Catalyst 4500X Unidirectional Link

[Bernhard Mayer]

Hi all,

I want to create a unidirectional Link between two catalyst 4500X.

Switch 1:

interface TenGigabitEthernet1/1
 unidirectional receive-only
end

Switch 2:

interface TenGigabitEthernet1/2
 unidirectional send-only
end

Problem:

Switch 1 --> Port notconnect

Switch 2 --> Port connected

Do I need to configure any more on the switch 1 te1/1 to bring up the interface?

I have changed the 10G spf+ transceiver + cable --> same problem.

When I use 1G spf transceiver instead of 10G spf+ on the same ports --> no problem (???)

IOS Version:  03.05.00.E

Thanks for your support,

Regards,

Bernhard

[Madhukrishnan Gopinathan Nair]

Hi Bernhard,

Does the port stay up without uni directional configuration?

Also share sh interface <> unidirectional

Thanks,

Madhu

[Bernhard Mayer]

Hi Madu

Ports stay up without uni directional config.

Switch1:
Switch1 #sh interfaces te1/1 unidirectional
Unidirectional configuration mode: receive only
CDP neighbour unidirectional configuration mode: send only
Switch1#

Switch 2:
Switch2#sh interfaces te1/2 unidirectional
Unidirectional configuration mode: send only
CDP neighbour unidirectional configuration mode: off
Switch2#

Thanks,
Bernhard

[Madhukrishnan Gopinathan Nair]

Hi,

Can you please share the interface config from both the sides.

Regards,

Madhu

[Bernhard Mayer]

Switch 1:

interface TenGigabitEthernet1/1
 (no) speed nonegotiate
 unidirectional receive-only
end

Switch 2:

interface TenGigabitEthernet1/2
 (no) speed nonegotiate
 unidirectional send-only
end

[Madhukrishnan Gopinathan Nair]

Ok. Quite not sure but can you hardcode speed and duplex to see if it helps?

Also worth checking on a diffrent port with a differnt SFP/Cable etc.

Thanks,

Madhu

[Bernhard Mayer]

I can't hardcode speed and duplex on a port with 10Ge sfp+ transceiver.

On different ports same problem (1GE sfp works, 10GE sfp+ doesn't works)

Thanks,

Bernhard

[acampbell]

Hi Bernhard.

What are the results of the follwing command on both switches:-

show interface ten 1/1 unidirectional

&

show interface ten 1/2 unidirectional

Regards
Alex

[Bernhard Mayer]

Hi Alex

Switch1:
Switch1 #sh interfaces te1/1 unidirectional
Unidirectional configuration mode: receive only
CDP neighbour unidirectional configuration mode: send only
Switch1#

Switch 2:
Switch2#sh interfaces te1/2 unidirectional
Unidirectional configuration mode: send only
CDP neighbour unidirectional configuration mode: off
Switch2#

Regards,

Bernhard