> I can't find the meaning of the following commands,even if on the office 
> website:
> 
> set interface tag toSw1 toSw1 

commit 7be864ad0d8e3b139a277fb4a0234480f0cc3daa
Author: Dave Barach <d...@barachs.net>
Date:   Mon Nov 28 11:41:35 2016 -0500

    Add a 64-byte interface "tag" for vhost and tap interfaces
    
    This patch should dispose of spurious objections around interface tag
    requirements, currently in use as excuses not to support the vpp ML2
    plugin.
    
    Add "u8 tag[64];" to the sw_interface_details message sent by vpp to
    control-plane clients. Add u8 tag[64] to the create_vhost_user_if and
    tap_connect APIs.
    
    Added debug CLI to set/show/clear the interface tag on any vnet sw
    interface. Added the sw_interface_tag_add_del API to set/clear
    tags on any vnet sw interface.
    
    There can be no expectation of "tag atomicity" with respect to
    physical hardware. Vpp discovers devices before establishing a
    control-plane connection.
    
    This patch upload verifies using the csit oper-161128 branch
    
    Change-Id: If8520119e7a586c5ccf0fdda82484ac205622855
    Signed-off-by: Dave Barach <d...@barachs.net>


> 
> set interface mtu 1500 toSw1 

set interface mtu ?
  set interface mtu                        set interface mtu 
[packet|ip4|ip6|mpls] <value> <interface>

sets the maximum transmission unit for an interface. Eiher the L2 MTU, L3 MTU 
or per L3 protocol MTU.

> 
> set interface reassembly toSw1 on

set interface reassembly <interface-name> [on|off|ip4|ip6]

Normally IP reassembly is done by the destination host. This feature does 
in-path IP reassembly.

Cheers,
Ole
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