• Port number on which transceiver is installed.
• Type of transceiver.
• Product number — Includes revision letter, such as A, B, or C. If no revision letter follows a product number,
this means that no revision is available for the transceiver.
• Part number — Allows you to determine the manufacturer for a specified transceiver and revision number.
• For a non-HPE switches installed transceiver (see line 23 of "The show tech transceivers command"
example), no transceiver type, product number, or part information is displayed. In the Serial Number field,
non-operational is displayed instead of a serial number.
• The following error messages may be displayed for a non-operational transceiver:
◦ Unsupported Transceiver. (SelfTest Err#060)
◦ This switch only supports revision B and above transceivers.
◦ Self test failure.
◦ Transceiver type not supported in this port.
◦ Transceiver type not supported in this software version.
◦ Not an HPE Switch Transceiver.
Jumbo frames
The maximum transmission unit(MTU) is the maximum size IP frame the switch can receive for Layer 2 frames
inbound on a port. The switch drops any inbound frames larger than the MTU allowed on the port. Ports operating
at a minimum of 1 Gbps can accept forward frames of up to 9220 bytes (including four bytes for a VLAN tag)
when configured for jumbo traffic. You can enable inbound jumbo frames on a per-VLAN basis. That is, on a
VLAN configured for jumbo traffic, all ports belonging to that VLAN and operating at a minimum of 1 Gbps allow
inbound jumbo frames of up to 9220 bytes.
Operating rules
• Required port speed: This feature allows inbound and outbound jumbo frames on ports operating at a
minimum of 1 Gbps.
• GVRP operation: A VLAN enabled for jumbo traffic cannot be used to create a dynamic VLAN. A port
belonging to a statically configured, jumbo-enabled VLAN cannot join a dynamic VLAN.
• Port adds and moves: If you add a port to a VLAN that is already configured for jumbo traffic, the switch
enables that port to receive jumbo traffic. If you remove a port from a jumbo-enabled VLAN, the switch
disables jumbo traffic capability on the port only if the port is not currently a member of another jumbo-enabled
VLAN. This same operation applies to port trunks.
• Jumbo traffic sources: A port belonging to a jumbo-enabled VLAN can receive inbound jumbo frames
through any VLAN to which it belongs, including non-jumbo VLANs. For example, if VLAN 10 (without jumbos
enabled) and VLAN 20 (with jumbos enabled) are both configured on a switch, and port 1 belongs to both
VLANs, port 1 can receive jumbo traffic from devices on either VLAN. For a method to allow only some ports in
a VLAN to receive jumbo traffic, see Configuring a maximum frame size on page 137.
Chapter 6 Port Traffic Controls 133
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