On Thu, 30 Jun 2005 00:59:17 +0000 (UTC) James wrote: > Hello, > > I often use telnet to connect to (embedded) devices on a local network, > devices which do not support ssh. On both Debian and Gentoo systems I > just delete the default route out and set a second (sub)interface on > the ethernet port like this: > > The default setting is obtained from the /etc/conf.d/net file: > iface_eth0="192.168.2.23 broadcast 192.168.2.255 netmask 255.255.255.0" > > So I use these commands to set up an additional interface that > matches the defauld class C (/24) network that the device manufacturer > sets as a default. For example a device might be given 192.168.15.1: > > route delete default > ifconfig eth0:0 inet 192.168.15.23 netmask 255.255.255.0 broadcast > 192.168.15.255 > > ifconfig yeilds: > eth0 Link encap:Ethernet HWaddr 00:90:F5:2B:CB:13 > inet addr:192.168.2.23 Bcast:192.168.2.255 Mask:255.255.255.0 > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 > RX packets:590024 errors:0 dropped:0 overruns:0 frame:0 > TX packets:80894 errors:0 dropped:0 overruns:0 carrier:0 > collisions:4089 txqueuelen:1000 > RX bytes:153811888 (146.6 Mb) TX bytes:5882603 (5.6 Mb) > Interrupt:11 Base address:0x2000 > > eth0:0 Link encap:Ethernet HWaddr 00:90:F5:2B:CB:13 > inet addr:192.168.15.23 Bcast:192.168.15.255 Mask:255.255.255.0 > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 > RX packets:590024 errors:0 dropped:0 overruns:0 frame:0 > TX packets:80894 errors:0 dropped:0 overruns:0 carrier:0 > collisions:4089 txqueuelen:1000 > RX bytes:153811888 (146.6 Mb) TX bytes:5882603 (5.6 Mb) > Interrupt:11 Base address:0x2000 > > lo Link encap:Local Loopback > inet addr:127.0.0.1 Mask:255.0.0.0 > UP LOOPBACK RUNNING MTU:16436 Metric:1 > RX packets:2673 errors:0 dropped:0 overruns:0 frame:0 > TX packets:2673 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:0 > RX bytes:269579 (263.2 Kb) TX bytes:269579 (263.2 Kb) > > My actual question may or may not be related to the use of a sub interface. > When I telnet into the devices from a similarly setup Debian system, I get > a very fast response. When I telnet into the devices from a gentoo system, > it takes 30-50s (estimate) for the login prompt response. It's almost as > those telnet is set up to use ssh, but times out and then defaults to > real telnet? > > 1. If this is not what's happening, what is to cause telnet to react so > slowly?
probably dns - most servers do a reverse dns lookup when a client connects, and if the lookup does not work the timeout can be quite noticeably long. > > 2. Regardless of what's happening, how to I fix? When I use telnet, I > want telnet, nice and fast, not ssh or any other protocol. > > Ideas on how to fix telnet on Gentoo? you don't need to if i am right. > > James > > > > -- > gentoo-user@gentoo.org mailing list -- Nick Rout -- gentoo-user@gentoo.org mailing list
