OK .. I must be missing something simple. I am trying to add a second subnet to a facility. DHCP has been provided by the router for this flat network. The router (1760) is connected to a 2950G switch. I reconfigured the ethernet interface and can see both VLANS on the switch with the port between the switch and router a trunk port and the rest access ports. I cannot get DHCP to work properly. Here is the new config for the router.
That is what I was atempting to do was to not have VLAN1 configured as my management VLAN. At our larger facilities with 4506s at the core, we have say VLAN 5 as the management VLAN. This is one of the security recommendations we came across a while back. It has been a long time since I had to setup VLANing with simple 2950s and a router.
So just to recap, native should be associated with my management VLAN on both the rouer and the switchport the router is connected to. After that any other switch to switch port can be the standard trunk.
It didn't work before because you had the native vlan set to 12 on the router and if you look at the switch none was set so it would be the default native vlan of 1 . Once you took the native of 12 off it too would be 1 and thus work. If you had put native 12 on the switch it probably would have worked . Also noticed on your switchports that clients use you have no portfast configured on the ports and this can cause problems with dhcp. On all client ports issue the switchport host command .
So the native VLAN basically becomes the default VLAN. Since I am attempting to eleminate VLAN 1 as part of our security policy and make VLAN 33 the management VLAN that is where the native needs to be on both sides.
Our standard switch template does add spanning-tree port fast and switchport mode access. I had forgotten about the switchport host command as it also disables channel group. I had not applied the template as I wanted to refresh myself on what other basics I needed for VLANs on a 2950 / router config. I am so used to working with VLANS at our larger facilities and they all have a 4506 with the SUP IV card.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.