Cisco Nexus 1000V, Troubleshooting Manual, Page: 253 / 280

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Cisco Nexus 1000V Troubleshooting Guide, Release 5.2(1)SV3(1.1)
OL-31593-01
Chapter 25 VXLANs
VXLAN Troubleshooting Commands
Supported Features
This section includes the following topics:
•
Jumbo Frames, page 25-9
• Disabling the VXLAN Feature Globally, page 25-9
Jumbo Frames
Jumbo frames are supported by the Cisco Nexus 1000V if there is space on the frame to accommodate
the VXLAN encapsulation overhead of at least 50 bytes, and the physical switch/router infrastructure
has the capability to transport these jumbo-sized IP packets.
Disabling the VXLAN Feature Globally
As a safety precaution, do not use the no feature segmentation command if there are any ports associated
with a VXLAN port profile. You must remove all associations before you can disable this feature. You
can use the no feature segmentation command to remove all the VXLAN bridge domain configurations
on the Cisco Nexus 1000V.
VXLAN Troubleshooting Commands
Use the following commands to display VXLAN attributes.
This section contains the following topics:
•
VSM Commands, page 25-9
• VXLAN Gateway Commands, page 25-11
VSM Commands
You can use the commands in this section to troubleshoot problems related to the VSM.
Command Purpose
show system internal seg_bd info segment
10000 Displays the ports belonging to a specific
segment.
See Example 25-1 on page 25-10
show system internal seg_bd info port
vethernet 1 Displays the vEthernet bridge domain
configuration.
See Example 25-2 on page 25-10
show system internal seg_bd info port ifindex
0x1c000050 Displays the vEthernet bridge configuration with
ifindex as an argument.
See Example 25-3 on page 25-10
show system internal seg_bd info port_count Displays the total number of bridge domain ports.
See Example 25-4 on page 25-10