?
Solved

static route vlan intf  - when is route NOT in forwarding table??

Posted on 2007-11-13
5
Medium Priority
?
629 Views
Last Modified: 2008-01-16
I have a vlan interface and two gig-e switchports on it.  Only if both switchports become down am I to assume that the vlan will be down thus the static route will disappear from forwarding table.  What if one port is admin down, but the other is up -  theb I assume that the vlan is still up and the static route persists in the forwarding table.

OK - What if my ONE AND ONLY gig-e port on that vlan is up and suddenly gets it's Ethernet cable pulled and removed from the interface - how quick will this route disappear from forwarding table? in seconds? milliseconds? microseconds?  Anyone know how quick this stuff happens?
0
Comment
Question by:umbasa
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
5 Comments
 
LVL 50

Accepted Solution

by:
Don Johnston earned 1000 total points
ID: 20275847
As soon as the link status for the physical port is lost, the VLAN interface will immediately show the line protocol is down. At that point the static route will be removed from the routing table. Exactly how fast, I don't know. I've never timed it, but it's pretty quick.
0
 
LVL 1

Assisted Solution

by:Deathbob
Deathbob earned 1000 total points
ID: 20299971
In my experience removing entries from the routing table happens in less than 1 second from the time that the interface goes down. Beyond that, it's hard to time it.
0
 
LVL 1

Expert Comment

by:Deathbob
ID: 20299987
Note: My comment was from a linux based router.
I could guess that a cisco device would be as fast/faster.
0
 

Author Comment

by:umbasa
ID: 20674310
thanks Deathbob! excellent.
0

Featured Post

The Ideal Solution for Multi-Display Applications

Check out ATEN’s VS1912 12-Port DP Video Wall Media Player at InfoComm 2017. Kerri describes how easy it is to design creative video walls in asymmetric layouts and schedule detailed playlists ahead of time with its advanced scheduling feature.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

How to set-up an On Demand, IPSec, Site to SIte, VPN from a Draytek Vigor Router to a Cyberoam UTM Appliance. A concise guide to the settings required on both devices
When you try to share a printer , you may receive one of the following error messages. Error message when you use the Add Printer Wizard to share a printer: Windows could not share your printer. Operation could not be completed (Error 0x000006…
Here's a very brief overview of the methods PRTG Network Monitor (https://www.paessler.com/prtg) offers for monitoring bandwidth, to help you decide which methods you´d like to investigate in more detail.  The methods are covered in more detail in o…
NetCrunch network monitor is a highly extensive platform for network monitoring and alert generation. In this video you'll see a live demo of NetCrunch with most notable features explained in a walk-through manner. You'll also get to know the philos…
Suggested Courses

765 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question