Re: Help with 3550 Initial IP config to my Colo Rack
I have just purchased a 48-port Cisco 3550 with EMI image c3550-i5q3l2-mz.121-22.EA5a.bin installed.
I have 4 class-c's from my colo provider being routed to my cabinet. They have provided me the following IP routing information:
WAN: x.y.104.98 255.255.255.252
LAN: a.b.112.0 255.255.252.0
I will connect port 48 to the WAN drop in my cabinet.
I want the other ports to route to various subnets, which will connect to independent servers configured for the subnet.
Port 1> a.b.112.1/26
Port 2> a.b.112.64/26
Port 3> a.b.112.128/28
Port 4> a.b.112.144/28
Port 5> a.b.112.160/30
Port 6> a.b.113.1/30
Port 7> a.b.113.4/30
How should i configure the 3550 interfaces and/or VLANs?
How do i configure port 48 for the WAN?
Do I have to use the IP ROUTE or IP ADDRESS commands?
I have no idea on the best method, or for that matter, a method that will work.
The WAN port on the 3550 -
ip address x.y.104.198
then for each subnet you want to route on the 3550 you need to -
1) create a vlan in the vlan database eg.
3550(config)# vlan 10 name v10
2) create a L3 SVI for this vlan ie.
3550(config)# int vlan 10
3550(config-if)# ip address a.b.112.1 255.255.255.192
3550(config-if)# no shut
You need to do this for each subnet you want to create
3) then to allocate a server into vlan 10 -
switchport mode access
switcport access vlan 10
remove any references to "switchport mode trunk" from the port config as this is an access port not a trunk port. In this example the server would have an IP address from the a.b.112.0/26 subnet and it's default-gateway would be the vlan 10 IP address you assigned in step 2 ie. a.b.112.1
4) turn on ip routing on the 3550 ie.
3550(config)# ip routing
5) add a default route on the 3550 pointing to the default-gateway ie.
3550(config)# ip route 0.0.0.0 0.0.0.0 x.y.104.97
That should do it. Basically you only configure the WAN port with an IP address. The subnets are configured as vlans with L3 vlan interfaces and then you simply configure the ports to be in their relevant subnets.
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.