03-30-2009 11:46 PM - edited 03-06-2019 04:55 AM
Hi everybody,
Is there any way to limit number of C(ustomer)-VLANs on QinQ tunnel port?
For example, only VLANS 10-20 are double tagged, all other traffic is dropped.
Thanks,
Branimir
Solved! Go to Solution.
03-31-2009 01:58 AM
Hello Branimir,
as far as I know this is not possible: you cannot choice what vlan-ids have to be tunneled and what should be filtered/stopped.
all vlan-tags presented to the dot1q tunnel interface are externally tagged with the service provider tag for this customer.
This is for forwarding efficiency.
see for example this chapter from config guide of C3750
Hope to help
Giuseppe
03-31-2009 01:58 AM
Hello Branimir,
as far as I know this is not possible: you cannot choice what vlan-ids have to be tunneled and what should be filtered/stopped.
all vlan-tags presented to the dot1q tunnel interface are externally tagged with the service provider tag for this customer.
This is for forwarding efficiency.
see for example this chapter from config guide of C3750
Hope to help
Giuseppe
03-31-2009 02:00 AM
Hi Giuseppe,
Thank you for the information.
Regards,
Branimir
03-31-2009 02:08 AM
HI Branimir, [Pls RATE if HELPS]
Please let us know the requirement in detail.
Let us assume the Setup as:
BaseStation Switch==>Tunneling Switch ==> Core Switch ==> Edge RouterA.
Configuration for the QnQ Tag Interface at Tunneling Switch:
interface FastEthernet0/20
description For Edge RouterA
switchport access vlan 900
switchport mode dot1q-tunnel
speed 100
duplex full
no cdp enable
spanning-tree portfast trunk
spanning-tree bpdufilter enable
end
Note: VLAN 900 is the QnQ Tag VLAN ID.
BaseStation Switch <
If the C(ustomer) VLANS eg: 30-40 are not allowed in the X-connected Interface towards the Tunneling Switch means; the VLANS are not Tagged and hence it is dropped.
Pls RATE if HELPS
Best Regards,
Guru Prasad R
03-31-2009 02:12 AM
Hi,
If i understood correctly, you are saying that i need to configure trunk port on BaseStation Switch with switchport allowed vlan 30-40.
Unfortunately BaseStation switch is not under my administration.
03-31-2009 10:43 AM
HI branimirturk, [Pls RATE if HELPS]
If you do not want VLAN Range 30 - 40 on QnQ path;
Don't allow VLAN 30 - 40 in the BaseStation Switch <
Hope I am Informative.
Best Regards,
Guru Prasad R
03-31-2009 11:26 PM
Hi,
Thank you,
Branimir
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