Certain VLAN doesn't work on L2 SWI

[Robo.Srobo]

Hi guys!

I have a problem. Between ours l2 switch (SG-350) and L3 switch (C9300-48S) does not work certain VLAN. Every VLANs works, but just one no. We have had some problem yestaerday with our port channel between these switches, when my coworker put different cable from another L2 SWI to L3 SWI. Then when he has put correct cable (where on opposite site was configurated port channel) something has gone wrong so we had to reconfigured our L2 switch and port channel deleted. Otherwise, now that VLAN on trunk ports L2/L3 not working.

L3 config of the port:

interface GigabitEthernet1/0/4
description SW_Chirurgia-riadiaca_cast - PORT CHANNEL 5 !!!
switchport trunk allowed vlan 1,10,121,220,410,420,430,510,529,888
switchport mode trunk
end

L2 config of the port:

interface GigabitEthernet28
description CONNECT-TO-SWI001
switchport mode trunk
switchport trunk allowed vlan 1,10,121,220,410,420,430,510,529,888
!

Access port that VLAN:

interface GigabitEthernet15
switchport access vlan 510
!

VLAN 510 doesn;t working. I have tried shutdown the access port, change to trunk and back, associated to another VLAN. On the trunk ports of both switches I have delted the 510 VLAN and change back, but nothing helped.

Do you have any idea where is problem?

Thanks.

[ammahend]

on the g15 try this.

interface GigabitEthernet15

switchport mode access
switchport access vlan 510

[Robo.Srobo]

I did it. It did not help.

[balaji.bandi]

VLAN 510 doesn;t working

you mentioned it was working, due to some reason of cable mess up it stopped working, is this correct ?

what is in your terms not working ? end device not able to ping VLAN 510 Layer3 IP address ?

first I would check,on both the switches : is the vlan 510 exist

show vlan

show spann vlan 510

show IP interface brief 

show IP arp

show interface trunk

[Robo.Srobo]

Hi.

Yes, after that messed up with cable, we have had problem with native VLAN too, but my coworker did repair it. We have Native VLAN on 888 and then cdp notification was about Native mismatch and some end devices in VLAN 1 did not work. When he changed Native VLAN from 888 to 1, connections on VLAN 1 began work. After that everything is fine except the VLAN 501

Correct. The end device in VLAN 510 cannot ping his GW. From L2 SWI I can ping GW of VLAN 510.

[balaji.bandi]

is it 501 or 510 ?

as i have asked before you need to check and post information requested, since we do not see what you see on the device and your network how the setup done or messed up.

show vlan

show spann vlan 510

show IP interface brief

show IP arp

show interface trunk

[Robo.Srobo]

It is 510, sorry.

L3 SWI:

SWI001#show ip interface brief

Vlan510 10.74.0.1 YES manual up up

SWI001#show vlan
510 Chirurgia active

SWI001#show spanning-tree vlan 510

MST1
Spanning tree enabled protocol mstp
Root ID Priority 8193
Address 0476.b0c3.6e80
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 8193 (priority 8192 sys-id-ext 1)
Address 0476.b0c3.6e80
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Gi1/0/4 Desg FWD 20000 128.4 P2p
Gi1/0/16 Desg FWD 20000 128.16 P2p
Gi1/0/21 Desg FWD 20000 128.21 P2p
Te1/1/1 Desg FWD 2000 128.53 P2p
Te1/1/2 Desg FWD 2000 128.54 P2p
Te2/1/1 Desg FWD 2000 128.149 P2p
Te2/1/2 Desg FWD 2000 128.150 P2p

SWI001#show ip arp

IP of end user device is doesn't included. And MAC too of course

SWI001#show interfaces trunk

Gi1/0/4 1,10,121,220,410,420,430,510,529,888

L2 SWI:

SWI020#sh vlan
510 Chirurgia gi22-28,Po1 gi15 S
SWI020#sh spanning-tree vlan 510
Vlan information is avaliable only in PVST / Rapid-PVST mode
I'm using RSTP on the switch.

SWI020#sh arp GigabitEthernet15 - interface of end device

nothing

SWI020#show interfaces switchport GigabitEthernet28  - port connected to L3 switch

S-VLAN Ethernet Type: 0x8100 (802.1q)
VLAN Mapping Tunnel L2 protocols Global CoS: 5
Name: gi28
Switchport: enable
Administrative Mode: trunk
Operational Mode: up
Access Mode VLAN: 1
Access Multicast TV VLAN: none
Trunking Native Mode VLAN: 1
Trunking VLANs: 1,10,121,220,410,420,430,510,529,888
General PVID: 1
General VLANs: none
General Egress Tagged VLANs: none
General Forbidden VLANs: none
General Ingress Filtering: enabled
General Acceptable Frame Type: all
General GVRP status: disabled
Customer Mode VLAN: none
Customer Multicast TV VLANs: none
Private-vlan promiscuous-association primary VLAN: none
Private-vlan promiscuous-association Secondary VLANs: none
Private-vlan host-association primary VLAN: none
Private-vlan host-association Secondary VLAN: none