thats what even i thought .. But say I have vlan 10 in vlan database and int vlan 10 .. no acess port for vlan 10 , i have a trunk carrying vlan 10 .. as expected my interface vlan 10 was UP and UP.
Now if i remove vlan 10 from trunk ( switchport trunk allowed vlan except 10 ) ; i still have my SVI in UP state. any light on this .. what i have deduced is that presence of vlan in vlan database is only point to be kept in mind. Gaurav Madan. 2008/2/20 Brian K Valentine <[EMAIL PROTECTED]>: > Hi, > > > > I'm new to the study list, but I believe I can contribute to this issue. > > > > My understanding is this… In order for the SVI for that VLAN to come "up > and up", you need to have an interface on that local switch assigned to that > VLAN. In other words, at least one of the ports must have that VLAN > assigned to it as an access VLAN or at least one of the ports must be > trunking that VLAN. This also implies that the VLAN exists in the local > VLAN database. > > > > Brian > > > > *From:* [EMAIL PROTECTED] [mailto: > [EMAIL PROTECTED] *On Behalf Of *GAURAV MADAN > *Sent:* Wednesday, February 20, 2008 1:55 AM > *To:* [email protected] > *Subject:* [OSL | CCIE_RS] SVI basic query > > > > Hi All > > > > Just wanted to get clearification on something very basic . Under what > circumstances do we have int vlan <> in down state ? > > > > I know that if we create " int vlan x " and vlan x do not exist in vlan > database then there will be no spanning tree instance for this vlan and the > int vlan x will be down .. Is there some other case also ; where int vlan x > is down .. > > > > I note that only vlan presence is the criterai .. Even if i disable STP > for this vlan .. i see interface in UP state . > > > > Thnx > > Gaurav Madan. > > > > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.5.516 / Virus Database: 269.20.8/1288 - Release Date: 2/19/2008 > 8:47 PM > > No virus found in this outgoing message. > Checked by AVG Free Edition. > Version: 7.5.516 / Virus Database: 269.20.8/1288 - Release Date: 2/19/2008 > 8:47 PM >
