OpenWrt Forum Archive

Post #1

Giammin

17 Nov 2005, 16:45

i use my wrt54gs (v1.1 whiterussaian jffs rc3)as adsl router so i have on wan interface an adsl ericson modem (hm220dp)

everytime i boot i find on loagread

Couldn't increase MTU to 1500

but i set mtu to 1492 becouse my adsl provider want this mtu

Jan  1 01:00:23 (none) kern.info pppd[299]: PPP session is 2326
Jan  1 01:00:23 (none) user.info : PPP session is 2326
Jan  1 01:00:23 (none) kern.info pppd[299]: Using interface ppp0
Jan  1 01:00:23 (none) kern.notice pppd[299]: Connect: ppp0 <--> vlan1
Jan  1 01:00:23 (none) kern.warn pppd[299]: Couldn't increase MTU to 1500
Jan  1 01:00:23 (none) kern.warn pppd[299]: Couldn't increase MRU to 1500
Jan  1 01:00:23 (none) user.info : Using interface ppp0
Jan  1 01:00:23 (none) user.info : Connect: ppp0 <--> vlan1
Jan  1 01:00:23 (none) user.info : Couldn't increase MTU to 1500
Jan  1 01:00:23 (none) user.info : Couldn't increase MRU to 1500
Jan  1 01:00:23 (none) kern.warn pppd[299]: Couldn't increase MTU to 1500
Jan  1 01:00:23 (none) user.info : Couldn't increase MTU to 1500
Jan  1 01:00:23 (none) kern.notice pppd[299]: PAP authentication succeeded
Jan  1 01:00:23 (none) kern.notice pppd[299]: PAP authentication succeeded
Jan  1 01:00:23 (none) kern.notice pppd[299]: peer from calling number 00:03:11:62:00:05 authorized
Jan  1 01:00:23 (none) user.info : PAP authentication succeeded
Jan  1 01:00:23 (none) user.info : PAP authentication succeeded
Jan  1 01:00:23 (none) user.info : peer from calling number 00:03:11:62:00:05 authorized
Jan  1 01:00:23 (none) kern.notice pppd[299]: local  IP address 161.37.26.148
Jan  1 01:00:23 (none) user.info : local  IP address 161.37.26.148
Jan  1 01:00:23 (none) kern.notice pppd[299]: remote IP address 161.6.143.65
Jan  1 01:00:23 (none) user.info : remote IP address 161.6.143.65
Jan  1 01:00:23 (none) kern.notice pppd[299]: primary   DNS address 193.70.152.15
Jan  1 01:00:23 (none) user.info : primary   DNS address 193.70.152.15
Jan  1 01:00:23 (none) kern.notice pppd[299]: secondary DNS address 193.70.152.25
Jan  1 01:00:23 (none) user.info : secondary DNS address 193.70.152.25
Jan  1 01:00:24 (none) user.info : debug, Sending discover...
Jan  1 01:00:28 (none) user.info : info, No lease, forking to background.

(Last edited by Giammin on 17 Nov 2005, 16:46)

Post #2

florian_

17 Nov 2005, 19:10

Are you sure it is really 1492 ? It is set in wan_mtu.

Post #3

Giammin

17 Nov 2005, 20:22

yes i'm shure about my adsl provider mtu

i tryed to change ppp_mtu to 1500 but pppoe tells me that it isn't a good idea
i set wan_mtu to 1500 but nothing changes

Post #4

cabo

22 Nov 2005, 14:16

"Couldn't increase MRU to 1500" is just a warning that ppp could not increase the MTU to 1500 - it can't, because PPPoE uses 1492 (or s.th. else).
Just set your MTU to 1492 and ignore the warning.
(ppp_mtu=1492 see the OpenWRT FAQ -> PPPoE )

See "ifconfig ppp0" for your ppp0 MTU
(Do not change the MTU for "real" WAN Port, leave it at 1500)