ARISTA - VXLAN Troubleshooting - Revision history

Admin at 16:27, 13 December 2025

2025-12-13T16:27:37Z

← Older revision		Revision as of 16:27, 13 December 2025
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	~~[[Category:Wiki]]~~

	== Checking VXLAN Tunnel Status ==		== Checking VXLAN Tunnel Status ==
	To verify the status of VXLAN tunnels, use the following command:		To verify the status of VXLAN tunnels, use the following command:

	<nowiki>		<nowiki>
	show vxlan tunnel		show vxlan tunnel</nowiki>
	</nowiki>

	This command shows information about the VXLAN tunnels including tunnel IDs, state, and the associated interfaces.		This command shows information about the VXLAN tunnels including tunnel IDs, state, and the associated interfaces.
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	<nowiki>		<nowiki>
	show running-configuration interface Vxlan1		show running-configuration interface Vxlan1</nowiki>
	</nowiki>

	This command will display the configuration of a specific VXLAN interface, such as Vxlan1. You can check the VXLAN source interface, remote VTEP IP addresses, and other details.		This command will display the configuration of a specific VXLAN interface, such as Vxlan1. You can check the VXLAN source interface, remote VTEP IP addresses, and other details.
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	<nowiki>		<nowiki>
	show vxlan forwarding		show vxlan forwarding</nowiki>
	</nowiki>

	This will show all mappings of VNIs, the associated MAC addresses, and IP addresses.		This will show all mappings of VNIs, the associated MAC addresses, and IP addresses.
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	<nowiki>		<nowiki>
	show vxlan neighbors		show vxlan neighbors</nowiki>
	</nowiki>

	This command gives you the list of remote VTEP peers, their tunnel states, and additional statistics.		This command gives you the list of remote VTEP peers, their tunnel states, and additional statistics.
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	<nowiki>		<nowiki>
	show mac address-table vxlan		show mac address-table vxlan</nowiki>
	</nowiki>

	This command will display MAC address learning entries for VXLAN, allowing you to check if MAC addresses are being correctly learned or flooded.		This command will display MAC address learning entries for VXLAN, allowing you to check if MAC addresses are being correctly learned or flooded.
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	<nowiki>		<nowiki>
	show ip route vxlan		show ip route vxlan</nowiki>
	</nowiki>

	This will show you the IP routes for VXLAN and their associated next hops.		This will show you the IP routes for VXLAN and their associated next hops.
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	<nowiki>		<nowiki>
	show running-configuration \| section vxlan		show running-configuration \| section vxlan</nowiki>
	</nowiki>

	This command filters the running configuration to display only the VXLAN-related settings, making it easier to spot inconsistencies.		This command filters the running configuration to display only the VXLAN-related settings, making it easier to spot inconsistencies.
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	<nowiki>		<nowiki>
	show ethernet-switching table vxlan		show ethernet-switching table vxlan</nowiki>
	</nowiki>

	This will show the Ethernet switching table for VXLAN and indicate whether there are any issues with the Layer 2 forwarding over the VXLAN network.		This will show the Ethernet switching table for VXLAN and indicate whether there are any issues with the Layer 2 forwarding over the VXLAN network.
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	<nowiki>		<nowiki>
	show bgp l2vpn evpn		show bgp l2vpn evpn</nowiki>
	</nowiki>

	This will show BGP EVPN status, including the advertised routes and BGP neighbor information specific to VXLAN.		This will show BGP EVPN status, including the advertised routes and BGP neighbor information specific to VXLAN.
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	<nowiki>		<nowiki>
	show system mtu		show system mtu</nowiki>
	</nowiki>

	This command helps to verify that the MTU is sufficient for VXLAN encapsulation and avoid issues like packet fragmentation.		This command helps to verify that the MTU is sufficient for VXLAN encapsulation and avoid issues like packet fragmentation.
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	<nowiki>		<nowiki>
	show interface Vxlan1 counters		show interface Vxlan1 counters</nowiki>
	</nowiki>

	This will show detailed statistics on the VXLAN interface, including the number of packets sent/received and any errors or drops.		This will show detailed statistics on the VXLAN interface, including the number of packets sent/received and any errors or drops.
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	<nowiki>		<nowiki>
	show bridging vxlan		show bridging vxlan</nowiki>
	</nowiki>

	This will display the status of VXLAN bridging, which helps in troubleshooting Layer 2 bridging problems within a VXLAN overlay.		This will display the status of VXLAN bridging, which helps in troubleshooting Layer 2 bridging problems within a VXLAN overlay.
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	<nowiki>		<nowiki>
	debug vxlan		debug vxlan</nowiki>
	</nowiki>

