12-13-2007 06:07 AM - edited 03-03-2019 07:55 PM
Hi all,
i've got some questions about QnQ:
1 command 'set dot1q-all-tagged enable' do you think can create disruption in traffic?
2 is jumbo frames enough 1504 Bytes?
3 how can i assign a VLAN to a tunnel?
i'll add a attachment for clarify situation, vlan 2-3-4-5-6 must not see other vlan on switch A-B-C-D and switch A-B-C-D must see each other VLAN 9-10-11-12.
can i transport also vlan 8-9-10-11 in dot1q mode (i need those VLAN in devices A-B-C-D) or i need to encapsulate in Q-inQ? Link intra switches (trunk all) needs sono change (jumbo frames)? if link 1 died is trunk all able to transpost all the stuffs?
Thanks a lot for an answer, and thanks anyway for attention :)
Dan
12-15-2007 10:46 AM
1-I have not tested this, but I think good chance it might be disruptive ( because of transition to tagging all frames).
2-some platforms supports 9216Bytes.
3- 50 Outer VLAN, 10& 20 InnerVLANs
Router# configure t
Router(config)# interface gigabitethernet3/0.10
Router(config-subif)# encapsulation dot1q 50 second-dot1q 10
Router(config)# interface gigabitethernet3/0.20
Router(config-subif)# encapsulation dot1q 50 second-dot1q 20
Vlan10& 20 will not be seen on A-B-C-D.
Vlan 50 is then treated as a normal VLAN u can trunk over Link1 and Link2. U obviously need to enable SPT/RSPT. redundancy will take care of itself here. If u want a higher response use RSTP.
HTH
Sam
12-16-2007 12:26 AM
THX very much....also in CatOS i can do same thing?
How do i have t treath native VLAN?
have nice day
Das
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