism for implementing QoS at the MAC level..
http://en.wikipedia.org/wiki/IEEE_P802.1p
But since you are working with Cisco Phones, they will mark RTP traffic at layer 2 (COS=5).. so i think you should configure your HP switch with cos value 5 for RTP traffic.. Hope this helps..
Piyush Jain

"trust cos" on dot1q-tunnel interface

Hello,
we've MAN based on Cat 6500 and Cat 3750, we're using QinQ as one of our backbone technologies.
We need to implement "trust cos" on QinQ port for one of our customers (= rewrite CoS bits from the internal 802.1q header (coming from customer) to the external 802.1q header). Do you have some idea how to deal with it ?
We've done several experiments, but we haven't found any solution except CoS-to-CoS map, which is "Cat 6500 only" and "per-group-of-ports" feature. We need to implement it per port (only for this cusomer).
We're looking for this because customer is using MPLS and we need to "trust QoS" as it is set by the customer. Customer is able to set
- DSCP in IP header
- MPLS exp. bits
- CoS in dot1q header.
Have you ever come accross something like this?
Have you found any solution?
Thanks
Jan Klicka, SITMP

It's difficult for Cisco Cat 6500.Why don't you consider products from other vendors?

Mls qos trust{cos/ip-precedence/dscp} command

Hi every body!
I have few questions
1)
The command " mls qos trust dscp" is only valid on mulilayer switch or it is also valid for layer 2 switch? If layer 2 switch is configured with that command, can it modify the dcsp value based on policy?
2)is the following correct:
switch(config-if) mls qos trust dscp
switch will set the cos value to set default. If the default set is zero, then frame will be processed by best-effort delivery.
But the egress-queue will be decided by dscp value in the packet. A dscp to cos map will be used to drive the cos value and then frame will be placed in the queue that corresponds to cos value.( off course if egress port is configured for trunk)
thanks a lot and I wish America and all of you a happy new year!
thanks a lot!

Sarah
1) L2 switches can trust the dscp marking as well. The 2960 is a layer 2 only switch and the default is untrusted but if you then enter
"mls qos trusted" you have a choice of 'cos|dscp|ip-precedence'. The default if no choice is entered is DSCP.
2) If "mls qos trust dscp" is entered then the switch will use the DSCP marking found in the packet. This will then be used as the internal DSCP marking that all switches use. Unless you have a DSCP-DSCP mutation map the value used will be the value received in the packet.
Jon

Restriction of project no. in travel exps.

Hi every one in my project we are implementing travel management. so all the travel exps are mapped through trip and pr05. now whenever employee is requesting for exps in list he can see all the WBS elements so employee can put the travel exps on any project.I m looking for some userexit through which employee should see only those project which is assigned to him/her.
With Regards
Abhishek Sinha
Idhasoft, India

thats why create a standard template for a project where the wbs for travel is fixed means.
the first few char will always keep on changing as per the new project code, but the last 1/2 digit will remain same for travel.
example...
project-1 travel is p.0001.01
project-2 travel is p.0002.01
here put the validation like below.
prerequisite
COBL-HKONT = xxxxxxxxxxxx
check
prps-posid : 6-7 : = '01'
eror
as per user defined
ashis

802.1p on 3750 ingress COS tag vs Egress COS tag

Greetings,
Hopefully someone will have some insight in to this.
I have a 3750 configured for switchports to trust the cos value recieved from the device it is connected to. When I run Ethereal, I am seeing the COS tags with a correct value that was assigned. What I am NOT seeing is egress traffic on the port retain or assign any value. What am I missing?? The switchport config is below.
interface GigabitEthernet1/0/3
switchport voice vlan dot1p
duplex full
mls qos trust cos
spanning-tree portfast
ip igmp max-groups 130

Thank you for the reply.
Currently I believe the source and destinations are within the same switch so no trunkports should be doing the COS rewrites. I have thought about the default DSCP-COS maps possibly rewriting the values but as you see in the QOS config (which is very basic) that should not be happening.
Here are the global QOS config.
mls qos
no mls qos rewrite ip dscp
Tonight I will be verifying that the VLAN ID assignment form the server matches the voice VLAN ID. Also I am going to ask my co-worker (server guy) to let the vlan assignments and COS tags come from the switch as opposed to the server.
I look forward to more input!
Thanks!
RA

Any one ever worked on 6500 series Cisco switches QOS or 6503 or 6524 QOS(Urgent help needed)

