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Two switches don't send traffic to each other
I have two N1500 series switches, one is 24 port and the second is 48 port
I have a couple VLANs configured on the switches. They have been able to talk through the VLAN 215 on my switches.
I recently tried to add VLANs 36, and 236 to make so that I could send traffic through them, but I can't send traffic back and forth on the new VLANs. Can anyone give some advice to help what all do you want to see to better understand
Vlan 215
SW1
int-sw1#show interfaces switchport gi1/0/25
Port: Gi1/0/25
VLAN Membership Mode: Access Mode
Access Mode VLAN: 215
General Mode PVID: 1 (default)
General Mode Ingress Filtering: Enabled
General Mode Acceptable Frame Type: Admit All
General Mode Dynamically Added VLANs:
General Mode Untagged VLANs: 1
General Mode Tagged VLANs:
General Mode Forbidden VLANs:
Trunking Mode Native VLAN: 1 (default)
Trunking Mode Native VLAN Tagging: Disabled
Trunking Mode VLANs Enabled: All
Private VLAN Host Association: none
Private VLAN Mapping:
Private VLAN Operational Bindings:
Default Priority: 0
Protected: Disabled
SW2
int-sw2#show interfaces switchport gigabitethernet1/0/5
Port: Gi1/0/5
VLAN Membership Mode: Access Mode
Access Mode VLAN: 215
General Mode PVID: 1 (default)
General Mode Ingress Filtering: Enabled
General Mode Acceptable Frame Type: Admit All
General Mode Dynamically Added VLANs:
General Mode Untagged VLANs: 1
General Mode Tagged VLANs:
General Mode Forbidden VLANs:
Trunking Mode Native VLAN: 1 (default)
Trunking Mode Native VLAN Tagging: Disabled
Trunking Mode VLANs Enabled: All
Private VLAN Host Association: none
Private VLAN Mapping:
Private VLAN Operational Bindings:
Default Priority: 0
Protected: Disabled
VLAN36
SW1
int-sw1#show interfaces switchport gi1/0/44
Port: Gi1/0/44
VLAN Membership Mode: Access Mode
Access Mode VLAN: 36
General Mode PVID: 1 (default)
General Mode Ingress Filtering: Enabled
General Mode Acceptable Frame Type: Admit All
General Mode Dynamically Added VLANs:
General Mode Untagged VLANs: 1
General Mode Tagged VLANs:
General Mode Forbidden VLANs:
Trunking Mode Native VLAN: 1 (default)
Trunking Mode Native VLAN Tagging: Disabled
Trunking Mode VLANs Enabled: All
Private VLAN Host Association: none
Private VLAN Mapping:
Private VLAN Operational Bindings:
Default Priority: 0
Protected: Disabled
DELL-Josh Cr
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June 19th, 2020 14:00
Blocking state happens when it detects a loop in the network and blocks traffic to stop the loop.
Mr.Smith26
8 Posts
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June 26th, 2020 10:00
From my understanding, I didn't configure a LAG, or LACP, so I the switches were thinking it was a loop. I sent all of the VLANs through one trunk port and they are working now.
Mr.Smith26
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June 18th, 2020 15:00
Mr.Smith26
8 Posts
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June 18th, 2020 15:00
Sorry
SW2 for VLAN36
int-sw2#show interfaces switchport gigabitethernet1/0/19
Port: Gi1/0/19
VLAN Membership Mode: Access Mode
Access Mode VLAN: 36
General Mode PVID: 1 (default)
General Mode Ingress Filtering: Enabled
General Mode Acceptable Frame Type: Admit All
General Mode Dynamically Added VLANs:
General Mode Untagged VLANs: 1
General Mode Tagged VLANs:
General Mode Forbidden VLANs:
Trunking Mode Native VLAN: 1 (default)
Trunking Mode Native VLAN Tagging: Disabled
Trunking Mode VLANs Enabled: All
Private VLAN Host Association: none
Private VLAN Mapping:
Private VLAN Operational Bindings:
Default Priority: 0
Protected: Disabled
DELL-Josh Cr
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June 19th, 2020 09:00
Hi,
How are you testing? Do you have a client device connected to each switch on the other vlans and are pinging through? Typically switch to switch links are configured as trunk ports to carry all of the VLANs.
Mr.Smith26
8 Posts
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June 19th, 2020 12:00
I am testing with both the switches and client end devices.
So both switches can ping an end device, and each end device can ping the switch it is directly connected to.
I had them configured as trunk at first, but they weren't working. So I figured I would try to narrow down the solution as much as possible
DELL-Josh Cr
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8.5K Posts
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June 19th, 2020 13:00
Does spanning tree show the ports in a blocking state?
Mr.Smith26
8 Posts
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June 19th, 2020 14:00
what is the difference between the blocking state, and how do I change it?
Mr.Smith26
8 Posts
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June 25th, 2020 09:00
Here is what my spanning tree shows
Sw1
Gi1/0/24 Enabled 128.24 0 DIS Disb No
Gi1/0/25 Enabled 128.25 20000 FWD Desg No ****This is the port Being used***
Gi1/0/26 Enabled 128.26 0 DIS Disb No
Sw2
Gi1/0/18 Enabled 128.18 0 DIS Disb No
Gi1/0/19 Enabled 128.19 20000 DSC Altn No ****This is the port being used*****
Mr.Smith26
8 Posts
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June 25th, 2020 10:00
This is what my spanning tree shows
Sw1
Gi1/0/44 Enabled 128.44 20000 FWD Desg No
Sw2
Gi1/0/19 Enabled 128.19 20000 DSC Altn No
There is a FWD Root on port 5 of Sw2, could that be causing the problem?