	This command provides detailed debug information for VXLAN-related events, such as tunnel establishment and traffic forwarding.		This command provides detailed debug information for VXLAN-related events, such as tunnel establishment and traffic forwarding.
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	<nowiki>		<nowiki>
	ping vxlan <remote VTEP IP>		ping vxlan <remote VTEP IP></nowiki>
	</nowiki>

	This command will send a ping request to the remote VTEP to ensure that the network path is active and reachable.		This command will send a ping request to the remote VTEP to ensure that the network path is active and reachable.
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	<nowiki>		<nowiki>
	show arp		show arp</nowiki>
	</nowiki>

	This shows the ARP table entries for VXLAN and can help identify ARP issues or mismatches that could cause VXLAN traffic to fail.		This shows the ARP table entries for VXLAN and can help identify ARP issues or mismatches that could cause VXLAN traffic to fail.
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	<nowiki>		<nowiki>
	show ip mroute		show ip mroute</nowiki>
	</nowiki>

	This will show multicast routing information and verify if multicast is functioning correctly for VXLAN.		This will show multicast routing information and verify if multicast is functioning correctly for VXLAN.
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	<nowiki>		<nowiki>
	show vrf VXLAN		show vrf VXLAN</nowiki>
	</nowiki>

	This command displays VRF-specific VXLAN details, including interfaces, IP addresses, and routing information.		This command displays VRF-specific VXLAN details, including interfaces, IP addresses, and routing information.
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	<nowiki>		<nowiki>
	show flow-collector vxlan		show flow-collector vxlan</nowiki>
	</nowiki>

	This command will display VXLAN-related traffic flow information, which is helpful in diagnosing performance or congestion issues in the VXLAN network.		This command will display VXLAN-related traffic flow information, which is helpful in diagnosing performance or congestion issues in the VXLAN network.

Admin at 16:26, 13 December 2025

2025-12-13T16:26:28Z

← Older revision		Revision as of 16:26, 13 December 2025
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			[[Category:Wiki]]

	== Checking VXLAN Tunnel Status ==		== Checking VXLAN Tunnel Status ==
	To verify the status of VXLAN tunnels, use the following command:		To verify the status of VXLAN tunnels, use the following command:

	<nowiki>		<nowiki>
	show vxlan tunnel		show vxlan tunnel
	</nowiki>		</nowiki>
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	To view the VXLAN interface configuration:		To view the VXLAN interface configuration:

	<nowiki>		<nowiki>
	show running-configuration interface Vxlan1		show running-configuration interface Vxlan1
	</nowiki>		</nowiki>
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	To check the VXLAN forwarding table, which maps VXLAN Network Identifiers (VNIs) to Layer 2 and Layer 3 addresses:		To check the VXLAN forwarding table, which maps VXLAN Network Identifiers (VNIs) to Layer 2 and Layer 3 addresses:

	<nowiki>		<nowiki>
	show vxlan forwarding		show vxlan forwarding
	</nowiki>		</nowiki>
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	To see the VTEP neighbor information, including the status and remote IPs of other VXLAN devices:		To see the VTEP neighbor information, including the status and remote IPs of other VXLAN devices:

	<nowiki>		<nowiki>
	show vxlan neighbors		show vxlan neighbors
	</nowiki>		</nowiki>
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	To view the MAC address table for VXLAN:		To view the MAC address table for VXLAN:

	<nowiki>		<nowiki>
	show mac address-table vxlan		show mac address-table vxlan
	</nowiki>		</nowiki>
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	To check the IP routing table for VXLAN:		To check the IP routing table for VXLAN:

	<nowiki>		<nowiki>
	show ip route vxlan		show ip route vxlan
	</nowiki>		</nowiki>
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	To verify that your VXLAN configuration is consistent across the device:		To verify that your VXLAN configuration is consistent across the device:

	<nowiki>		<nowiki>
	show running-configuration \| section vxlan		show running-configuration \| section vxlan
	</nowiki>		</nowiki>
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	To check the status of the Layer 2 overlay and ensure that VXLAN segments are functioning:		To check the status of the Layer 2 overlay and ensure that VXLAN segments are functioning:

	<nowiki>		<nowiki>
	show ethernet-switching table vxlan		show ethernet-switching table vxlan
	</nowiki>		</nowiki>
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	To check the status of VXLAN BGP EVPN (Border Gateway Protocol Ethernet Virtual Private Network), including routes and neighbors:		To check the status of VXLAN BGP EVPN (Border Gateway Protocol Ethernet Virtual Private Network), including routes and neighbors:

