Re: PortFast and routers [7:71253]
Curious wrote in message news:[EMAIL PROTECTED] Hello, I know that is a bad idea to configure a port with portfast when this port connect with other switch (loops can be created), but the question is: could I put a port connected to a router in portfast mode? A router is a layer 3 device not a layer 2, so I think this is not a risk, am I right? This way the port wakes up quickly, right? And the final question: If I configure a portfast port with a trunk an connect it to a router? My understanding of the reason for the existence of the portfast function in the first place had to do with startup times for protocols like IPX. I can recall in one production network I managed, where we ran IP and IPX, it was not uncommon for a machine to boot on the IP side but fail to boot on the IPX side - the IPX side timed out prior to establishing a connection with an IPX server. I could browse the internet, for example, but I was unable to log on to the Novell server. The solution was portfast on all the switchports to which servers and users connected. A router isn't going to care one way or another since it is not logging on to anything. So the answer is that it can't hurt. I'm curious - what is it you think will be gained? Thanks my friends. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=71404t=71253 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
PortFast and routers [7:71253]
Hello, I know that is a bad idea to configure a port with portfast when this port connect with other switch (loops can be created), but the question is: could I put a port connected to a router in portfast mode? A router is a layer 3 device not a layer 2, so I think this is not a risk, am I right? This way the port wakes up quickly, right? And the final question: If I configure a portfast port with a trunk an connect it to a router? Thanks my friends. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=71253t=71253 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: PortFast and routers [7:71253]
Curious 6/24/03 10:25:25 AM Hello, I know that is a bad idea to configure a port with portfast when this port connect with other switch (loops can be created), but the question is: could I put a port connected to a router in portfast mode? A router is a layer 3 device not a layer 2, so I think this is not a risk, am I right? This way the port wakes up quickly, right? And the final question: If I configure a portfast port with a trunk an connect it to a router? Thanks my friends. It's safe to turn on portfast on any port that you know will not be connected to another switch (or a hub that might get connected to another switch.) John Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=71259t=71253 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: PortFast and routers [7:71253]
Sticking a router in a port fast port is probably okay, since there should be no Bpdu's generated by the router. Most Cisco switches don't allow the trunk function And the stp-portfast function on at the same time...you do not want the portfast Function enabled on trunks... Larry Letterman Cisco Systems -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Tuesday, June 24, 2003 8:48 AM To: [EMAIL PROTECTED] Subject: PortFast and routers [7:71253] Hello, I know that is a bad idea to configure a port with portfast when this port connect with other switch (loops can be created), but the question is: could I put a port connected to a router in portfast mode? A router is a layer 3 device not a layer 2, so I think this is not a risk, am I right? This way the port wakes up quickly, right? And the final question: If I configure a portfast port with a trunk an connect it to a router? Thanks my friends. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=71268t=71253 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
