[c-nsp] Turning off vtp multicasts

[Bob Tinkelman]

I have a WS-C3550-12G running c3550-i5k2l2q3-mz.121-20.EA1.bin.
(Yes, I know; that's a bit stale, but the switch has been up and
running for over 16 months.)

We are trying to connect one of its ports to a peering switch.
The engineer managing the peering switch has complained to us
that our switch is emitting vtp multicasts.

An example is included at the end of this email.  

We want to continue running vtp on this router but, to comply
with this request, would like to surpress any vtp multicasts on
this particular port. 

I reached the point where I was just changing various config
options (not quite at random) hoping to find one that would make
a difference.  At the moment, the config looks like this:

  | switch1.nycmnycz#sho run int g0/1
  | Building configuration...
  | 
  | Current configuration : 265 bytes
  | !
  | interface GigabitEthernet0/1
  |  description nyiix
  |  switchport access vlan 101
  |  switchport mode access
  |  switchport block multicast
  |  no cdp enable
  |  spanning-tree portfast
  |  spanning-tree bpdufilter enable
  |  spanning-tree bpduguard enable
  |  spanning-tree guard none
  | end


Any suggestions or pointers to appropriate documentation would
be much appreciated.
--
Bob Tinkelman <bob at tink.com>
ISPnet, Inc.    718.464.4747



=========problem-packet=====================================================

SW-NYIIX2#RX-JC-FORMAT filter[1] 181-23:01:34 (03241800)
00: 2cac 0f8f 5010 0001-0000 0000 f773 000c  FID     = 2cac
10: 0100 0ccc cccc 0009-442f 6581 0060 aaaa  Offset  = 10
20: 0300 000c 0111 2101-114a 0001 000f 4348  VLAN    = 1(0001)
30: 4b30 3631 3856 3053-4e00 0200 0947 6930  CAM     = 0(00000,00000*2)
Pri CPU MON PriTag MVID PType US BRD DAV SAV DPV SV ER TXA SAS Tag SRC Size
0   0   0   0      0    f     0  1   0   1   0   0  0  0   0   0   1/1   110

=========problem-packet=====================================================