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VLan from access port does not connected over Trunk port
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05-16-2024 05:24 PM - edited 05-16-2024 07:05 PM
Hi Cisco Community,
I am fairly new to the Cisco Catalyst family and I have inherited a system which I need to upgrade/expanded/optimize.
In this process I have come across a situation which is very strange (to my limited knowledge). Here it goes:
I have a network of seven switches (C2960X Series), which includes a stack of a 48P-X and 24P-X models.
I have another C9260X-48P that does not form part of this network, and I want to integrate it into it.
The current topology is a star.
I have configured on the stack port gi2/0/45 a trunk, with native and default on vlan 1, and on the other switch port Gi1/0/45,
also as a trunk, with native and default on vlan 1. From the switch that does not form part of the network, I can ping the stacked
switch and all components on the network. Also from the stacked switch, I can ping the switch that I want to add without a problem.
I configured one port on the switch, that does not form part of the network, as an access port using vlan 1. The computer on that port can ping the switch, but nothing beyond the switch. The switch itself can ping the computer. Shouldn't the computer be able to ping everything on the network?? What am I missing?
What information do you require to be help to assist me?
Thanks,
DarBeau.
Let's call the switch in the Stack as Switch1 and the switch that need to be added to the network, Switch2.
These are the ip addresses in play:
======================================
Switch1: 192.168.0.120
Switch2: 192.168.0.127
Workstation on switch2 (gi1/0/35): 192.168.0.131
Internet modem: 192.168.0.4
This is the configuration of Switch 1:
======================================
Switch1#show run interface gi2/0/45
Building configuration...
Current configuration : 62 bytes
!
interface GigabitEthernet2/0/45
switchport mode trunk
end
Switch1#show vlan
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Gi1/0/2, Gi1/0/3, Gi1/0/4, Gi1/0/5, Gi1/0/6, Gi1/0/7, Gi1/0/8, Gi1/0/9, Gi1/0/10
Gi1/0/11, Gi1/0/13, Gi1/0/14, Gi1/0/15, Gi1/0/16, Gi1/0/17, Gi1/0/18, Gi1/0/19
Gi1/0/20, Gi1/0/21, Gi1/0/22, Gi1/0/23, Gi1/0/24, Gi1/0/27, Gi1/0/28, Gi2/0/1, Gi2/0/2
Gi2/0/3, Gi2/0/4, Gi2/0/5, Gi2/0/6, Gi2/0/7, Gi2/0/8, Gi2/0/9, Gi2/0/10, Gi2/0/11
Gi2/0/12, Gi2/0/13, Gi2/0/14, Gi2/0/18, Gi2/0/19, Gi2/0/25, Gi2/0/27, Gi2/0/28
Gi2/0/29, Gi2/0/30, Gi2/0/31, Gi2/0/32, Gi2/0/33, Gi2/0/35, Gi2/0/36, Gi2/0/37
Gi2/0/39, Gi2/0/40, Gi2/0/41, Gi2/0/42, Gi2/0/43, Gi2/0/44, Gi2/0/46, Gi2/0/47
Gi2/0/48, Gi2/0/49, Gi2/0/52
150 other active Gi1/0/2, Gi1/0/3, Gi1/0/4, Gi1/0/5, Gi1/0/6, Gi1/0/7, Gi1/0/8, Gi1/0/9, Gi1/0/10
Gi1/0/11, Gi1/0/13, Gi1/0/14, Gi1/0/15, Gi1/0/16, Gi1/0/17, Gi1/0/18, Gi1/0/19
Gi1/0/20, Gi1/0/21, Gi1/0/22, Gi1/0/23, Gi1/0/24, Gi2/0/2, Gi2/0/3, Gi2/0/4, Gi2/0/5
Gi2/0/6, Gi2/0/8, Gi2/0/9, Gi2/0/10, Gi2/0/11, Gi2/0/12, Gi2/0/13, Gi2/0/14, Gi2/0/18
Gi2/0/19, Gi2/0/20, Gi2/0/25, Gi2/0/27, Gi2/0/28, Gi2/0/29, Gi2/0/33, Gi2/0/34
Gi2/0/35, Gi2/0/36
1002 fddi-default act/unsup
1003 token-ring-default act/unsup
1004 fddinet-default act/unsup
1005 trnet-default act/unsup
VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2
---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
1 enet 100001 1500 - - - - - 0 0
150 enet 100150 1500 - - - - - 0 0
1002 fddi 101002 1500 - - - - - 0 0
1003 tr 101003 1500 - - - - - 0 0
1004 fdnet 101004 1500 - - - ieee - 0 0
1005 trnet 101005 1500 - - - ibm - 0 0
Remote SPAN VLANs
------------------------------------------------------------------------------
Primary Secondary Type Ports
------- --------- ----------------- ------------------------------------------
Switch1#show interface gi2/0/45 trunk
Port Mode Encapsulation Status Native vlan
Gi2/0/45 on 802.1q trunking 1
Port Vlans allowed on trunk
Gi2/0/45 1-4094
Port Vlans allowed and active in management domain
Gi2/0/45 1,150
Port Vlans in spanning tree forwarding state and not pruned
Gi2/0/45 1,150
Switch1#show interface gi2/0/45 switchport
Name: Gi2/0/45
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: On
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Administrative Native VLAN tagging: enabled
Voice VLAN: none
Administrative private-vlan host-association: none
Administrative private-vlan mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk Native VLAN tagging: enabled
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk associations: none
Administrative private-vlan trunk mappings: none
Operational private-vlan: none
Trunking VLANs Enabled: ALL
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL
Protected: false
Unknown unicast blocked: disabled
Unknown multicast blocked: disabled
Appliance trust: none
