[c-nsp] dot1q subinterfaces on cisco 1721 with MPC860P part# 0

[Ed Ravin]

I just ran into a Cisco 1721 that wouldn't accept VLAN commands -
as described below in an October 2004 post, it appears to be hardware
trouble.  The messages in the archives didn't indicate what the final
resolution was - does the hardware have to be exchanged with Cisco
before VLANs will work?

	-- Ed

dpeng at cisco.com wrote back in October 2004:
> I'm having our hardware platform team look into this issue. Our code
> requires that a MPC860P part number 5 be present in order to enable
> dot1q. I don't know why or how you got a 1721 with a MPC860P part
> number 0. So I'm investigating. You have a serial number for both? If
> so, please send it to me. Thanks.
> 
> Dennis
> 
> Sorin CONSTANTINESCU [consta at gmail.com] wrote:
> > Hi,
> > 
> > I have a cisco 1721 that doesn't let me set the encapsulation for
> > fastethernet subinterfaces. I tried several IOS images using Feature
> > Navigator, but no results.
> > 
> > I took the image running on another 1721, loaded it into the one with
> > the problem, but it still didn't work.
> > 
> > === cut here ===
> > Router#conf t
> > Enter configuration commands, one per line.  End with CNTL/Z.
> > Router(config)#int f0.1
> > Router(config-subif)#enc?
> > encapsulation  
> > 
> > Router(config-subif)#enc dot1q 1
> >                          ^
> > % Invalid input detected at '^' marker.
> > 
> > Router(config-subif)#end
> > Router#
> > === and here ===