There is device called Video Conferencing Unit ( or simply VC unit), attached with Switch port.
User is not able to access this VC unit.
We need to troubleshoot to make this VC unit accesible by user.
DETAILS GIVEN BY USER
Got details of IP assigned to VC unit, 10.149.233.133/24
Now, we have to make POA ( Plan Of Action ) to Troubleshoot Issue
- Need to confirm Switch port on which VC unit is connected
- After confirming Switch Port, we will confirm the Switch port configuration
I turned on switch port monitoring at Switch.
To Turn On the monitoring, use command: terminal monitor, on the switch without entering into the config mode
I asked User to simply Turn On/ Turn Off the connected VC unit, so that i can receive the Switch port logs
Jul 31 16:47:35 CDT: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/30, changed state to down
Jul 31 16:47:36 CDT: %LINK-3-UPDOWN: Interface FastEthernet0/30, changed state to down
Jul 31 16:47:44 CDT: %LINK-3-UPDOWN: Interface FastEthernet0/30, changed state to up
Jul 31 16:47:45 CDT: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/30, changed state to up
Now, Switch port is confirmed, FastEthernet0/30
Checking Switch Port Configuration
sw_3rd_07#sh running-config int fastEthernet 0/30
description 3rd Floor Data
power inline consumption 6300
power inline auto max 7700
switchport access vlan 31
switchport mode access
Here, we need to confirm Subnet assigned to VLAN 31.
But, the switch on which this VC unit is assigned is Layer 2.
So, we need to find the Layer 3 Switch in the network, where Layer 3 VLAN’s are formed, to find out the Subnet assigned to VLAN 31.
So, I did traceroute to find the Layer 3 switch
Type escape sequence to abort.
Tracing the route to 10.146.1.254
1 10.149.231.2 0 msec 0 msec 0 msec <———- This is the Layer 3 Switch
After reaching the Layer 3 switch, i am able to get the detail of Subnet assigned to VLAN 31
which is 10.149.232.0/24
Fastethernet 0/30 is part of VLAN 31, VLAN 31 assigned subnet is 10.149.232.0/24
IP assigned to VC unit is 10.149.233.133/24, which belongs to VLAN 32.
Port Fastethernet 0/30 is now made part of VLAN 32, instead of VLAN 31. This solution worked out.