Hi,
We are designed a new service based on a FTTH indirect access. Our provider delivers each connection using QinQ. There are two connections types: best efford and gold. In gold connections we need mark packets with a CoS=3 in both tags. We are using a c7200-NPE-G2 with IOS c7200p-ipbasek9-mz.152-4.S7.bin that supports QinQ termination feature.
Our configuration is:
policy-map GOLD-policy
class class-default
set cos 3
!
interface GigabitEthernet0/1.4
encapsulation dot1Q 1020 second-dot1q 5
pppoe enable group global
service-policy output GOLD-policy
!
The issue is that only external tag is marked with CoS=3.
We have study Cisco IOS and we have found that IOS c7200p-ipbasek9-mz.152-4.M11.bin have a command: set cos-inner. So we have tried the following policy:
policy-map GOLD-policy
class class-default
set cos 3
set cos-inner 3
!
Tests shown that cos-inned has preference over set cos but always marks the most external tag (no inner). I suppose that plataform c7200p-NPG2 is not able to do this double mark.
We have done more tests. We are using pppoE and there is a way to mark PPPoE and PPP control packets with the command control-packets vlan cos 3:
bba-group pppoe global
virtual-template 1
ac name TEST
control-packets vlan cos 3
!
With this configuration (without set cos-inner and with contro-packet vlan cos+ set cos) control PPP packets are double marked (boths tags).
PPP sessions are established but there is no data traffic.
The issue is that data PPP packets (ICMP, HTTP) are not marked. We have tested a policy map in template interface to mark COS but it doen’t work.
Any ideas?.
Thanks
