xconnect precednce

mkhalil10 · ‎09-19-2015

Hi all
I am trying to test different tos values between CEs 
What
 am trying to test is default traffic which will fall into the routine 
traffic and another flow which should fall in the critical traffic 
(tos=160) 
 
My access-list looks as below
 
 
access-list 105 permit ip any any precedence routine log
 
access-list 105 permit ip any any precedence priority log
 
access-list 105 permit ip any any precedence immediate log
 
access-list 105 permit ip any any precedence flash log
 
access-list 105 permit ip any any precedence flash-override
log
 
access-list 105 permit ip any any precedence critical log
 
access-list 105 permit ip any any precedence internet log
 
access-list 105 permit ip any any precedence network log
 
access-list 105 permit ip any any
 
 
 
 
interface GigabitEthernet0/1.56
ip access-group 105 in
ip access-group 105 out
 
ping 10.3.3.1 repeat 19 tos 160 
ping 10.3.3.1 repeat 15

Probe#sh ip access-lists 105           
 
Extended IP access list 105
    10 permit ip any any precedence routine log (34 matches)     
    20 permit ip any any precedence prioritylog
    30 permit ip any any precedence immediatelog
    40 permit ip any any precedence flash log
    50 permit ip any any precedence flash-override log
    60 permit ip any any precedence critical log
    70 permit ip any any precedence internet log
    80 permit ip any any precedence network log
    90 permit ip any any

The 19 ICMP packets should fall into the critical 
I have tested this on GNS3 and it worked fine !
Is there something global should be enabled on the PE which is 7606? 
 
BR,
Mohammad

Vinit Jain · ‎09-21-2015

Hello Mohammad

From your setup, is there any QoS settings on the PE for treating the various TOS bits that you are setting. Could you please share the packet details received on the remote CE router. If its a Cisco IOS software, you can use EPC to perform a packet capture to see the packet.

On GNS3, have you tested the pings between the directly connected router or across the l2vpn setup?

Regards

Vinit

Thanks
--Vinit

mkhalil10 · ‎09-22-2015

Hi Vinit

Thanks for the kind reply

When I have tested this on GNS3 , it was across the L2VPN and it worked fine (I have used routers 3725) so I do not think there was any issue

By live setup is : my CE is 6509 and my PE is 7606

No special QoS configuration present on both

I have tried to configured mls qos trust dscp and mls qos trust extend on the CE with no luck

BR,

Mohammad

k_jackson · ‎09-22-2015

Can you share the config of PE router

Vinit Jain · ‎09-22-2015

Could you please share the below output from the 7600 PE:

- show version

- show module

- show run

- What is the Core facing module and CE facing module

I think you will have to implement QoS policy to set experimental bits to xfer marked packets across L2VPN. L2VPN and QOS on 6500/7600 are platform dependent features and thus the configs differ with what you test in GNS3 and in live production devices like 7600.

Once I have the above information, i can share some inputs on what configuration can be applied on 7600.

Regards

Vinit

Thanks
--Vinit

mkhalil10 · ‎09-28-2015

CE
1 48 48 port 10/100 mb RJ45 WS-X6348-RJ-45 SAL04430E1H

PE
1 48 CEF720 48 port 10/100/1000mb Ethernet WS-X6748-GE-TX SAL13442U2W

version
bootdisk:c7600rsp72043-advipservicesk9-mz.122-33.SRE12.bin

PE#sh run | inc mls
mls flow ip interface-full
no mls flow ipv6
mls qos
no mls acl tcam share-global
mls cef error action reset

From the PE side
Vlan 56
Interface G1/13
Switchport mode access
Switchport access vlan 56

Interface vlan 56
Xconnect x.x.x.x 56 encapsulation mpls

From the CE side
Interface f1/13
Ip address 10.3.3.2 255.255.255.0