S4048T-ON VLAN Interface LineSpeed 100 Mbit

Question

I have a VLAN interface configured as follows:

interface Vlan 84
 description 8C
 ip address 172.25.84.2/24
 tagged Port-channel 103
 untagged TenGigabitEthernet 1/1-1/48
 no shutdown

This works but when I run a show interface vlan 84 it shows that my LineSpeed is set to 100Mbit. This is a 10GB switch so I would have thought that by default a vlan interface would be set to that speed. Do I have to manually configure the speed in the config? How? Or is there something else going one here?

DDA_8C-A#sh int vlan 84
Vlan 84 is up, line protocol is up
Description: 8C
Address is e4:f0:04:4e:70:ee, Current address is e4:f0:04:4e:70:ee
Interface index is 1275111424
Internet address is 172.25.84.2/24
Mode of IPv4 Address Assignment : MANUAL
DHCP Client-ID(61): e4f0044e70ee
MTU 1554 bytes, IP MTU 1500 bytes
LineSpeed 100 Mbit
ARP type: ARPA, ARP Timeout 04:00:00
Last clearing of "show interface" counters 4w0d18h
Queueing strategy: fifo
Time since last interface status change: 4w0d18h
Input Statistics:
    14622855666 packets, 4249030144641 bytes
Output Statistics:
    18385293864 packets, 4776866672809 bytes

Thanks

Scott

Scott_Ai · Answer

Thanks, there are a variety of devices connected, most at either 1Gb or 10Gb but there is at least one printer connected at 100Mb so that must be it.

Good to know that it isn't the actual speed of the interface but in my opinion it is still a bug. I have tried a few different monitoring tools and they all alert on interface over utilization. This is a pain as I have to turn off monitoring on those VLAN interfaces as the speed is reported incorrectly.

Networking General

S4048T-ON VLAN Interface LineSpeed 100 Mbit

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