I have recently joined a company, and they have below network topology.
There are these vlans defined with Ip routing enabled.
interface vlan 4 name "Four" routing ip address 192.168.4.77 255.255.255.0 exit interface vlan 10 name "Infrastructure" routing ip address 10.10.0.1 255.255.255.0 exit interface vlan 20 name "Infrastructure" routing ip address 10.20.0.1 255.255.255.0 exit interface vlan 30 name "Infrastructure" exit interface vlan 40 name "Infrastructure" exit interface vlan 50 name "Corporate Desktop" exit interface vlan 60 name "Dev Domain" routing ip address 10.0.80.1 255.255.240.0 exit interface vlan 70 name "R and D Domain" exit interface vlan 80 name "Support Domain" exit interface vlan 90 name "QA Domain" routing ip address 10.0.128.1 255.255.240.0 exit interface vlan 192 name "Current Corp Domain" routing ip address 192.168.1.177 255.255.252.0 exit
Then there is a default route to firewall ip route 0.0.0.0 0.0.0.0 192.168.1.77 All the hosts in the environment have firewall as the default gateway.
All the switches Data6, data5, data4, data3, data2, data1 are on native vlan's with 192.168.0.0/22 subnet.
Now The issue is that the network is really slow what might be the reason for it?
And they want to segregate servers on a different vlan which are now present on 192 ip address range.
Also they want to migrate it to 10.0.0.0 network to increase number of hosts for future. Is it really necessary?
Now my issue is can I segregate the network by creating vlan's without reassigning IP's to all the hosts on the network?
And if I need to reassign IP to all the host and servers will I have to change all NAT policies and access lists (which I understand is a yes), there are currently 330 access lists and 250 NAT Policies.