Mohammad,
It doesn't matter. The logic to the router is to prevent it. You need two Gig interfaces. You found the root of the problem before asking the question so I am not sure why you keep trying to debate something you have already proven. Regards, Tyson Scott - CCIE #13513 R&S, Security, and SP Managing Partner / Sr. Instructor - IPexpert, Inc. Mailto: <mailto:[email protected]> [email protected] Telephone: +1.810.326.1444, ext. 208 Live Assistance, Please visit: <http://www.ipexpert.com/chat> www.ipexpert.com/chat eFax: +1.810.454.0130 IPexpert is a premier provider of Self-Study Workbooks, Video on Demand, Audio Tools, Online Hardware Rental and Classroom Training for the Cisco CCIE (R&S, Voice, Security & Service Provider) certification(s) with training locations throughout the United States, Europe, South Asia and Australia. Be sure to visit our online communities at <http://www.ipexpert.com/communities> www.ipexpert.com/communities and our public website at <http://www.ipexpert.com/> www.ipexpert.com From: Mohammad Itani [mailto:[email protected]] Sent: Tuesday, July 27, 2010 3:02 AM To: Tyson Scott Cc: Matt Hill; [email protected] Subject: Re: [OSL | CCIE_RS] [CCIE - R&S] BVI - different Physical Interface Speeds! I'm using the BVI for irb as below: Router Giga Fast stp forwarding | | stp blocking | | Giga Fast Switch1-------Switch2 Since stp is blocking on the link to the right, no funnel network will be created since that link is only used as a backup. So the forwarding interface is Giga on both ends. But the problem is that Switch1 is negotiating to 100 with the BVI in this case. Thanks, - Mohammad On Tue, Jul 27, 2010 at 1:20 AM, Tyson Scott <[email protected]> wrote: As you are bridging two interfaces the interface speeds need to match. It wouldn't be a good thing if the router created a network like a funnel. If you want it to operate at gig speeds then you need to gig interfaces. Regards, Tyson Scott - CCIE #13513 R&S, Security, and SP Managing Partner / Sr. Instructor - IPexpert, Inc. Mailto: [email protected] Telephone: +1.810.326.1444, ext. 208 Live Assistance, Please visit: www.ipexpert.com/chat eFax: +1.810.454.0130 IPexpert is a premier provider of Self-Study Workbooks, Video on Demand, Audio Tools, Online Hardware Rental and Classroom Training for the Cisco CCIE (R&S, Voice, Security & Service Provider) certification(s) with training locations throughout the United States, Europe, South Asia and Australia. Be sure to visit our online communities at www.ipexpert.com/communities and our public website at www.ipexpert.com <http://www.ipexpert.com/> From: [email protected] [mailto:[email protected]] On Behalf Of Mohammad Itani Sent: Monday, July 26, 2010 6:06 PM To: Matt Hill Cc: [email protected] Subject: Re: [OSL | CCIE_RS] [CCIE - R&S] BVI - different Physical Interface Speeds! Hi Matt, The plugged device (switch) Gigabit interface is auto negotiating to 100. I'm talking about the speed not the bandwidth. Thanks, - Mohammad On Tue, Jul 27, 2010 at 12:27 AM, Matt Hill <[email protected]> wrote: HI Mohammad, Are you sure the interface is at 100/F? Is the interface just showing "bandwidth 100" under show interfaces? What speed is the device plugged into the Gigabit port of the BVI negotiating at? I have a feeling that the BVI is reporting 100 for the "bandwidth" statement for your routing, qos etc under show interfaces but the L2 interface is still working at 1000. Cheers, Matt CCIE #22386 CCSI #31207 On 27 July 2010 04:14, Mohammad Itani <[email protected]> wrote: > My friend asked me a question about a BVI used to combine > one GigabitEthernet interface and one FastEthernetinterface. > > The BVI is always working at the speed of 100 Mbps although stp is blocking > the path through the FastEthernet (used as a backup path only). > > When he unplugs the fastethernet cable the bvi works at the gigabit speed > but when he plugs it again it falls to the lowest speed. > > Can we force BVI someway to perform at the speed of the Gigabit interface > and only fall back when the other path is not blocking? > > I know this doesn't seem to be logical but just maybe in case there's a way > to help my friend :) > > Thanks, > > - Mohammad > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > >
_______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
