uRPF (ip verify unicast reachable) command not found on Cat3550

[johnyoon75]

Hello,

I can't find "ip verify unicast ~~" command on cat3550 with 12.1(22)EA1a.

Os code name is c3550-i5q3l2-mz.121-22.EA1a.

but i found that command on Cat3550 with 12.1(11)EA1, it's code name is c3550-i5q3l2-mz.121-11.EA1.

Cisco do not support higher version?

Regard,

John.

[Bobby Thekkekandam]

Hi John,

uRPF has never been supported on the 3550. The hardware cannot perform the function. The command was included in the CLI in older versions, but was eventually removed to prevent confusion.

HTH,

Bobby

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[johnyoon75]

Thnak you for your response.

The older version works properly? such as Version 12.1(11)EA1...or not? just can issue on CLI?

Regards,

John.

[Bobby Thekkekandam]

Hi John,

It *may* work properly, but can also cause undesired results, such as unexpected reloads, or may not work reliably. I would recommend against configuring it.

HTH,

Bobby