gtm_add failed

Self IP port lockdown is set to allow default.

what version you are running on GTM devices?

I hope bash shell is enabled on both F5 devices.

Both running in version 12.1.3.2. I can ssh to mgmt IP using root account. If I ssh to external IP of existing GTM, it was failed. I have try telnet port 22 from outside to external IP of existing GTM and run tcpdump. Below are the output.

[root@GTM:Active:Standalone] config tcpdump -nni 1.1 -vv host X.X.Y.Y and port 22 tcpdump: listening on 1.1, link-type EN10MB (Ethernet), capture size 65535 bytes 17:48:40.688104 IP (tos 0x0, ttl 121, id 4122, offset 0, flags [DF], proto TCP (6), length 52) 210.195.27.234.63179 > X.X.Y.Y.22: Flags [S], cksum 0x9dcc (correct), seq 3434528005, win 17520, options [mss 1440,nop,wscale 8,nop,nop,sackOK], length 0 in slot1/tmm0 lis= 17:48:43.688044 IP (tos 0x0, ttl 121, id 4123, offset 0, flags [DF], proto TCP (6), length 52) 210.195.27.234.63179 > X.X.Y.Y.22: Flags [S], cksum 0x9dcc (correct), seq 3434528005, win 17520, options [mss 1440,nop,wscale 8,nop,nop,sackOK], length 0 in slot1/tmm0 lis= 17:48:49.688832 IP (tos 0x0, ttl 121, id 4124, offset 0, flags [DF], proto TCP (6), length 52) 210.195.27.234.63179 > X.X.Y.Y.22: Flags [S], cksum 0x9dcc (correct), seq 3434528005, win 17520, options [mss 1440,nop,wscale 8,nop,nop,sackOK], length 0 in slot1/tmm0 lis=

^C 3 packets captured 3 packets received by filter 0 packets dropped by kernel

Check routes, firewalls and routers. Port 22 need to be allowed across all the way from GTM1 to GTM2

The tcpdump was taken from existing GTM. Existing GTM was able to receive the telnet on port 22 but it did not reply.