Hi All,
I am having issue specifally doing QOS configuration on 6503 or 6524 or 6509 switches. I am unable to match any EF(voice) traffic for eompls(vlan based) on 6503 cisco switch. If i use any other router as 2811 or 2821 my QOS configuration works perfect but if i put 6503 as PE2 it does not work.i am using vlan based eompls.
Below is the scenario & configuration which i am having issue.
CE1(2821 router)(dot1Q)--------->PE1(2821 router)------->P(6524 switch)-------->PE2(6503 switch)------->(dot1Q)(2821 switch)CE2.
On CE1 i can match ip-precedence 5 traffic and mark that traffic to cos5 on outbound port.On PE1 i can match cos5 packet and mark with mpls exp top5 on inbound port, on outbound port i can match mpls exp 5.
On PE2(6503) i am unable to match that mpls exp5 packet on inbound port. none of the configuration worked on 6500 series switches with mls qos, ,mls qos trust dscp,mls qos trust cos etc. Although i can match cos5 traffic on CE2 on inbound interface.i can not match mpls exp 5 traffic on 6503 and all i can see traffic as default-class on 6503 switch. I tried many things and many configurations on 6503 but nothing worked.If i put 2821 router as PE2 instead of 6503 my qos configuration works. but why if i put 6503 my same qos configuration does not work?
---match means=classification or classify
Can anyone tell me how qos works on 6500 series switches or where i am having issue in my scenario.
i am using this ios on 6503: s72033-advipservicesk9_wan-mz.122-33.SXI3.bin.
below r my questions for 6503 qos:
1.do i need to use some other map tables,am i using correct map tables on 6503 as cos-dscp,dscp-cos,exp-dscp etc.
2.any other configutaion of qos needed on 6503?
3.i am unable to match anything on outbound port of 6503.
4.on 6503 i am using sup720 and PFC3BXL.any specific configuration needed for PFC3bxl.
5. 6503 not allowing me to match qos-group on inbound interface, not allowing me to set cos5 on outbound interface. not allowing me to set cos5 as an inbound interface.
CE1(2821) config:
class-map match-any EF
match ip precedence 5
class-map match-any data
match ip precedence 3
policy-map ip2mpls
class EF
set cos 5
class data
set cos 3
interface FastEthernet0/0
no ip address
duplex auto
speed auto
interface FastEthernet0/0.455
encapsulation dot1Q 455
ip address 172.16.15.1 255.255.255.252
service-policy output EF
PE1(2821) config:
mls qos map cos-dscp 0 8 16 24 32 40 48 56
class-map match-all exp_3
match mpls experimental topmost 3
class-map match-all mpls_exp
match mpls experimental topmost 5
class-map match-any cos3
match cos 3
class-map match-any LOO1
match cos 5
policy-map EF
class LOO1
set mpls experimental imposition 5
class cos3
set mpls experimental imposition 3
policy-map QOS_G_5
class mpls_exp
priority
class exp_3
bandwidth 500
interface Loopback0
ip address 3.3.3.3 255.255.255.255
interface FastEthernet0/0
ip address 192.168.23.2 255.255.255.0
ip ospf network point-to-point
duplex auto
speed auto
mpls ip
service-policy output QOS_G_5
interface FastEthernet0/1.455
encapsulation dot1Q 455
xconnect 5.5.5.5 455 encapsulation mpls
service-policy input EF
PE2(6503 qos):
R1#show module
Mod Ports Card Type Model Serial No.
1 4 CEF720 4 port 10-Gigabit Ethernet WS-X6704-10GE SAL09401U2L
2 48 CEF720 48 port 10/100/1000mb Ethernet WS-X6748-GE-TX SAL114247YN
3 16 16 port 1000mb GBIC ethernet WS-X6416-GBIC SAL0712AM69
4 24 CEF720 24 port 1000mb SFP WS-X6724-SFP SAL10019J4N
5 2 Supervisor Engine 720 (Hot) WS-SUP720-3BXL SAD102805VM
6 2 Supervisor Engine 720 (Active) WS-SUP720-BASE SAD0846060F
Mod Sub-Module Model Serial Hw Status
