Layer3 vs SVI

[Johnson_Mo]

team,

I have CAT 9300 set up with ISR 4331. I have  it connected via DIY "Diode connection." when I assign vlan 11 with ip 10.10.10.1/ as switch port access vlan 11 to the uplink interface of the 9300, traffic wont pass to 433. when I assign the ip directly to the interface, Mcast passes with no issue. any idea why? 

thanks in advance 

[MHM Cisco World]

You face issue with only mcast ?

Or mcast and unicast ?

[Johnson_Mo]

thanks for replying!

the issue is both. 

[Johnson_Mo]

the issue is that when I assign vlan 11 to the uplink if 9300, the interface does not pass anything, but when I convert it to layer3 with IP of vlan 11, it works fine. 

[MHM Cisco World]

Can i see the config of ISR interface 

[Johnson_Mo]

int tengi 1/1/1

switchport access vlan 11

switchport mode access 

[MHM Cisco World]

Not switch interface but isr router interface

MHM

[Johnson_Mo]

interface gig 0/0/0

ip add 10.10.10.2 25.255.255.0 

ip pim dense-mode 

no negotiation auto 

[MHM Cisco World]

Nothing wrong until now 

Show vlan 

Check if vlan appear 

Show ip interface breif 

Check if the vlan SVI is up/up

MHM

[Johnson_Mo]

vlan is shown and the SVI is up/up

I think it is IOS issue. I am using 17.9.3 now. when I switch to 16, it works fine. 

[MHM Cisco World]

Show interface | include line | address

Check if mac of this vlan is same for othet vlan

MHM

[Johnson_Mo]

is not the same as other MAC addresses