	<nowiki>		<nowiki>
	show bgp l2vpn evpn		show bgp l2vpn evpn
	</nowiki>		</nowiki>
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	To check the VXLAN MTU settings and ensure they are configured correctly for the encapsulation overhead:		To check the VXLAN MTU settings and ensure they are configured correctly for the encapsulation overhead:

	<nowiki>		<nowiki>
	show system mtu		show system mtu
	</nowiki>		</nowiki>
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	To verify the VXLAN data plane and check for any dropped packets or other issues:		To verify the VXLAN data plane and check for any dropped packets or other issues:

	<nowiki>		<nowiki>
	show interface Vxlan1 counters		show interface Vxlan1 counters
	</nowiki>		</nowiki>
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	If you're facing issues with VXLAN bridging, you can check the bridging status:		If you're facing issues with VXLAN bridging, you can check the bridging status:

	<nowiki>		<nowiki>
	show bridging vxlan		show bridging vxlan
	</nowiki>		</nowiki>
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	For deeper troubleshooting, use the following command to enable debugging for VXLAN:		For deeper troubleshooting, use the following command to enable debugging for VXLAN:

	<nowiki>		<nowiki>
	debug vxlan		debug vxlan
	</nowiki>		</nowiki>
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	To check VTEP-to-VTEP connectivity at the network layer, use the following command:		To check VTEP-to-VTEP connectivity at the network layer, use the following command:

	<nowiki>		<nowiki>
	ping vxlan <remote VTEP IP>		ping vxlan <remote VTEP IP>
	</nowiki>		</nowiki>
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	To verify ARP entries for VXLAN:		To verify ARP entries for VXLAN:

	<nowiki>		<nowiki>
	show arp		show arp
	</nowiki>		</nowiki>
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	If using VXLAN with multicast for BGP, you can check multicast group membership:		If using VXLAN with multicast for BGP, you can check multicast group membership:

	<nowiki>		<nowiki>
	show ip mroute		show ip mroute
	</nowiki>		</nowiki>
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	If VXLAN is configured within a VRF, use the following command to show VRF-specific VXLAN information:		If VXLAN is configured within a VRF, use the following command to show VRF-specific VXLAN information:

	<nowiki>		<nowiki>
	show vrf VXLAN		show vrf VXLAN
	</nowiki>		</nowiki>
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	For monitoring traffic flows across VXLAN, the `flow-collector` command is useful:		For monitoring traffic flows across VXLAN, the `flow-collector` command is useful:

	<nowiki>		<nowiki>
	show flow-collector vxlan		show flow-collector vxlan
	</nowiki>		</nowiki>

	This command will display VXLAN-related traffic flow information, which is helpful in diagnosing performance or congestion issues in the VXLAN network.		This command will display VXLAN-related traffic flow information, which is helpful in diagnosing performance or congestion issues in the VXLAN network.

Admin: Created page with "== Checking VXLAN Tunnel Status == To verify the status of VXLAN tunnels, use the following command: show vxlan tunnel This command shows information about the VXLAN tunnels including tunnel IDs, state, and the associated interfaces. == Checking VXLAN Interfaces == To view the VXLAN interface configuration: show running-configuration interface Vxlan1 This command will display the configuration of a specific VXLAN interface, such..."

2025-12-13T16:25:25Z

Created page with "== Checking VXLAN Tunnel Status == To verify the status of VXLAN tunnels, use the following command: <nowiki> show vxlan tunnel </nowiki> This command shows information about the VXLAN tunnels including tunnel IDs, state, and the associated interfaces. == Checking VXLAN Interfaces == To view the VXLAN interface configuration: <nowiki> show running-configuration interface Vxlan1 </nowiki> This command will display the configuration of a specific VXLAN interface, such..."

New page

== Checking VXLAN Tunnel Status ==
To verify the status of VXLAN tunnels, use the following command:

<nowiki>
show vxlan tunnel
</nowiki>

This command shows information about the VXLAN tunnels including tunnel IDs, state, and the associated interfaces.

== Checking VXLAN Interfaces ==
To view the VXLAN interface configuration:

<nowiki>
show running-configuration interface Vxlan1
</nowiki>

This command will display the configuration of a specific VXLAN interface, such as Vxlan1. You can check the VXLAN source interface, remote VTEP IP addresses, and other details.