Switch1#show ip interface brief
Interface IP-Address OK? Method Status Protocol
Vlan1 192.168.0.120 YES NVRAM up up
FastEthernet0 unassigned YES NVRAM administratively down down
GigabitEthernet1/0/1 unassigned YES unset up up
GigabitEthernet1/0/2 unassigned YES unset up up
GigabitEthernet1/0/3 unassigned YES unset up up
GigabitEthernet1/0/4 unassigned YES unset up up
GigabitEthernet1/0/5 unassigned YES unset up up
GigabitEthernet1/0/6 unassigned YES unset up up
GigabitEthernet1/0/7 unassigned YES unset down down
GigabitEthernet1/0/8 unassigned YES unset down down
GigabitEthernet1/0/9 unassigned YES unset up up
GigabitEthernet1/0/10 unassigned YES unset up up
GigabitEthernet1/0/11 unassigned YES unset up up
GigabitEthernet1/0/12 unassigned YES unset up up
GigabitEthernet1/0/13 unassigned YES unset down down
GigabitEthernet1/0/14 unassigned YES unset up up
GigabitEthernet1/0/15 unassigned YES unset up up
GigabitEthernet1/0/16 unassigned YES unset up up
GigabitEthernet1/0/17 unassigned YES unset up up
GigabitEthernet1/0/18 unassigned YES unset up up
GigabitEthernet1/0/19 unassigned YES unset up up
GigabitEthernet1/0/20 unassigned YES unset up up
GigabitEthernet1/0/21 unassigned YES unset up up
GigabitEthernet1/0/22 unassigned YES unset up up
GigabitEthernet1/0/23 unassigned YES unset up up
GigabitEthernet1/0/24 unassigned YES unset down down
GigabitEthernet1/0/25 unassigned YES unset up up
GigabitEthernet1/0/26 unassigned YES unset up up
GigabitEthernet1/0/27 unassigned YES unset down down
GigabitEthernet1/0/28 unassigned YES unset down down
GigabitEthernet2/0/1 unassigned YES unset down down
GigabitEthernet2/0/2 unassigned YES unset up up
GigabitEthernet2/0/3 unassigned YES unset up up
GigabitEthernet2/0/4 unassigned YES unset up up
GigabitEthernet2/0/5 unassigned YES unset up up
GigabitEthernet2/0/6 unassigned YES unset up up
GigabitEthernet2/0/7 unassigned YES unset up up
GigabitEthernet2/0/8 unassigned YES unset up up
GigabitEthernet2/0/9 unassigned YES unset up up
GigabitEthernet2/0/10 unassigned YES unset up up
GigabitEthernet2/0/11 unassigned YES unset down down
GigabitEthernet2/0/12 unassigned YES unset up up
GigabitEthernet2/0/13 unassigned YES unset up up
GigabitEthernet2/0/14 unassigned YES unset up up
GigabitEthernet2/0/15 unassigned YES unset up up
GigabitEthernet2/0/16 unassigned YES unset up up
GigabitEthernet2/0/17 unassigned YES unset up up
GigabitEthernet2/0/18 unassigned YES unset up up
GigabitEthernet2/0/19 unassigned YES unset up up
GigabitEthernet2/0/20 unassigned YES unset down down
GigabitEthernet2/0/21 unassigned YES unset up up
GigabitEthernet2/0/22 unassigned YES unset up up
GigabitEthernet2/0/23 unassigned YES unset up up
GigabitEthernet2/0/24 unassigned YES unset up up
GigabitEthernet2/0/25 unassigned YES unset down down
GigabitEthernet2/0/26 unassigned YES unset up up
GigabitEthernet2/0/27 unassigned YES unset up up
GigabitEthernet2/0/28 unassigned YES unset down down
GigabitEthernet2/0/29 unassigned YES unset down down
GigabitEthernet2/0/30 unassigned YES unset down down
GigabitEthernet2/0/31 unassigned YES unset down down
GigabitEthernet2/0/32 unassigned YES unset down down
GigabitEthernet2/0/33 unassigned YES unset up up
GigabitEthernet2/0/34 unassigned YES unset down down
GigabitEthernet2/0/35 unassigned YES unset up up
GigabitEthernet2/0/36 unassigned YES unset up up
GigabitEthernet2/0/37 unassigned YES unset down down
GigabitEthernet2/0/38 unassigned YES unset up up
GigabitEthernet2/0/39 unassigned YES unset down down
GigabitEthernet2/0/40 unassigned YES unset down down
GigabitEthernet2/0/41 unassigned YES unset down down
GigabitEthernet2/0/42 unassigned YES unset down down
GigabitEthernet2/0/43 unassigned YES unset down down
GigabitEthernet2/0/44 unassigned YES unset down down
GigabitEthernet2/0/45 unassigned YES unset up up
GigabitEthernet2/0/46 unassigned YES unset administratively down down
GigabitEthernet2/0/47 unassigned YES unset down down
GigabitEthernet2/0/48 unassigned YES unset down down
GigabitEthernet2/0/49 unassigned YES unset down down
GigabitEthernet2/0/50 unassigned YES unset up up
GigabitEthernet2/0/51 unassigned YES unset up up
GigabitEthernet2/0/52 unassigned YES unset down down
Port-channel2 unassigned YES unset down down
Port-channel3 unassigned YES unset down down
Port-channel4 unassigned YES unset down down
Port-channel5 unassigned YES unset down down
Switch1#ping 192.168.0.127
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.0.127, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 3/6/14 ms
Switch1#ping 192.168.0.131
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.0.131, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
Switch1#
This is the configuration of Switch 2:
======================================
Switch2#show run interface gi1/0/45
Building configuration...
