VLAN configuration question [7:18696]
On a Cisco router/switch running IOS with VLAN capabilities (i.e. 8500) can a physical interface have an IP address if a subinterface off the same physical interface has an IP and is actively participating in a VLAN? i.e. Router(enable)# conf t Router(config)# interface 1/0 Router(config-if)# ip addr 10.10.10.50 255.255.255.0 Router(config-if)# interface 1/0.1 Router(config-if)# ip address 10.10.10.1 255.255.255.0 Router(config-if)# encapsulation dot1q 15 Are there any problems forthcoming in this setup? I seem to remember there was, but I have no equipment to verify this. Thanks! Sean Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=18696t=18696 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: VLAN configuration question [7:18696]
You cannot have the same network assigned to different interfaces/sub-interfaces Sean Knox wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... On a Cisco router/switch running IOS with VLAN capabilities (i.e. 8500) can a physical interface have an IP address if a subinterface off the same physical interface has an IP and is actively participating in a VLAN? i.e. Router(enable)# conf t Router(config)# interface 1/0 Router(config-if)# ip addr 10.10.10.50 255.255.255.0 Router(config-if)# interface 1/0.1 Router(config-if)# ip address 10.10.10.1 255.255.255.0 Router(config-if)# encapsulation dot1q 15 Are there any problems forthcoming in this setup? I seem to remember there was, but I have no equipment to verify this. Thanks! Sean Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=18699t=18696 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: VLAN configuration question [7:18696]
yes there is amjor flaw in your config. if you are using vlans which means subinterfaces, if you put an IP address on the main interface it will not work. so remove the ip address on interface 1/0 and you should be fine. -Original Message- From: Sean Knox [SMTP:[EMAIL PROTECTED]] Sent: Thursday, 6 September 2001 7:39 am To: [EMAIL PROTECTED] Subject: VLAN configuration question [7:18696] On a Cisco router/switch running IOS with VLAN capabilities (i.e. 8500) can a physical interface have an IP address if a subinterface off the same physical interface has an IP and is actively participating in a VLAN? i.e. Router(enable)# conf t Router(config)# interface 1/0 Router(config-if)# ip addr 10.10.10.50 255.255.255.0 Router(config-if)# interface 1/0.1 Router(config-if)# ip address 10.10.10.1 255.255.255.0 Router(config-if)# encapsulation dot1q 15 Are there any problems forthcoming in this setup? I seem to remember there was, but I have no equipment to verify this. Thanks! Sean Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=18709t=18696 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: VLAN configuration question [7:18696]
That's what I thought. Is this because the main interface needs to be bridging? If not, what is the reasoning behind this? Thanks, Sean Baker, Jason wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... yes there is amjor flaw in your config. if you are using vlans which means subinterfaces, if you put an IP address on the main interface it will not work. so remove the ip address on interface 1/0 and you should be fine. -Original Message- From: Sean Knox [SMTP:[EMAIL PROTECTED]] Sent: Thursday, 6 September 2001 7:39 am To: [EMAIL PROTECTED] Subject: VLAN configuration question [7:18696] On a Cisco router/switch running IOS with VLAN capabilities (i.e. 8500) can a physical interface have an IP address if a subinterface off the same physical interface has an IP and is actively participating in a VLAN? i.e. Router(enable)# conf t Router(config)# interface 1/0 Router(config-if)# ip addr 10.10.10.50 255.255.255.0 Router(config-if)# interface 1/0.1 Router(config-if)# ip address 10.10.10.1 255.255.255.0 Router(config-if)# encapsulation dot1q 15 Are there any problems forthcoming in this setup? I seem to remember there was, but I have no equipment to verify this. Thanks! Sean Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=18710t=18696 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: VLAN configuration question [7:18696]
If I remember correctly you cannot have an ip address on the actual interface if you have sub-int's with ip's. That true? From: Sean Knox Reply-To: Sean Knox To: [EMAIL PROTECTED] Subject: VLAN configuration question [7:18696] Date: Wed, 5 Sep 2001 17:39:23 -0400 On a Cisco router/switch running IOS with VLAN capabilities (i.e. 8500) can a physical interface have an IP address if a subinterface off the same physical interface has an IP and is actively participating in a VLAN? i.e. Router(enable)# conf t Router(config)# interface 1/0 Router(config-if)# ip addr 10.10.10.50 255.255.255.0 Router(config-if)# interface 1/0.1 Router(config-if)# ip address 10.10.10.1 255.255.255.0 Router(config-if)# encapsulation dot1q 15 Are there any problems forthcoming in this setup? I seem to remember there was, but I have no equipment to verify this. Thanks! Sean _ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=18719t=18696 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: VLAN configuration question [7:18696]
Yes, this is correct. Now I am curious what the actual reasoning is behind this. Anyone know? Sean Jeff Smith wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... If I remember correctly you cannot have an ip address on the actual interface if you have sub-int's with ip's. That true? Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=18721t=18696 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: VLAN configuration question [7:18696]
(I think this applies to both serial (frame relay) subinterfaces and ethernet (VLAN) subinterfaces) I don't think you can address both the interface and the subinterfaces, you have to choose one or the other. Can't say what would happen if you try, but usually when you're using the subinterface, there's nothing speaking directly to the interface itself . Mike W. Sean Knox wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... On a Cisco router/switch running IOS with VLAN capabilities (i.e. 8500) can a physical interface have an IP address if a subinterface off the same physical interface has an IP and is actively participating in a VLAN? i.e. Router(enable)# conf t Router(config)# interface 1/0 Router(config-if)# ip addr 10.10.10.50 255.255.255.0 Router(config-if)# interface 1/0.1 Router(config-if)# ip address 10.10.10.1 255.255.255.0 Router(config-if)# encapsulation dot1q 15 Are there any problems forthcoming in this setup? I seem to remember there was, but I have no equipment to verify this. Thanks! Sean Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=18722t=18696 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: VLAN configuration question [7:18696]
I can't say 100% why this is, but imagine if you configure a switchport to be a trunk link, and at the same time expect it to handle regular ethernet traffic over the same line (along with the trunked signal) Mike W. Sean Knox wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... That's what I thought. Is this because the main interface needs to be bridging? If not, what is the reasoning behind this? Thanks, Sean Baker, Jason wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... yes there is amjor flaw in your config. if you are using vlans which means subinterfaces, if you put an IP address on the main interface it will not work. so remove the ip address on interface 1/0 and you should be fine. -Original Message- From: Sean Knox [SMTP:[EMAIL PROTECTED]] Sent: Thursday, 6 September 2001 7:39 am To: [EMAIL PROTECTED] Subject: VLAN configuration question [7:18696] On a Cisco router/switch running IOS with VLAN capabilities (i.e. 8500) can a physical interface have an IP address if a subinterface off the same physical interface has an IP and is actively participating in a VLAN? i.e. Router(enable)# conf t Router(config)# interface 1/0 Router(config-if)# ip addr 10.10.10.50 255.255.255.0 Router(config-if)# interface 1/0.1 Router(config-if)# ip address 10.10.10.1 255.255.255.0 Router(config-if)# encapsulation dot1q 15 Are there any problems forthcoming in this setup? I seem to remember there was, but I have no equipment to verify this. Thanks! Sean Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=18723t=18696 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
