We are using VRF-Lite and BGP on a customer router, and trunking to a customer switch internally. We are seeing a very large routing table (in excess of 200k routes).
We are seeing an error message:
TAGCON-3-LCLTAG_ALLOC : Cannot allocate local tag
Which I understand is usually only seen when running MPLS, which we are not.
Even stranger, it is resolved by the 'tag-switching tag-range downstream 16 100000 0' (now deprecated).
I notice that the output of 'show tag-switching forwarding-table ..' shows each route being allocated an internal tag.
Can anyone explain why these tags are being assigned?