2009-05-07

Networking

• ​cdpr is a nifty little command which speaks the Cisco Discovery Protocol, allowing you to learn interesting things from your network.
  • 蠻有趣的套件，還可以查出接在哪一個 swicth 上的哪個 port。

    jazz@drbl:~$ sudo apt-get install cdpr
    jazz@drbl:~$ sudo cdpr
    cdpr - Cisco Discovery Protocol Reporter
    Version 2.2.1
    Copyright (c) 2002-2006 - MonkeyMental.com
    
    1. eth0 (No description available)
    2. eth1 (No description available)
    3. eth2 (No description available)
    4. any (Pseudo-device that captures on all interfaces)
    5. lo (No description available)
    Enter the interface number (1-5):1
    Using Device: eth0
    Waiting for CDP advertisement:
    (default config is to transmit CDP packets every 60 seconds)
    Device ID
      value:  ********.nchc.org.tw
    Addresses
      value:  140.110.***.***
    Port ID
      value:  GigabitEthernet0/48