Current configuration : 62 bytes
!
interface GigabitEthernet1/0/45
switchport mode trunk
end
Switch2#show run interface gi1/0/35
Building configuration...
Current configuration : 91 bytes
!
interface GigabitEthernet1/0/35
switchport mode access
spanning-tree portfast edge
end
Switch2#show vlan
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Gi1/0/1, Gi1/0/2, Gi1/0/3
Gi1/0/4, Gi1/0/5, Gi1/0/6
Gi1/0/7, Gi1/0/8, Gi1/0/9
Gi1/0/10, Gi1/0/11, Gi1/0/12
Gi1/0/13, Gi1/0/14, Gi1/0/15
Gi1/0/16, Gi1/0/17, Gi1/0/18
Gi1/0/19, Gi1/0/20, Gi1/0/21
Gi1/0/22, Gi1/0/23, Gi1/0/24
Gi1/0/25, Gi1/0/26, Gi1/0/27
Gi1/0/28, Gi1/0/29, Gi1/0/30
Gi1/0/31, Gi1/0/32, Gi1/0/33
Gi1/0/34, Gi1/0/35, Gi1/0/36
Gi1/0/37, Gi1/0/38, Gi1/0/39
Gi1/0/40, Gi1/0/41, Gi1/0/42
Gi1/0/43, Gi1/0/44, Gi1/0/46
Gi1/0/47, Gi1/0/48, Gi1/0/49
Gi1/0/50, Gi1/0/51, Gi1/0/52
1002 fddi-default act/unsup
1003 trcrf-default act/unsup
1004 fddinet-default act/unsup
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1005 trbrf-default act/unsup
VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2
---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
1 enet 100001 1500 - - - - - 0 0
1002 fddi 101002 1500 - - - - - 0 0
1003 trcrf 101003 4472 1005 3276 - - srb 0 0
1004 fdnet 101004 1500 - - - ieee - 0 0
1005 trbrf 101005 4472 - - 15 ibm - 0 0
VLAN AREHops STEHops Backup CRF
---- ------- ------- ----------
1003 7 7 off
Remote SPAN VLANs
------------------------------------------------------------------------------
Primary Secondary Type Ports
------- --------- ----------------- ------------------------------------------
Switch2#show interface gi1/0/45 trunk
Port Mode Encapsulation Status Native vlan
Gi1/0/45 on 802.1q trunking 1
Port Vlans allowed on trunk
Gi1/0/45 1-4094
Port Vlans allowed and active in management domain
Gi1/0/45 1
Port Vlans in spanning tree forwarding state and not pruned
Gi1/0/45 1
Switch2#show interface gi1/0/45 switchport
Name: Gi1/0/45
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: On
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Administrative Native VLAN tagging: disabled
Voice VLAN: none
Administrative private-vlan host-association: none
Administrative private-vlan mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk Native VLAN tagging: enabled
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk associations: none
Administrative private-vlan trunk mappings: none
Operational private-vlan: none
Trunking VLANs Enabled: ALL
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL
Protected: false
Unknown unicast blocked: disabled
Unknown multicast blocked: disabled
Appliance trust: none
Switch2#
Switch2#
Switch2#show ip interface brief
Interface IP-Address OK? Method Status Protocol
Vlan1 192.168.0.127 YES manual up up
Vlan60 aaa.bbb.ccc.dd YES manual up down
FastEthernet0 unassigned YES manual administratively down down
GigabitEthernet1/0/1 unassigned YES unset up up
GigabitEthernet1/0/2 unassigned YES unset up up
GigabitEthernet1/0/3 unassigned YES unset down down
GigabitEthernet1/0/4 unassigned YES unset up up
GigabitEthernet1/0/5 unassigned YES unset down down
GigabitEthernet1/0/6 unassigned YES unset down down
GigabitEthernet1/0/7 unassigned YES unset down down
GigabitEthernet1/0/8 unassigned YES unset down down
GigabitEthernet1/0/9 unassigned YES unset down down
GigabitEthernet1/0/10 unassigned YES unset down down
GigabitEthernet1/0/11 unassigned YES unset down down
GigabitEthernet1/0/12 unassigned YES unset down down
GigabitEthernet1/0/13 unassigned YES unset down down
GigabitEthernet1/0/14 unassigned YES unset down down
GigabitEthernet1/0/15 unassigned YES unset down down
GigabitEthernet1/0/16 unassigned YES unset down down
GigabitEthernet1/0/17 unassigned YES unset down down
