Quite right! Sent from my iPhone
> On Jul 22, 2014, at 9:31 PM, "Andrew LaPorte" <[email protected]> wrote: > > If I'm not mistaken you can also back up the file to the local file system > on the switch. > > ip dhcp snooping database flash:dhcpsnooping.txt > > Andy > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Ryan Jensen > Sent: Tuesday, July 22, 2014 11:11 PM > To: Taqdir Singh > Cc: [email protected] > Subject: Re: [OSL | CCIE_RS] DHCP Snooping > > You can use the bindings db for dynamic arp inspection. It compares entires > in the table to the arp messages being seen. > Ex: the bindings table says IP 1.1.1.2 is on port G0/4. Someone does arp > request for 1.1.1.2 and the arp reply comes from int G0/6.... That's a > violation and the arp reply would be dropped. > You can backup the bindings db to tftp priodically and then download that > table when it boots up to restore the bindings. > >> On Tuesday, July 22, 2014, Taqdir Singh <[email protected]> wrote: >> >> Hi Team, >> >> >> DHCP Snooping creates snooping database with help of DHCP packets >> flowing through >> >> >> but once switch is rebooted by default the database is lost >> >> but clients will still have the IP address. >> >> So my question is.. now in this case switch wont be having the DHCP >> binding database.. will client still be able to communicate and do normal > work. >> >> if yes.. then what is the benifit of keeping DHCP snooping binding table ? >> >> i think if it just drops dhcp offer/ack packets on untrusted ports >> thats good.. but why it creates entry in binding table >> >> >> >> -- >> _______________________________________________ >> Free CCIE R&S, Collaboration, Data Center, Wireless & Security Videos :: >> >> iPexpert on YouTube: www.youtube.com/ipexpertinc > _______________________________________________ > Free CCIE R&S, Collaboration, Data Center, Wireless & Security Videos :: > > iPexpert on YouTube: www.youtube.com/ipexpertinc > > _______________________________________________ > Free CCIE R&S, Collaboration, Data Center, Wireless & Security Videos :: > > iPexpert on YouTube: www.youtube.com/ipexpertinc _______________________________________________ Free CCIE R&S, Collaboration, Data Center, Wireless & Security Videos :: iPexpert on YouTube: www.youtube.com/ipexpertinc
