Good morning, > Am 19.09.2016 um 09:52 schrieb Peter Rathlev <pe...@rathlev.dk>: > > On Sat, 2016-09-17 at 14:24 +0200, Łukasz Bromirski wrote: >>> On 16 Sep 2016, at 17:32, Nick Cutting wrote: >>> Depends on supervisor - With sup 2t - you could reuse vlans on >>> subinterfaces, here is 2 subinterfaces on different ports, and an >>> SVI all on vlan 281 >>> >>> ! >>> interface Vlan281 >>> no ip address >>> shutdown >>> end >>> ! >>> interface TenGigabitEthernet2/5/9.281 >>> encapsulation dot1Q 281 >>> end >>> ! >>> interface TenGigabitEthernet2/5/8.281 >>> encapsulation dot1Q 281 >>> end >> >> That’s actually config that will work with all Supervisors, wrong >> example :) > > Nick is right, the config he showed would not work on Sup720 or > earlier. And it wouldn't matter if VTP was enabled or not. If the VLAN > exists "switched" then the first "encapsulation dot1q" command will be > rejected with "Command rejected: VLAN <N> already in use by interface > Vlan<N>". Trying to create more than two subinterfaces using the same > VLAN (on different interfaces of course) is rejected with "Command > rejected: VLAN <N> not available".
Correct. My problem is that I have a new peering partner and his VLANs are already in use on my side. On the "toy" platforms like 1812 or a FreeBSD or Linux host it's straightforward to just create a subinterface with the appropriate tags attached to the packets. So I thought I could do the same on my Cat6500. I just found out about VLAN mapping: http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12-2SX/configuration/guide/book/vlans.html#wp1044990 This *would* do the trick for me, if it wasn't for the fact that the mapping is applied to all 12 ports in a port group. And since the VLAN is in use there are of course ports where I don't want to map it ... *argh* Can't they implement a single advanced feature in an unsurprising manner? Thanks for all your help Patrick -- punkt.de GmbH * Kaiserallee 13a * 76133 Karlsruhe Tel. 0721 9109 0 * Fax 0721 9109 100 i...@punkt.de http://www.punkt.de Gf: Jürgen Egeling AG Mannheim 108285 _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/