1 Distributed Forwarding Card WS-F6700-DFC3BXL SAD102504EF 5.3 Ok
2 Centralized Forwarding Card WS-F6700-CFC SAD111300PD 3.1 Ok
4 Centralized Forwarding Card WS-F6700-CFC SAL1004BQ2A 2.0 Ok
5 Policy Feature Card 3 WS-F6K-PFC3BXL SAD10270189 1.8 Ok
5 MSFC3 Daughterboard WS-SUP720 SAD102801G5 2.5 Ok
6 Policy Feature Card 3 WS-F6K-PFC3BXL SAL1415FE95 1.11 Ok
6 MSFC3 Daughterboard WS-SUP720 SAD08440794 2.4 Ok
R1#show mls qos maps
Normal Burst Policed-dscp map: (dscp= d1d2)
d1 : d2 0 1 2 3 4 5 6 7 8 9
0 : 01 01 02 03 04 05 06 07 08 09
1 : 10 11 12 13 14 15 16 17 18 19
2 : 20 21 22 23 24 25 26 27 28 29
3 : 30 31 32 33 34 35 36 37 38 39
4 : 40 41 42 43 44 45 01 47 48 49
5 : 50 51 52 53 54 55 56 57 58 59
6 : 60 61 62 63
Maximum Burst Policed-dscp map: (dscp= d1d2)
d1 : d2 0 1 2 3 4 5 6 7 8 9
0 : 00 01 02 03 04 05 06 07 08 09
1 : 10 11 12 13 14 15 16 17 18 19
2 : 20 21 22 23 24 25 26 27 28 29
3 : 30 31 32 33 34 35 36 37 38 39
4 : 40 41 42 43 44 45 46 47 48 49
5 : 50 51 52 53 54 55 56 57 58 59
6 : 60 61 62 63
Dscp-cos map: (dscp= d1d2)
d1 : d2 0 1 2 3 4 5 6 7 8 9
0 : 00 00 00 00 00 00 00 00 01 01
1 : 01 01 01 01 01 01 02 02 02 02
2 : 02 02 02 02 03 03 03 03 03 03
3 : 03 03 04 04 04 04 04 04 04 04
4 : 05 05 05 05 05 05 05 05 06 06
5 : 06 06 06 06 06 06 07 07 07 07
6 : 07 07 07 07
Dscp-exp map: (dscp= d1d2)
d1 : d2 0 1 2 3 4 5 6 7 8 9
0 : 00 00 00 00 00 00 00 00 01 01
1 : 01 01 01 01 01 01 02 02 02 02
2 : 02 02 02 02 03 03 03 03 03 03
3 : 03 03 04 04 04 04 04 04 04 04
4 : 05 05 05 05 05 05 05 05 06 06
5 : 06 06 06 06 06 06 07 07 07 07
6 : 07 07 07 07
Cos-dscp map:
cos: 0 1 2 3 4 5 6 7
dscp: 0 10 18 24 34 46 48 56
IpPrecedence-dscp map:
ipprec: 0 1 2 3 4 5 6 7
dscp: 0 8 16 24 32 40 48 56
Exp-dscp map:
exp: 0 1 2 3 4 5 6 7
dscp: 0 8 16 24 32 40 48 56
mls netflow interface
mls qos map cos-dscp 0 10 18 24 34 46 48 56
mls qos
class-map match-all exp_3
match mpls experimental topmost 3
class-map match-all EXP_5
match mpls experimental topmost 5
class-map match-all QOS_GROUP_5
match qos-group 5
class-map match-all prec5
match ip precedence 5
class-map match-all cos5
match cos 5
policy-map mpls2ip
class QOS_GROUP_5
set cos 5
policy-map IN_FROM_R3
class EXP_5
set qos-group 5
interface Loopback0
ip address 5.5.5.5 255.255.255.255
interface GigabitEthernet2/2
mls qos trust cos
or <------------ (tried both individually but none worked)
mls qos trust dscp
interface GigabitEthernet2/2.455
encapsulation dot1Q 455
xconnect 3.3.3.3 455 encapsulation mpls
service-policy output mpls2ip
interface GigabitEthernet2/1
ip address 192.168.34.4 255.255.255.0
ip ospf network point-to-point
mls qos trust cos
or <------------ (tried both individually but none worked)
mls qos trust dscp
mpls ip
service-policy input IN_FROM_R4
Thanks & regards,
Ahsan Rasheed

Hi All,.
I am still having issue on 6503 or 6524 Cisco Switch.
" Can any one give me any sample of 6524 or 6503 QOS working configuration, i would be really thankful "
As i have mentioned in my prevoius post of configuration of 6503. I am unable to match mpls exp 5 packet on 6503. My qos configuration on PE1(2811 router) is working perfectly. I am unable to classify mpls ex5 or mpls exp3 on 6503 switch. Am i missing something on configuration?
PE2 config:"6503 switch"
class-map match-all mpls_exp
match mpls experimental topmost 5
policy-map EF
class mpls_exp
R!#mls qos
int Gi2/4
service-policy input EF
mls qos trust cos
dscp: 0 10 18 24 34 46 48 56
Exp-dscp map:
exp: 0 1 2 3 4 5 6 7
dscp: 0 10 18 24 34 46 48 56
Thanks,
Ahsan Rasheed

EXP-COS mapping on 3750M

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