Patton electronic SmartNode 4110 Series ユーザーズマニュアル

IP interface configuration task list

SmartWare Software Configuration Guide 

Mode: Interface

Example: Router advertisement broadcast message 

The following example shows how to enable sending router advertisement broadcast messages on IP interface 
lan. Use the following commands in IP context configuration mode.

node(ctx-ip)[router]#interface lan
node(if-ip)[lan]#icmp router-discovery

All interfaces have a default MTU packet size. You can adjust the IP MTU size so that the IP packet that 
exceeds the MTU set for an interface is exceeded. The default MTU packet size is set to 1500 for an interface. 
In cases where fragmentation is not allowed along the IP connection, forcing a reduction of the MSS (maxi-
mum segment size) is the only viable solution.

All devices on a physical medium must have the same protocol MTU in 
order to operate accurately. 

Procedure: To set the MTU packet size or the MSS to size on the interface name

Mode: Interface

Example: Defining the MTU of the interface 

Selects the interface name for ICMP message pro-
cessing configuration

node(if-ip)[name]# icmp router-discovery Enables to send router advertisement broadcast 

messages

node(ctx-ip)[router]#interface name Selects the interface name for ICMP message processing 

configuration

Sets the IP MTU packet size to size of the interface name. 
The MTU packet size value must be in the range from 48 
to 1500.

Limits to the MSS (Maximum Segment Size) in TCP SYN 
packets to mss or to MTU (Maximum Transmit Unit) - 40 
Bytes, if ‘mtu’ is used. ‘rx’ applies to packets which 
arrive inbound at this IP interface, ‘tx’ to packets which 
leave outbound of this IP interface.
It is recommended to use ‘mtu’ inbound and outbound.