Cisco Discovery Protocol (CDP) is a managment protocol that allows routers and switches to tell each other about their IOS version, hardware platform, and basic config info. Some security experts say to disable it because it tells too much.
It has nothing to do with bringing the serial interface up/up. You could use it or you could not. The two routers on the HDLC link don't have to agree. One could send CDP while the other doesn't and the link should still come up/up, assuming everything is OK at the physical and data-link layers. It's too bad they used "no cdp enable" in that simple example with no explanation. I don't think it's the default? So someone had to type it in, so they should have explained it. Priscilla Lawrence Law wrote: > > Dear all, > > > From cisco configuration example > > http://www.cisco.com/en/US/tech/tk713/tk317/technologies_configuration_examp > le09186a00800944ff.shtml > > I'm wondering that the line "no cdp enable" is required for > both router > in order to make a serial connection up for back-to-back > connection. > > Regards, > Lawrence > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=62766&t=62764 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
