Greetings,
I am trying to setup a ppp connection via telephone (serial port modem connected to comport) line to a ppp dialin server (Windows 2000)
but Im unable to set the MTU/MRU settings and Im also always connecting at 9600 baud rate not more (I don`t thik it is because of the UART chip or so).
A. 0 R name=“asdf” mtu=536 mru=536 port=modem user=“administrator” password=“" profile=default phone="”
tone-dial=no modem-init=“atx3” null-modem=no dial-on-demand=no add-default-route=no use-peer-dns=no
allow=mschap2,mschap1,chap,pap
com1 port.
B. 0 name=“modem” used-by=“PPP <*>” baud-rate=38400 data-bits=8 parity=none stop-bits=1 flow-control=hardware
Here is what I get from tcpdump when i connect to the server ;
tcpdump: listening on eth1
00:51:28.669598 10.11.4.109.1262 > hostt.999: S 2560622129:2560622129(0) win 64240 <mss 1380,nop,nop,sackOK> (DF)
00:51:28.669672 host.999 > 10.11.4.109.1262: R 0:0(0) ack 2560622130 win 0 (DF)
00:51:29.479157 10.11.4.109.1262 > host.999: S 4053575422:4053575422(0) win 64240 <mss 1380,nop,nop,sackOK> (DF)
00:51:29.479228 host.999 > 10.11.4.109.1262: R 0:0(0) ack 1492953294 win 0 (DF)
00:51:30.687953 10.11.4.109.1262 >host.999: S 4156976973:4156976973(0) win 64240 <mss 1380,nop,nop,sackOK> (DF)
00:51:30.688003 host.999 > 10.11.4.109.1262: R 0:0(0) ack 1596354845 win 0 (DF)
The Mikrotik box (10.11.4.109) should set the MTU of the outgoing interface which i set at 536 + headers = 576 not 1380 ?
Also is it possible for PPP callback feature to work in the future cause it`s very cool and a lot of people use it 
I put a post ago asking about the possibility of putting a bandwidth description to ethernet/wifi interfaces and put that value to a snmp mib so that value (bw description) will appear in mrtg/rrd graphs not 100mbps or 1gbps for 128kbp line 
Regards,