GigabitEthernet1/0/18 unassigned YES unset down down
GigabitEthernet1/0/19 unassigned YES unset down down
GigabitEthernet1/0/20 unassigned YES unset down down
GigabitEthernet1/0/21 unassigned YES unset down down
GigabitEthernet1/0/22 unassigned YES unset down down
GigabitEthernet1/0/23 unassigned YES unset down down
GigabitEthernet1/0/24 unassigned YES unset down down
GigabitEthernet1/0/25 unassigned YES unset down down
GigabitEthernet1/0/26 unassigned YES unset down down
GigabitEthernet1/0/27 unassigned YES unset down down
GigabitEthernet1/0/28 unassigned YES unset down down
GigabitEthernet1/0/29 unassigned YES unset down down
GigabitEthernet1/0/30 unassigned YES unset down down
GigabitEthernet1/0/31 unassigned YES unset down down
GigabitEthernet1/0/32 unassigned YES unset down down
GigabitEthernet1/0/33 unassigned YES unset down down
GigabitEthernet1/0/34 unassigned YES unset down down
GigabitEthernet1/0/35 unassigned YES unset up up
GigabitEthernet1/0/36 unassigned YES unset up up
GigabitEthernet1/0/37 unassigned YES unset down down
GigabitEthernet1/0/38 unassigned YES unset down down
GigabitEthernet1/0/39 unassigned YES unset down down
GigabitEthernet1/0/40 unassigned YES unset down down
GigabitEthernet1/0/41 unassigned YES unset down down
GigabitEthernet1/0/42 unassigned YES unset down down
GigabitEthernet1/0/43 unassigned YES unset down down
GigabitEthernet1/0/44 unassigned YES unset down down
GigabitEthernet1/0/45 unassigned YES unset up up
GigabitEthernet1/0/46 unassigned YES unset down down
GigabitEthernet1/0/47 unassigned YES unset down down
GigabitEthernet1/0/48 unassigned YES unset down down
GigabitEthernet1/0/49 unassigned YES unset down down
GigabitEthernet1/0/50 unassigned YES unset down down
GigabitEthernet1/0/51 unassigned YES unset down down
GigabitEthernet1/0/52 unassigned YES unset down down
Switch2#
Switch2#ping 192.168.0.131
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.0.131, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/4/11 ms
Switch2#ping 192.168.0.120
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.0.120, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/8/35 ms
Switch2#ping 192.168.0.4
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.0.4, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/211/1003 ms
Switch2#
This is the testing from the workstation connected to switch2 gi1/0/35
C:\>ping 192.168.0.127
Pinging 192.168.0.127 with 32 bytes of data:
Reply from 192.168.0.127: bytes=32 time=1ms TTL=255
Reply from 192.168.0.127: bytes=32 time=1ms TTL=255
Reply from 192.168.0.127: bytes=32 time=1ms TTL=255
Reply from 192.168.0.127: bytes=32 time<1ms TTL=255
Ping statistics for 192.168.0.127:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 1ms, Average = 0ms
C:\>ping 192.168.0.120
Pinging 192.168.0.120 with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Ping statistics for 192.168.0.120:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
C:\>
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05-16-2024 06:21 PM
Thank you for your quick reply Ammahend,
I have been working with switches for more then 10 years now, just not Cisco Catalyst switches.
and yes, I am taking courses (through YouTube). But here is more information, as far as I can see, it should work:
Let's call the switch in the Stack as Switch1 and the switch that need to be added to the network, Switch2.
These are the ip addresses in play:
======================================
Switch1: 192.168.0.120
Switch2: 192.168.0.127
Workstation on switch2 (gi1/0/35): 192.168.0.131
Internet modem: 192.168.0.4
This is the configuration of Switch 1:
======================================
Switch1#show run interface gi2/0/45
Building configuration...