== VXLAN Forwarding Table ==
To check the VXLAN forwarding table, which maps VXLAN Network Identifiers (VNIs) to Layer 2 and Layer 3 addresses:

<nowiki>
show vxlan forwarding
</nowiki>

This will show all mappings of VNIs, the associated MAC addresses, and IP addresses.

== Checking VTEP (VXLAN Tunnel Endpoints) Neighbors ==
To see the VTEP neighbor information, including the status and remote IPs of other VXLAN devices:

<nowiki>
show vxlan neighbors
</nowiki>

This command gives you the list of remote VTEP peers, their tunnel states, and additional statistics.

== Checking MAC Address Table for VXLAN ==
To view the MAC address table for VXLAN:

<nowiki>
show mac address-table vxlan
</nowiki>

This command will display MAC address learning entries for VXLAN, allowing you to check if MAC addresses are being correctly learned or flooded.

== Checking Routing Table for VXLAN ==
To check the IP routing table for VXLAN:

<nowiki>
show ip route vxlan
</nowiki>

This will show you the IP routes for VXLAN and their associated next hops.

== Verifying VXLAN Configuration Consistency ==
To verify that your VXLAN configuration is consistent across the device:

<nowiki>
show running-configuration | section vxlan
</nowiki>

This command filters the running configuration to display only the VXLAN-related settings, making it easier to spot inconsistencies.

== Checking Layer 2 Overlay Status ==
To check the status of the Layer 2 overlay and ensure that VXLAN segments are functioning:

<nowiki>
show ethernet-switching table vxlan
</nowiki>

This will show the Ethernet switching table for VXLAN and indicate whether there are any issues with the Layer 2 forwarding over the VXLAN network.

== VXLAN BGP EVPN Status ==
To check the status of VXLAN BGP EVPN (Border Gateway Protocol Ethernet Virtual Private Network), including routes and neighbors:

<nowiki>
show bgp l2vpn evpn
</nowiki>

This will show BGP EVPN status, including the advertised routes and BGP neighbor information specific to VXLAN.

== Checking VXLAN MTU (Maximum Transmission Unit) ==
To check the VXLAN MTU settings and ensure they are configured correctly for the encapsulation overhead:

<nowiki>
show system mtu
</nowiki>

This command helps to verify that the MTU is sufficient for VXLAN encapsulation and avoid issues like packet fragmentation.

== Verifying the VXLAN Data Plane ==
To verify the VXLAN data plane and check for any dropped packets or other issues:

<nowiki>
show interface Vxlan1 counters
</nowiki>

This will show detailed statistics on the VXLAN interface, including the number of packets sent/received and any errors or drops.

== Troubleshooting VXLAN Bridging ==
If you're facing issues with VXLAN bridging, you can check the bridging status:

<nowiki>
show bridging vxlan
</nowiki>

This will display the status of VXLAN bridging, which helps in troubleshooting Layer 2 bridging problems within a VXLAN overlay.

== Debugging VXLAN Issues ==
For deeper troubleshooting, use the following command to enable debugging for VXLAN:

<nowiki>
debug vxlan
</nowiki>

This command provides detailed debug information for VXLAN-related events, such as tunnel establishment and traffic forwarding.

== Checking VTEP-to-VTEP Connectivity ==
To check VTEP-to-VTEP connectivity at the network layer, use the following command:

<nowiki>
ping vxlan <remote VTEP IP>
</nowiki>

This command will send a ping request to the remote VTEP to ensure that the network path is active and reachable.

== Verifying ARP Table for VXLAN ==
To verify ARP entries for VXLAN:

<nowiki>
show arp
</nowiki>

This shows the ARP table entries for VXLAN and can help identify ARP issues or mismatches that could cause VXLAN traffic to fail.

== Verifying VXLAN with BGP Multicast ==
If using VXLAN with multicast for BGP, you can check multicast group membership:

<nowiki>
show ip mroute
</nowiki>

This will show multicast routing information and verify if multicast is functioning correctly for VXLAN.

== Checking VRF for VXLAN ==
If VXLAN is configured within a VRF, use the following command to show VRF-specific VXLAN information:

<nowiki>
show vrf VXLAN
</nowiki>

This command displays VRF-specific VXLAN details, including interfaces, IP addresses, and routing information.

== Monitoring VXLAN Traffic Flow ==
For monitoring traffic flows across VXLAN, the `flow-collector` command is useful:

<nowiki>
show flow-collector vxlan
</nowiki>

This command will display VXLAN-related traffic flow information, which is helpful in diagnosing performance or congestion issues in the VXLAN network.