Jared Mauch wrote: > On Tue, May 15, 2007 at 05:52:21PM +0200, [EMAIL PROTECTED] wrote: > >> Running 12.2.18SXF8 on sup720-3b/6506 >> >> Router(config)#int gi1/1 >> Router(config-if)#no switchport >> Router(config-if)#int gi1/1.1 >> Router(config-subif)#encapsulation isl 1 >> Command rejected: VLAN 1 cannot be allocated because it is a default VLAN >> Router(config-subif)#encapsulation dot1Q 1 native >> Command rejected: VLAN 1 cannot be allocated because it is a default VLAN >> >> However this was working like a charm on older IOS versions, or onto other >> platforms, so is it a platform limitation ? Is it due to 12.2.18SXF8 ? >> Should I >> consider a change towards SXD train ? I am heritating of this design and >> need to >> route all my .1 subinterfaces, without renumbering them if possible. >> > > There is only one 'vlan1' > > if you have vlan1 on more than one interface (eg: gig1/1 and gig1/2) > they are actually the same vlan. This device is a switch, not an > independent router. > You should be able to 'no shut' the vlan1 interface and use that > instead and leave the port as a trunk. vlan1 has been generally > 'pseudo-reserved' on cisco for as long as I can remember. I suspect > that it was working some other way was some odd artifact of the code that > they've since closed to prevent unexpected operation. > > - Jared > >
For info, the platform onto which it was working was a totally different one i.e. Cisco 8540CSR with 2port GE modules. This was accepting to have multiple vlan 1 routed subinterfaces, as well as multiple vlan x routed subinterfaces . Probably the odd code artefact you are referring to ! _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
