Netonix Forums

I'd like to see adjustments for "MTU" and "do not fragment" in the Ping Tool.

I've been chasing a possible MTU issue and it would be easier to run some tests from the switch itself in some cases.

I do not follow you, you can change the MTU on each port on the PORTS TAB ????

The default is 1528 MTU

I don't want to change the MTU setting on the switch, I want to change the size of the packet used to ping across the network to another site. If I set the ping size to 1500 and "do not fragment" and ping across the network, it should come back fine. If there are any MTU issues, I would get a reply that says something about fragmentation being necessary, and I could test to various locations to help identify it.

I'm about to head out to put a MikroTik at one of the Netonix-only sites to be able to do this as a quick fix.

So I think your asking to be able to ping from the switch and set the ping packet size sent by the switch?

Why not go to the Device/Console
Type in "cmd" and press [Enter] and drop to Linux shell then use the Linux Ping command?
Then when finished type in "EXIT" and press [Enter] to return to our console, "exit" and [Enter] again close console connection in web UI.

CLICK IMAGE BELOW TO VIEW FULL SIZE


http://www.sanfoundry.com/10-ping-comma ... les-linux/

DESCRIPTION
PING (Packet INternet Groper) command is the best way to test connectivity between two nodes. Whether it is Local Area Network (LAN) or Wide Area Network (WAN). Ping use ICMP (Internet Control Message Protocol) to communicate to other devices. You can ping host name of ip address using below command.
ping uses the ICMP protocol’s mandatory ECHO_REQUEST datagram to elicit an ICMP ECHO_RESPONSE from a host or gateway. ECHO_REQUEST datagrams (“pings”) have an IP and ICMP header, followed by a struct timeval and then an arbitrary number of “pad” bytes used to fill out the packet.
SYNOPSIS
ping -s [-d] [-l] [-L] [-n] [-r] [-R] [-v] [ -i interface_address ] [-I interval] [-t ttl] host [packetsize] [count]
OPTIONS :
-d
Set the SO_DEBUG socket option.
-l
Loose source route. Use this option in the IP header to send the packet to the given host and back again. Usually specified with the -R option.
-L
Turn off loopback of multicast packets. Normally, if there are members in the host group on the out- going interface, a copy of the multicast packets will be delivered to the local machine.
-n
Show network addresses as numbers. ping normally displays addresses as host names.
-r
Bypass the normal routing tables and send directly to a host on an attached network. If the host is not on a directly-attached network, an error is returned. This option can be used to ping a local host through an interface that has been dropped by the router daemon.
-R
Record route. Sets the IP record route option, which will store the route of the packet inside the IP header. The contents of the record route will only be printed if the -v option is given, and only be set on return packets if the target host preserves the record route option across echos, or the -l option is given.
-v
Verbose output. List any ICMP packets, other than ECHO_RESPONSE, that are received.
-i interface_address
Specify the outgoing interface address to use for multicast packets. The default interface address for multicast packets is determined from the (unicast) routing tables.
-I interval
Specify the interval between successive transmissions. The default is one second.
-t ttl
Specify the IP time to live for unicast and multicast packets. The default time to live for unicast packets is set with ndd (using the icmp_def_ttl variable). The default time to live for multicast is one hop.
host
The network host.
packetsize
Specified size of packetsize. Default is 64.
count
Amount of times to send the ping request.

sirhc wrote:So I think your asking to be able to ping from the switch and set the ping packet size sent by the switch?

Yes, that is what I am asking, but also to set "Do Not Fragment".

Thank you for the details above, but the built-in tool does not appear to have a do-not-fragment option.

Eric Stern (The programmer) is on vacation to Australia until the end of the month.

Maybe wait until early February and make another post here directed at Eric asking for what you want.

Will do.

It's busybox ping that don't cover all option of the ping utility. A simple exemple is that busybox ping don't support interval. What would need to be done is remove ping from busybox and add the true ping-utils from unix. I use to do that on my OpenWRT custom image since I use interval a lot to test link.