HP 1920 does not turn on ICMP redirect

[ewgenik]

HP 1920 does not turn on ICMP redirect

I enter in the CLI "ip redirects enable" - "Error: The operation is not supported."

I tried on 1920-24G and 1920-8G

Syntax okay -

[HP 1920G Switch]ip redirects ?
  enable  Enable the function

What's the trouble?

[16again]

Officially, CLI is not supported.  You're lucky when functions present in CLI but not in data sheet work....like RIP and OSPF

But do you really really need redirect?
-Sending a redirect packet costs switch CPU,  just routing to correct gateway is done in switch hardware at wire speed.
-Some hosts don't like redirect and keep sending traffic to wrong gateway. This might overwhelm HP1920 with huge amount of redirects to send.
-redirect is for /32 routes only.  For each new destination IP , a redirect needs to be sent, adding a /32 route to host route table
-What's the gain for redirected host directly connected to 1920?  With redirect, the switch will switch, without redirect, the switch will route at same speed. There's no shorter path.