Current configuration : 62 bytes
!
interface GigabitEthernet2/0/45
switchport mode trunk
end
Switch1#show vlan
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Gi1/0/2, Gi1/0/3, Gi1/0/4, Gi1/0/5, Gi1/0/6, Gi1/0/7, Gi1/0/8, Gi1/0/9, Gi1/0/10
Gi1/0/11, Gi1/0/13, Gi1/0/14, Gi1/0/15, Gi1/0/16, Gi1/0/17, Gi1/0/18, Gi1/0/19
Gi1/0/20, Gi1/0/21, Gi1/0/22, Gi1/0/23, Gi1/0/24, Gi1/0/27, Gi1/0/28, Gi2/0/1, Gi2/0/2
Gi2/0/3, Gi2/0/4, Gi2/0/5, Gi2/0/6, Gi2/0/7, Gi2/0/8, Gi2/0/9, Gi2/0/10, Gi2/0/11
Gi2/0/12, Gi2/0/13, Gi2/0/14, Gi2/0/18, Gi2/0/19, Gi2/0/25, Gi2/0/27, Gi2/0/28
Gi2/0/29, Gi2/0/30, Gi2/0/31, Gi2/0/32, Gi2/0/33, Gi2/0/35, Gi2/0/36, Gi2/0/37
Gi2/0/39, Gi2/0/40, Gi2/0/41, Gi2/0/42, Gi2/0/43, Gi2/0/44, Gi2/0/46, Gi2/0/47
Gi2/0/48, Gi2/0/49, Gi2/0/52
150 other active Gi1/0/2, Gi1/0/3, Gi1/0/4, Gi1/0/5, Gi1/0/6, Gi1/0/7, Gi1/0/8, Gi1/0/9, Gi1/0/10
Gi1/0/11, Gi1/0/13, Gi1/0/14, Gi1/0/15, Gi1/0/16, Gi1/0/17, Gi1/0/18, Gi1/0/19
Gi1/0/20, Gi1/0/21, Gi1/0/22, Gi1/0/23, Gi1/0/24, Gi2/0/2, Gi2/0/3, Gi2/0/4, Gi2/0/5
Gi2/0/6, Gi2/0/8, Gi2/0/9, Gi2/0/10, Gi2/0/11, Gi2/0/12, Gi2/0/13, Gi2/0/14, Gi2/0/18
Gi2/0/19, Gi2/0/20, Gi2/0/25, Gi2/0/27, Gi2/0/28, Gi2/0/29, Gi2/0/33, Gi2/0/34
Gi2/0/35, Gi2/0/36
1002 fddi-default act/unsup
1003 token-ring-default act/unsup
1004 fddinet-default act/unsup
1005 trnet-default act/unsup
VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2
---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
1 enet 100001 1500 - - - - - 0 0
150 enet 100150 1500 - - - - - 0 0
1002 fddi 101002 1500 - - - - - 0 0
1003 tr 101003 1500 - - - - - 0 0
1004 fdnet 101004 1500 - - - ieee - 0 0
1005 trnet 101005 1500 - - - ibm - 0 0
Remote SPAN VLANs
------------------------------------------------------------------------------
Primary Secondary Type Ports
------- --------- ----------------- ------------------------------------------
Switch1#show interface gi2/0/45 trunk
Port Mode Encapsulation Status Native vlan
Gi2/0/45 on 802.1q trunking 1
Port Vlans allowed on trunk
Gi2/0/45 1-4094
Port Vlans allowed and active in management domain
Gi2/0/45 1,150
Port Vlans in spanning tree forwarding state and not pruned
Gi2/0/45 1,150
Switch1#show interface gi2/0/45 switchport
Name: Gi2/0/45
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: On
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Administrative Native VLAN tagging: enabled
Voice VLAN: none
Administrative private-vlan host-association: none
Administrative private-vlan mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk Native VLAN tagging: enabled
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk associations: none
Administrative private-vlan trunk mappings: none
Operational private-vlan: none
Trunking VLANs Enabled: ALL
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL
Protected: false
Unknown unicast blocked: disabled
Unknown multicast blocked: disabled
Appliance trust: none
Switch1#show ip interface brief
Interface IP-Address OK? Method Status Protocol
Vlan1 192.168.0.120 YES NVRAM up up
FastEthernet0 unassigned YES NVRAM administratively down down
GigabitEthernet1/0/1 unassigned YES unset up up
GigabitEthernet1/0/2 unassigned YES unset up up
GigabitEthernet1/0/3 unassigned YES unset up up
GigabitEthernet1/0/4 unassigned YES unset up up
GigabitEthernet1/0/5 unassigned YES unset up up
GigabitEthernet1/0/6 unassigned YES unset up up
GigabitEthernet1/0/7 unassigned YES unset down down
GigabitEthernet1/0/8 unassigned YES unset down down
GigabitEthernet1/0/9 unassigned YES unset up up
GigabitEthernet1/0/10 unassigned YES unset up up
GigabitEthernet1/0/11 unassigned YES unset up up
GigabitEthernet1/0/12 unassigned YES unset up up
GigabitEthernet1/0/13 unassigned YES unset down down
GigabitEthernet1/0/14 unassigned YES unset up up
GigabitEthernet1/0/15 unassigned YES unset up up
GigabitEthernet1/0/16 unassigned YES unset up up
GigabitEthernet1/0/17 unassigned YES unset up up
GigabitEthernet1/0/18 unassigned YES unset up up
