"ip routing" command on SG300 switch

What does "ip routing" do on the CLI on the SG300?
When I do this, I see it enables ip forwarding, but there is no mention of this in the CLI manual.  I'm just trying to figure out what I would use this for, and if I should leave it enabled, or disable it.
I have several different SG300 switches in L3 mode, and they are set up in a multi-vlan environment...
Thanks,
scott

Ah, ok, thanks. I guess that was pretty obvious, now that I know the answer.
The "ip routing" command isn't mentioned anywhere in the CLI documentation, but I guess if I'd thought about it a little longer, I may have come to the same conclusion.
Thanks Tom. 

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      2  Centralized Forwarding Card WS-F6700-CFC       SAL09159C8T  2.0    Ok
      6  Policy Feature Card 3       WS-F6K-PFC3BXL     SAL10360CJ0  1.8    Ok
      6  MSFC3 Daughterboard         WS-SUP720          SAL10360GNX  2.5    Ok
    the show version is like this:
    System image file is "bootdisk:c7600s72033-adventerprisek9-mz.122-33.SRC1.bin"
    We tryied to set the value of the ipv4 FIB TCAM to 720k with this command:
    mls cef maximum-routes ip 720
    and then to save the configuration we used the "write" command. This was the output after we wrote the configuration:
    FIB TCAM maximum routes :
    =======================
    Current :-
     IPv4 + MPLS         - 512k (default)
     IPv6 + IP Multicast - 256k (default)
    User configured :-
     IPv4                - 720k
     MPLS                - 16k (default)
     IPv6 + IP Multicast - 144k (default)
    Upon reboot :-
     IPv4                - 720k
     MPLS                - 16k (default)
     IPv6 + IP Multicast - 144k (default)
    so we reloaded the router to get the new value.
    when the router was up again it start to reload each 4 minutes. The FIB TCAM value was:
    show mls cef maximum-routes
    Reload scheduled for 13:50:09 DST Wed Aug 13 2014 (in 2 minutes and 51 seconds)
    Reload reason: FIB Protocol Allocation mismatchFIB TCAM maximum routes :
    =======================
    Current :-
     IPv4 + MPLS         - 512k (default)
     IPv6 + IP Multicast - 256k (default)
    User configured :-
     IPv4 + MPLS         - 512k (default)
     IPv6 + IP Multicast - 256k (default)
    Upon reboot :-
     IPv4 + MPLS         - 512k (default)
     IPv6 + IP Multicast - 256k (default)
    We know that our cisco is able to handle up to 1M of ipv4 routes inside the TCAM but we cannot set more than 512k ipv4 routes.
    Why the router doesn't accept the new value?
    Thanks
    http://www.cisco.com/c/en/us/support/docs/switches/catalyst-6500-series-switches/117712-problemsolution-cat6500-00.html
    http://www.cisco.com/c/en/us/support/docs/switches/catalyst-6500-series-switches/116132-problem-catalyst6500-00.html
    https://supportforums.cisco.com/discussion/12250356/recommended-value-7600-ipv4-fib-tcam

    Hi Paolo,
    #sho ver
    Cisco IOS Software, s72033_rp Software (s72033_rp-ADVENTERPRISEK9_WAN-M), Version 12.2(33)SXI13, RELEASE SOFTWARE (fc3)
    Technical Support: http://www.cisco.com/techsupport
    Copyright (c) 1986-2014 by Cisco Systems, Inc.
    Compiled Tue 11-Mar-14 04:53 by prod_rel_team
    ROM: System Bootstrap, Version 12.2(17r)S2, RELEASE SOFTWARE (fc1)
     punk.gs2 uptime is 17 hours, 55 minutes
    Uptime for this control processor is 17 hours, 55 minutes
    Time since punk.gs2 switched to active is 17 hours, 54 minutes
    System returned to ROM by reload at 22:32:30 BST Mon Sep 1 2014 (SP by reload)
    System restarted at 22:35:24 BST Mon Sep 1 2014
    System image file is "disk0:s72033-adventerprisek9_wan-mz.122-33.SXI13.bin"
    Last reload reason: Reload Command
    This product contains cryptographic features and is subject to United
    States and local country laws governing import, export, transfer and
    use. Delivery of Cisco cryptographic products does not imply
    third-party authority to import, export, distribute or use encryption.
    Importers, exporters, distributors and users are responsible for
    compliance with U.S. and local country laws. By using this product you
    agree to comply with applicable laws and regulations. If you are unable
    to comply with U.S. and local laws, return this product immediately.
    A summary of U.S. laws governing Cisco cryptographic products may be found at:
    http://www.cisco.com/wwl/export/crypto/tool/stqrg.html
    If you require further assistance please contact us by sending email to
    [email protected].
    cisco WS-C6504-E (R7000) processor (revision 2.0) with 983008K/65536K bytes of memory.
    Processor board ID FOX11270F1B
    SR71000 CPU at 600Mhz, Implementation 0x504, Rev 1.2, 512KB L2 Cache
    Last reset from power-on
    11 Virtual Ethernet interfaces
    50 Gigabit Ethernet interfaces
    1917K bytes of non-volatile configuration memory.
    8192K bytes of packet buffer memory.
    65536K bytes of Flash internal SIMM (Sector size 512K).
    Configuration register is 0x2102
    #remote command switch show version
    Cisco IOS Software, s72033_sp Software (s72033_sp-ADVENTERPRISEK9_WAN-M), Version 12.2(33)SXI13, RELEASE SOFTWARE (fc3)
    Technical Support: http://www.cisco.com/techsupport
    Copyright (c) 1986-2014 by Cisco Systems, Inc.
    Compiled Tue 11-Mar-14 05:09 by prod_rel_team
    ROM: System Bootstrap, Version 8.5(4)
     punk.gs2 uptime is 17 hours, 55 minutes
    Time since punk.gs2 switched to active is 17 hours, 55 minutes
    System returned to ROM by reload at 22:32:30 BST Mon Sep 1 2014
    System restarted at 22:34:17 BST Mon Sep 1 2014
    System image file is "disk0:s72033-adventerprisek9_wan-mz.122-33.SXI13.bin"
    Last reload reason: Reload Command
    cisco Catalyst 6000 (R7000) processor with 983008K/65536K bytes of memory.
    Processor board ID FOX11270F1B
    SR71000 CPU at 600Mhz, Implementation 0x504, Rev 1.2, 512KB L2 Cache
    Last reset from s/w reset
    50 Gigabit Ethernet interfaces
    1917K bytes of non-volatile configuration memory.
    8192K bytes of packet buffer memory.
    500472K bytes of ATA PCMCIA card at slot 0 (Sector size 512 bytes).
    65536K bytes of Flash internal SIMM (Sector size 512K).
    Configuration register is 0x2102
    Hope that helps.

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