Device1# debug snmp packet SNMP packet debugging is on Device1# ssh -l lab 10.0.0.2 Password: Device2# exit [Connection to 10.0.0.2 closed by foreign host] Device1# *Jul 18 10:18:42.619: SNMP: Queuing packet to 10.0.0.2 *Jul 18 10:18:42.619: SNMP: V1 Trap, ent cisco, addr 10.0.0.1, gentrap 6, spectrap 1 local.9.3.1.1.2.1 = 6 tcpConnEntry.1.10.0.0.1.22.10.0.0.2.55246 = 4 ltcpConnEntry.5.10.0.0.1.22.10.0.0.2.55246 = 1015 ltcpConnEntry.1.10.0.0.1.22.10.0.0.2.55246 = 1056 ltcpConnEntry.2.10.0.0.1.22.10.0.0.2.55246 = 1392 local.9.2.1.18.2 = lab *Jul 18 10:18:42.879: SNMP: Packet sent via UDP to 10.0.0.2 Device1# Examples:
SSH Debugging Enhancements The following is sample output from the debug ip ssh detail command. The output provides debugging information about the SSH protocol and channel requests. Device# debug ip ssh detail 00:04:22: SSH0: starting SSH control process 00:04:22: SSH0: sent protocol version id SSH-1.99-Cisco-1.25 00:04:22: SSH0: protocol version id is - SSH-1.99-Cisco-1.25 00:04:22: SSH2 0: SSH2_MSG_KEXINIT sent 00:04:22: SSH2 0: SSH2_MSG_KEXINIT received 00:04:22: SSH2:kex: client->server enc:aes128-cbc mac:hmac-sha1 00:04:22: SSH2:kex: server->client enc:aes128-cbc mac:hmac-sha1 00:04:22: SSH2 0: expecting SSH2_MSG_KEXDH_INIT 00:04:22: SSH2 0: SSH2_MSG_KEXDH_INIT received 00:04:22: SSH2:
kex_derive_keys complete 00:04:22: SSH2 0: SSH2_MSG_NEWKEYS sent 00:04:22: SSH2 0: waiting for SSH2_MSG_NEWKEYS 00:04:22: SSH2 0: SSH2_MSG_NEWKEYS received 00:04:24: SSH2 0: authentication successful for lab 00:04:24: SSH2 0: channel open request 00:04:24: SSH2 0: pty-req request 00:04:24: SSH2 0: setting TTY - requested: height 24, width 80; set: height 24, width 80 00:04:24: SSH2 0: shell request 00:04:24: SSH2 0: shell message received 00:04:24: SSH2 0: starting shell for vty 00:04:38: SSH0: Session terminated normally The following is sample output from the debug ip ssh packet command. The output provides debugging information about the SSH packet. Device# debug ip ssh packet 00:05:43:
SSH2 0: send:packet of length 280 (length also includes padlen of 4) 00:05:43: SSH2 0: ssh_receive: 64 bytes received 00:05:43: SSH2 0: input: total packet length of 280 bytes 00:05:43: SSH2 0: partial packet length(block size)8 bytes,needed 272 bytes, maclen 0 00:05:43: SSH2 0: ssh_receive: 64 bytes received 00:05:43: SSH2 0: partial packet length(block size)8 bytes,needed 272 bytes, maclen 0 00:05:43: SSH2 0: ssh_receive: 64 bytes received Secure Shell Version 2 Support Examples: SSH Debugging Enhancements Secure Shell Version 2 Support 20