GigabitEthernet1/0/19 unassigned YES unset up up
GigabitEthernet1/0/20 unassigned YES unset up up
GigabitEthernet1/0/21 unassigned YES unset up up
GigabitEthernet1/0/22 unassigned YES unset up up
GigabitEthernet1/0/23 unassigned YES unset up up
GigabitEthernet1/0/24 unassigned YES unset down down
GigabitEthernet1/0/25 unassigned YES unset up up
GigabitEthernet1/0/26 unassigned YES unset up up
GigabitEthernet1/0/27 unassigned YES unset down down
GigabitEthernet1/0/28 unassigned YES unset down down
GigabitEthernet2/0/1 unassigned YES unset down down
GigabitEthernet2/0/2 unassigned YES unset up up
GigabitEthernet2/0/3 unassigned YES unset up up
GigabitEthernet2/0/4 unassigned YES unset up up
GigabitEthernet2/0/5 unassigned YES unset up up
GigabitEthernet2/0/6 unassigned YES unset up up
GigabitEthernet2/0/7 unassigned YES unset up up
GigabitEthernet2/0/8 unassigned YES unset up up
GigabitEthernet2/0/9 unassigned YES unset up up
GigabitEthernet2/0/10 unassigned YES unset up up
GigabitEthernet2/0/11 unassigned YES unset down down
GigabitEthernet2/0/12 unassigned YES unset up up
GigabitEthernet2/0/13 unassigned YES unset up up
GigabitEthernet2/0/14 unassigned YES unset up up
GigabitEthernet2/0/15 unassigned YES unset up up
GigabitEthernet2/0/16 unassigned YES unset up up
GigabitEthernet2/0/17 unassigned YES unset up up
GigabitEthernet2/0/18 unassigned YES unset up up
GigabitEthernet2/0/19 unassigned YES unset up up
GigabitEthernet2/0/20 unassigned YES unset down down
GigabitEthernet2/0/21 unassigned YES unset up up
GigabitEthernet2/0/22 unassigned YES unset up up
GigabitEthernet2/0/23 unassigned YES unset up up
GigabitEthernet2/0/24 unassigned YES unset up up
GigabitEthernet2/0/25 unassigned YES unset down down
GigabitEthernet2/0/26 unassigned YES unset up up
GigabitEthernet2/0/27 unassigned YES unset up up
GigabitEthernet2/0/28 unassigned YES unset down down
GigabitEthernet2/0/29 unassigned YES unset down down
GigabitEthernet2/0/30 unassigned YES unset down down
GigabitEthernet2/0/31 unassigned YES unset down down
GigabitEthernet2/0/32 unassigned YES unset down down
GigabitEthernet2/0/33 unassigned YES unset up up
GigabitEthernet2/0/34 unassigned YES unset down down
GigabitEthernet2/0/35 unassigned YES unset up up
GigabitEthernet2/0/36 unassigned YES unset up up
GigabitEthernet2/0/37 unassigned YES unset down down
GigabitEthernet2/0/38 unassigned YES unset up up
GigabitEthernet2/0/39 unassigned YES unset down down
GigabitEthernet2/0/40 unassigned YES unset down down
GigabitEthernet2/0/41 unassigned YES unset down down
GigabitEthernet2/0/42 unassigned YES unset down down
GigabitEthernet2/0/43 unassigned YES unset down down
GigabitEthernet2/0/44 unassigned YES unset down down
GigabitEthernet2/0/45 unassigned YES unset up up
GigabitEthernet2/0/46 unassigned YES unset administratively down down
GigabitEthernet2/0/47 unassigned YES unset down down
GigabitEthernet2/0/48 unassigned YES unset down down
GigabitEthernet2/0/49 unassigned YES unset down down
GigabitEthernet2/0/50 unassigned YES unset up up
GigabitEthernet2/0/51 unassigned YES unset up up
GigabitEthernet2/0/52 unassigned YES unset down down
Port-channel2 unassigned YES unset down down
Port-channel3 unassigned YES unset down down
Port-channel4 unassigned YES unset down down
Port-channel5 unassigned YES unset down down
Switch1#ping 192.168.0.127
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.0.127, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 3/6/14 ms
Switch1#ping 192.168.0.131
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.0.131, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
Switch1#
This is the configuration of Switch 2:
======================================
Switch2#show run interface gi1/0/45
Building configuration...
Current configuration : 62 bytes
!
interface GigabitEthernet1/0/45
switchport mode trunk
end
Switch2#show run interface gi1/0/35
Building configuration...
