We're in the process of migrating a site from one big flat network to vlans and were wondering how many secondary IPs an interface can have. All that I find online is "multiple". We might need 20-30...
if you are going to use DHCP to provide ip addresses to users, you can move user ports directly to different Vlans, you can configure the associated SVIs (L3 interfaces if using multilayer switches) and so you can probably skip an intermediary step using secondary ip addresses.
Each VLAN will have its own DHCP scope amd you will be fine.
If not using DHCP you need however to change configuration one device a time and again you can use directly new vlans and new L3 interfaces.
So I would suggest to consider moving few devices to a new vlan at a time after having configured the associated L3 interface.
You need to prepare the infrastructure with all the required L2 trunks to carry all the required vlans from access layer switch to distribution/core
Then when everything is fine you can start your moves directly to definitive Vlans with working L3 services (default gateway may be provided with HSRP or GLBP for redundancy)
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.