Telnet blank screen

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amosely00
Posts: 2
Joined: Mon Oct 09, 2017 3:16 pm

Telnet blank screen

Post by amosely00 » Mon Oct 09, 2017 3:18 pm

Hello All,

I have setup my lab and I am able to start my router\switches, however when I open telnet to them the screen comes up blank. I see the following in the output.

Oct 09 17:02:49 INFO: stopping fuser -k /opt/unetlab/tmp/0/34a4c0ab-fa89-4059-a820-c6ba7112e5a2/3 > /dev/null 2>&1

Oct 09 17:02:48 INFO: stopping fuser -k /opt/unetlab/tmp/0/34a4c0ab-fa89-4059-a820-c6ba7112e5a2/1 > /dev/null 2>&1

Oct 09 17:02:00 INFO: qemu pid is 27573

Oct 09 17:01:59 INFO: starting /opt/unetlab/wrappers/qemu_wrapper -T 0 -D 1 -t "Switch" -F /opt/qemu/bin/qemu-system-x86_64 -d 0 -- -nographic -device e1000,netdev=net0,mac=50:00:00:01:00:00 -netdev tap,id=net0,ifname=vunl0_1_0,script=no -device e1000,netdev=net1,mac=50:00:00:01:00:01 -netdev tap,id=net1,ifname=vunl0_1_1,script=no -device e1000,netdev=net2,mac=50:00:00:01:00:02 -netdev tap,id=net2,ifname=vunl0_1_2,script=no -device e1000,netdev=net3,mac=50:00:00:01:00:03 -netdev tap,id=net3,ifname=vunl0_1_3,script=no -smp 1 -m 768 -name Switch -uuid a0a87708-ef70-4b0f-a3f4-49aeb5ada2d6 -machine type=pc-1.0,accel=kvm -serial mon:stdio -nographic -nodefconfig -nodefaults -rtc base=utc > /opt/unetlab/tmp/0/34a4c0ab-fa89-4059-a820-c6ba7112e5a2/1/wrapper.txt 2>&1 &

Oct 09 17:01:59 INFO: CWD is /opt/unetlab/tmp/0/34a4c0ab-fa89-4059-a820-c6ba7112e5a2/1

Oct 09 17:01:59 ERROR: QEMU Arch is not set (80015).

Oct 09 17:01:59 INFO: tunctl -u unl0 -g root -t vunl0_1_3 2>&1

Oct 09 17:01:59 INFO: tunctl -u unl0 -g root -t vunl0_1_2 2>&1

Oct 09 17:01:59 INFO: tunctl -u unl0 -g root -t vunl0_1_1 2>&1

Oct 09 17:01:59 INFO: tunctl -u unl0 -g root -t vunl0_1_0 2>&1

Oct 09 17:01:33 INFO: stopping fuser -k /opt/unetlab/tmp/0/34a4c0ab-fa89-4059-a820-c6ba7112e5a2/1 > /dev/null 2>&1

Oct 09 17:01:15 INFO: starting /opt/unetlab/wrappers/qemu_wrapper -T 0 -D 3 -t "ASAv" -F /opt/qemu/bin/qemu-system-i386 -d 0 -- -nographic -device e1000,netdev=net0,mac=50:00:00:03:00:00 -netdev tap,id=net0,ifname=vunl0_3_0,script=no -device e1000,netdev=net1,mac=50:00:00:03:00:01 -netdev tap,id=net1,ifname=vunl0_3_1,script=no -device e1000,netdev=net2,mac=50:00:00:03:00:02 -netdev tap,id=net2,ifname=vunl0_3_2,script=no -device e1000,netdev=net3,mac=50:00:00:03:00:03 -netdev tap,id=net3,ifname=vunl0_3_3,script=no -device e1000,netdev=net4,mac=50:00:00:03:00:04 -netdev tap,id=net4,ifname=vunl0_3_4,script=no -device e1000,netdev=net5,mac=50:00:00:03:00:05 -netdev tap,id=net5,ifname=vunl0_3_5,script=no -device e1000,netdev=net6,mac=50:00:00:03:00:06 -netdev tap,id=net6,ifname=vunl0_3_6,script=no -device e1000,netdev=net7,mac=50:00:00:03:00:07 -netdev tap,id=net7,ifname=vunl0_3_7,script=no -smp 1 -m 2048 -name ASAv -uuid 75979cfe-ea28-436b-893a-306a85da02f8 -machine type=pc-1.0,accel=kvm -serial mon:stdio -nographic -nodefconfig -nodefaults -display none -vga std -rtc base=utc > /opt/unetlab/tmp/0/34a4c0ab-fa89-4059-a820-c6ba7112e5a2/3/wrapper.txt 2>&1 &


Any help is appreciated.

ecze
Posts: 533
Joined: Wed Mar 15, 2017 1:54 pm

Re: Telnet blank screen

Post by ecze » Mon Oct 09, 2017 3:29 pm

By default telnet doesn't work for ASA... Use VNC

To get telnet working, follow our pretty howto available on Eve web site

E.

amosely00
Posts: 2
Joined: Mon Oct 09, 2017 3:16 pm

Re: Telnet blank screen

Post by amosely00 » Mon Oct 09, 2017 4:11 pm

I am having the same issue on routers.

Oct 09 17:01:59 INFO: starting /opt/unetlab/wrappers/qemu_wrapper -T 0 -D 1 -t "Switch" -F /opt/qemu/bin/qemu-system-x86_64 -d 0 -- -nographic -device e1000,netdev=net0,mac=50:00:00:01:00:00 -netdev tap,id=net0,ifname=vunl0_1_0,script=no -device e1000,netdev=net1,mac=50:00:00:01:00:01 -netdev tap,id=net1,ifname=vunl0_1_1,script=no -device e1000,netdev=net2,mac=50:00:00:01:00:02 -netdev tap,id=net2,ifname=vunl0_1_2,script=no -device e1000,netdev=net3,mac=50:00:00:01:00:03 -netdev tap,id=net3,ifname=vunl0_1_3,script=no -smp 1 -m 768 -name Switch -uuid a0a87708-ef70-4b0f-a3f4-49aeb5ada2d6 -machine type=pc-1.0,accel=kvm -serial mon:stdio -nographic -nodefconfig -nodefaults -rtc base=utc > /opt/unetlab/tmp/0/34a4c0ab-fa89-4059-a820-c6ba7112e5a2/1/wrapper.txt 2>&1 &

Oct 09 17:01:59 INFO: CWD is /opt/unetlab/tmp/0/34a4c0ab-fa89-4059-a820-c6ba7112e5a2/1

Oct 09 17:01:59 ERROR: QEMU Arch is not set (80015).

aaInman
Posts: 1
Joined: Sat Aug 13, 2022 10:32 pm

Re: Telnet blank screen

Post by aaInman » Sat Nov 05, 2022 9:50 pm

Thanks! Had the same issue CHANGING FROM TELNET TO VNC WORKED for me. I was running FMC and FTDs 7.2.1 and using HTML5 console. I would get a blank screen when trying to Telnet. After changing from Telnet to VNC it was fixed.

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