Current configuration : 91 bytes
!
interface GigabitEthernet1/0/35
switchport mode access
spanning-tree portfast edge
end
Switch2#show vlan
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Gi1/0/1, Gi1/0/2, Gi1/0/3
Gi1/0/4, Gi1/0/5, Gi1/0/6
Gi1/0/7, Gi1/0/8, Gi1/0/9
Gi1/0/10, Gi1/0/11, Gi1/0/12
Gi1/0/13, Gi1/0/14, Gi1/0/15
Gi1/0/16, Gi1/0/17, Gi1/0/18
Gi1/0/19, Gi1/0/20, Gi1/0/21
Gi1/0/22, Gi1/0/23, Gi1/0/24
Gi1/0/25, Gi1/0/26, Gi1/0/27
Gi1/0/28, Gi1/0/29, Gi1/0/30
Gi1/0/31, Gi1/0/32, Gi1/0/33
Gi1/0/34, Gi1/0/35, Gi1/0/36
Gi1/0/37, Gi1/0/38, Gi1/0/39
Gi1/0/40, Gi1/0/41, Gi1/0/42
Gi1/0/43, Gi1/0/44, Gi1/0/46
Gi1/0/47, Gi1/0/48, Gi1/0/49
Gi1/0/50, Gi1/0/51, Gi1/0/52
1002 fddi-default act/unsup
1003 trcrf-default act/unsup
1004 fddinet-default act/unsup
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1005 trbrf-default act/unsup
VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2
---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
1 enet 100001 1500 - - - - - 0 0
1002 fddi 101002 1500 - - - - - 0 0
1003 trcrf 101003 4472 1005 3276 - - srb 0 0
1004 fdnet 101004 1500 - - - ieee - 0 0
1005 trbrf 101005 4472 - - 15 ibm - 0 0
VLAN AREHops STEHops Backup CRF
---- ------- ------- ----------
1003 7 7 off
Remote SPAN VLANs
------------------------------------------------------------------------------
Primary Secondary Type Ports
------- --------- ----------------- ------------------------------------------
Switch2#show interface gi1/0/45 trunk
Port Mode Encapsulation Status Native vlan
Gi1/0/45 on 802.1q trunking 1
Port Vlans allowed on trunk
Gi1/0/45 1-4094
Port Vlans allowed and active in management domain
Gi1/0/45 1
Port Vlans in spanning tree forwarding state and not pruned
Gi1/0/45 1
Switch2#show interface gi1/0/45 switchport
Name: Gi1/0/45
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: On
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Administrative Native VLAN tagging: disabled
Voice VLAN: none
Administrative private-vlan host-association: none
Administrative private-vlan mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk Native VLAN tagging: enabled
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk associations: none
Administrative private-vlan trunk mappings: none
Operational private-vlan: none
Trunking VLANs Enabled: ALL
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL
Protected: false
Unknown unicast blocked: disabled
Unknown multicast blocked: disabled
Appliance trust: none
Switch2#
Switch2#
Switch2#show ip interface brief
Interface IP-Address OK? Method Status Protocol
Vlan1 192.168.0.127 YES manual up up
Vlan60 aaa.bbb.ccc.dd YES manual up down
FastEthernet0 unassigned YES manual administratively down down
GigabitEthernet1/0/1 unassigned YES unset up up
GigabitEthernet1/0/2 unassigned YES unset up up
GigabitEthernet1/0/3 unassigned YES unset down down
GigabitEthernet1/0/4 unassigned YES unset up up
GigabitEthernet1/0/5 unassigned YES unset down down
GigabitEthernet1/0/6 unassigned YES unset down down
GigabitEthernet1/0/7 unassigned YES unset down down
GigabitEthernet1/0/8 unassigned YES unset down down
GigabitEthernet1/0/9 unassigned YES unset down down
GigabitEthernet1/0/10 unassigned YES unset down down
GigabitEthernet1/0/11 unassigned YES unset down down
GigabitEthernet1/0/12 unassigned YES unset down down
GigabitEthernet1/0/13 unassigned YES unset down down
GigabitEthernet1/0/14 unassigned YES unset down down
GigabitEthernet1/0/15 unassigned YES unset down down
GigabitEthernet1/0/16 unassigned YES unset down down
GigabitEthernet1/0/17 unassigned YES unset down down
GigabitEthernet1/0/18 unassigned YES unset down down
GigabitEthernet1/0/19 unassigned YES unset down down
GigabitEthernet1/0/20 unassigned YES unset down down
GigabitEthernet1/0/21 unassigned YES unset down down
GigabitEthernet1/0/22 unassigned YES unset down down
GigabitEthernet1/0/23 unassigned YES unset down down
GigabitEthernet1/0/24 unassigned YES unset down down
GigabitEthernet1/0/25 unassigned YES unset down down
GigabitEthernet1/0/26 unassigned YES unset down down
GigabitEthernet1/0/27 unassigned YES unset down down
GigabitEthernet1/0/28 unassigned YES unset down down
GigabitEthernet1/0/29 unassigned YES unset down down
GigabitEthernet1/0/30 unassigned YES unset down down
GigabitEthernet1/0/31 unassigned YES unset down down
GigabitEthernet1/0/32 unassigned YES unset down down
GigabitEthernet1/0/33 unassigned YES unset down down
GigabitEthernet1/0/34 unassigned YES unset down down
GigabitEthernet1/0/35 unassigned YES unset up up
GigabitEthernet1/0/36 unassigned YES unset up up
GigabitEthernet1/0/37 unassigned YES unset down down
GigabitEthernet1/0/38 unassigned YES unset down down
GigabitEthernet1/0/39 unassigned YES unset down down
GigabitEthernet1/0/40 unassigned YES unset down down
GigabitEthernet1/0/41 unassigned YES unset down down
GigabitEthernet1/0/42 unassigned YES unset down down
GigabitEthernet1/0/43 unassigned YES unset down down
