В документации по cisco3550 написанно:
Supported VLANs
The Catalyst 3550 switch supports 1005 VLANs in VTP client, server,
and transparent modes. VLANs are identified with a number from 1 to
4094. VLAN IDs 1002 through 1005 are reserved for Token Ring and FDDI
VLANs. VTP only learns normal-range VLANs, with VLAN IDs 1 to 1005;
VLAN IDs greater than 1005 are extended-range VLANs and are not stored
in the VLAN database. The switch must be in VTP transparent mode when
you create VLAN IDs from 1006 to 4094.
VTP "выбрасываем" сразу (т.е. ставим vtp mode transparent) и у нас появляется возможность использовать VLAN IDs from 1-1000, 1006 - 4094 (Extended-Range VLAN), но это не значит что я могу поднимать все 4094 vlan'а на 3550, реально все равно можно держать только 1000 ?
p.s.
#sh vtp status
VTP Version : 2
Configuration Revision : 0
Maximum VLANs supported locally : 1005
Number of existing VLANs : 1005
VTP Operating Mode : Transparent
VTP Domain Name :
VTP Pruning Mode : Disabled
VTP V2 Mode : Disabled
VTP Traps Generation : Disabled
MD5 digest : 0x59 0x0F 0x0C 0x93 0x68 0xEF 0x06 0xA7
(config)#vlan 1008
(config-vlan)#exit
Proposed configuration has too many VLANs for this platform. Reduce the number of VLANs proposed.
Error exiting config-vlan mode 2: Illegal input