Technical Notes: Networks

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OSI Model[edit]

Osi-550x425.gif

Reference: https://alln-extcloud-storage.cisco.com/ciscoblogs/osi-550x425.gif


Cisco[edit]

Debugging[edit]

 debug interfaces backup all
 no debug all

SNMP[edit]

IOS

 snmp-server group CiscoSNMPgroup  v3 priv access 90
 snmp-server user CiscoSNMPusr CiscoSNMPgroup v3 auth md5 <auth pwd> priv des <priv pwd>

NexusOS

 snmp-server user CiscoSNMPusr vdc-operator auth md5 <auth pwd> priv <priv pwd> localizedkey

Sysinternals (www.sysinternals.com)[edit]

 tcpview => shows processes, pid, protocol, local IP/port, remote IP/port, state

Packet captures[edit]

Ref: http://www.firewall.cx/cisco-technical-knowledgebase/cisco-routers/1089-cisco-router-embedded-packet-capture-configuration-usage-troubleshooting-exporting.html