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Cat 4510R slot 10

Hello all,

I am using a Cat 4510R, with supV, and want to use linecard WS-X4148-RJ21 in slot 10.

I receive an error: C4K_CHASSIS-3-LINECARDNOTVALIDINSLOT, but I cant find anything on that slot 10 is different from the other slots. Only slot 1 and 2 are for supervisor, the other slots should support all the cards.

Does anyone has had the same problem?

Note that there is a small white vertical bar on the left of the slot, like there are 2 blue bars on slot 1 and 2.


Re: Cat 4510R slot 10

The supervisor engine identified the type, but the switching module cannot be supported in this slot due to the insufficient number of backplane ports in this slot. This is an informational message only. No action is required. If possible, move the switching module to another slot, and use a supported module in the original slot.

Community Member

Re: Cat 4510R slot 10


The issue is that you are using a SUP V. If you were using a SUPV-10GE not only will this give you better performance but it will also allow you to use the '10th Slot'...:-)

*** There is ONE senerio where the 'SLOT 10' can become a "Flex-Slot" when using a SUP-V-10GE module. Please read the bottom of the post...

here are the links that explain.... - wp1066964

Deploying 10-Gigabit Ethernet and a Gigabit Ethernet SFP Ports


Note On a Catalyst 4510R series switch, if you enable both the 10-Gigabit Ethernet and Gigabit Ethernet SFP uplink ports, you must re-boot the switch. On the Catalyst 4503, 4506, and 4507R series switches, this capability is automatically enabled.


Prior to Cisco Release 12.2(25)SG, the Cisco Catalyst 4500 Supervisor Engine V-10GE allowed you to enable either the dual wire-speed 10-Gigabit Ethernet ports, or four alternatively wired Gigabit Ethernet SFP uplink ports. With Cisco Release 12.2(25)SG, you can simultaneously deploy the dual 10 Gigabit Ethernet ports and the four Gigabit Ethernet SFP ports. This capability is supported on the Catalyst 4503, Catalyst 4506, and Catalyst 4507R chassis.

When deploying a Catalyst 4510R chassis, one of three configurations is supported:

? Enable the dual 10 -Gigabit Ethernet ports (X2 optics) only.

? Enable the four Gigabit Ethernet ports (SFP optics) only.

? Enable both the dual 10 Gigabit Ethernet and the four Gigabit Ethernet ports, with the understanding that the tenth slot (Flex-Slot) will only support a 2-port gigabit interface converter (GBIC) line card (WS-X4302-GB) when in this mode.

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