GigabitEthernet1/0/44 unassigned YES unset down down
GigabitEthernet1/0/45 unassigned YES unset up up
GigabitEthernet1/0/46 unassigned YES unset down down
GigabitEthernet1/0/47 unassigned YES unset down down
GigabitEthernet1/0/48 unassigned YES unset down down
GigabitEthernet1/0/49 unassigned YES unset down down
GigabitEthernet1/0/50 unassigned YES unset down down
GigabitEthernet1/0/51 unassigned YES unset down down
GigabitEthernet1/0/52 unassigned YES unset down down
Switch2#
Switch2#ping 192.168.0.131
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.0.131, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/4/11 ms
Switch2#ping 192.168.0.120
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.0.120, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/8/35 ms
Switch2#ping 192.168.0.4
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.0.4, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/211/1003 ms
Switch2#
This is the testing from the workstation connected to switch2 gi1/0/35
C:\>ping 192.168.0.127
Pinging 192.168.0.127 with 32 bytes of data:
Reply from 192.168.0.127: bytes=32 time=1ms TTL=255
Reply from 192.168.0.127: bytes=32 time=1ms TTL=255
Reply from 192.168.0.127: bytes=32 time=1ms TTL=255
Reply from 192.168.0.127: bytes=32 time<1ms TTL=255
Ping statistics for 192.168.0.127:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 1ms, Average = 0ms
C:\>ping 192.168.0.120
Pinging 192.168.0.120 with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Ping statistics for 192.168.0.120:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
C:\>
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05-16-2024 07:09 PM - edited 05-16-2024 07:10 PM
The only thing different I see is "Administrative Native VLAN tagging" which is enable on one and disabled on another one, do try this command on switch 2 and see if it works
conf t
vlan dot1q tag native
Welcome to the world of Cisco !
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05-17-2024 03:34 AM
Thank you Ammahend,
I have tried changing like you said and it did not have any effect.
I still cannot ping the other switch. Any other suggestions?
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05-17-2024 08:25 AM - edited 05-17-2024 08:26 AM
after ping, when you do "arp-a" on PC do you see arp entry for 192.168.0.120 or its incomplete ?
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05-17-2024 11:05 AM
Hi Ammahend,
After I applied the "vlan dot1q tag native", I was not able to ping from switch2 to switch1.
I applied "no vlan dot1q tag native" to switch2 and now I can ping switch1 from switch2 again.
Other thing I have noticed, when I ping switch2 from the computer, it takes several seconds before I get a reply.
I do get a full reply (100%) though.
C:\>arp -a
Interface: 192.168.0.131 --- 0xb
Internet Address Physical Address Type
192.168.0.127 50-08-ac-bb-64-c0 dynamic
192.168.0.255 ff-ff-ff-ff-ff-ff static
.......
224.0.0.2 01-00-5e-00-00-02 static
I have removed some entries for privacy, they are from another IP range.
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05-17-2024 08:06 PM
if you are able to ping now, then arp entry must be ok now, how much is the reply time for ping ?
keep in mind the first ping take a bit of time, because it has to do arp but once the arp table is populated it should be quick 1-5ms.
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05-20-2024 11:07 AM
Hi Ammahend,
I am not able to ping. I am able to ping across vlan 1 ports on Switch2, but the traffic does not go trough the trunk.
I have even tried the following: I have a production switch on the network that is at same firmware level as Switch2.
I backed up and restored the configuration of that production switch, onto Switch2, changed the ip adddress of vlan 1 (to avoid IP conflict) and tried again. Could this be something of spanningtree not letting packets through?? (just learning about SPT right now). Or maybe the switch is simply deffective???
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05-20-2024 11:11 AM
can you draw the topolgy
MHM
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05-22-2024 10:42 AM
Hi Ammahend & MHM,
In **rther troubleshooting and researching I came across this article which I think is my problem:
https://community.cisco.com/t5/switching/ilet-1-authentication-fail-on-2960x-after-ios-update/td-p/3682974
Tried a couple of the fixes mentioned, like downgrading, remove stack module, etc. etc. None worked so I think
my only option is to call Cisco. Thanks for all the help!
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05-22-2024 11:50 AM
Quick update:
After restarting a couple of times after the firmware downgrade to 15.2(2)E5, the error messages did not appear anymore.
Now that the switch is not throwing those errors, I tested the setup again and now everything is working as should.
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