Why does the CISCO switch shine its poppy in all VLANs?

Question

Computer networks

On a cisco on a trunk port:

interface GigabitEthernet1/0/1
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 1,20,100,616
 switchport mode trunk
!
interface Vlan1
 ip address 192.168.0.126 255.255.255.0

On the upstream switch:

sh mac-address-table int et 1/9 
Read mac address table....
Vlan Mac Address                 Type    Creator   Ports
---- --------------------------- ------- -------------------------------------
1    ec-30-91-64-44-01           DYNAMIC Hardware Ethernet1/9
1    ec-30-91-64-44-40           DYNAMIC Hardware Ethernet1/9
20   74-83-c2-90-77-9d           DYNAMIC Hardware Ethernet1/9
20   74-83-c2-90-77-a2           DYNAMIC Hardware Ethernet1/9
20   74-83-c2-90-77-c0           DYNAMIC Hardware Ethernet1/9
20   ec-30-91-64-44-01           DYNAMIC Hardware Ethernet1/9
100  58-d9-d5-b6-c5-30           DYNAMIC Hardware Ethernet1/9
100  ec-30-91-64-44-01           DYNAMIC Hardware Ethernet1/9
616  d8-4c-90-30-59-40           DYNAMIC Hardware Ethernet1/9
616  ec-30-91-64-44-01           DYNAMIC Hardware Ethernet1/9

cisca poppy ec-30-91-64-44-01

Why do I see a cisca poppy in all vlans, if its IP address is registered specifically only in the first vlan?

With other switches (D-Link, SNR) this is not the case.

I don't know how to google, so I decided to ask here.

Answer 1

PVSTP.

Answer 2

that that you registered an aypishnik to poppy table does not concern
aypishnik in any way look for the table of poppies in arp to the table the
table of poppies is under construction the own for each vlan. vlans provide the necessary insulation.
therefore, it makes no sense to assign different poppies to one physical interface in different vlans,
although many manufacturers do this