Boot 3750 from tftp

[Pavel Doronin]

Tell me please is there any way to boot catalyst 3750 (3560, 2960) switch from tftp?

[Leo Laohoo]

Thanks for the ratings.

Catalyst 3750 or 3560 switches with a 16-MB flash memory can experience problems due to flash memory constraints, especially if they are using larger size images, such as c3750-ipservicesk9-tar, c3560-ipservicesk9-tar, c3750-ipbasek9-tar, or c3750-ipbasek9-tar images. These are the affected switches: 
 Catalyst 3560: WS-C3560-24PS and WS-C3560-48PS 
 Catalyst3750: WS-C3750-24PS, WS-C3750-24TS, WS-C3750-48PS, WS-C3750-48TS, WS-3750G-24T, WS-C3750G-12S, WS-C3750G-24TS, WS-C3750G-16TD 
 The workaround for these switches is to use the corresponding lm images, such as the c3750-ipserviceslmk9-tar or c3560-ipserviceslmk9-tar images, which require less memory. In future releases, images are expected to grow more in size, requiring more need for the lm images.

[Pavel Doronin]

What is lm image? I did not see it befor.

[Leo Laohoo]

What is lm image? I did not see it befor.

Yes.  This is a new kind.  The "l" simply means "lite", filesize wise.  The IOS BIN file is the same but the HTML files have been cut down to fit into a 3560/3750 with 16 mb flash.

[Leo Laohoo]

Long time ago i boot 2500 router directly from tftp, because ios image was bigger than flash on 2500 router and it works fine!
I try to find the way to do this on Cat3750.

If you say 3750E or 3750X there's another way to boot:  USB

[Pavel Doronin]

Thanks for help!

Now i think there is no way to directly boot Cat3750 (not E and not X) from tftp.

[THOMAS SURBER]

The 3750E can boot from TFTP

Ethernet cable in the MGMT Ethernet port.

Set Variables in ROMMON

IP_ADDR=x.x.x.x/m.m.m.m.m

DEFAULT_ROUTER=x.x.x.x

boot tftp://x.x.x.x/bootfile.bin

[zharrison]

Which port is the management

port?