Hi Community.
Guys, i see every second IP adress has a Internet connection. Every even IP address, the odd IP addresses havent a Internet Connection.
I do NAT betwenn 192.168.0.14 255.255.255.0 and 172.16.20.0 255.255.254.0.
Is that a problem to do NAT betwenn a /24 network and /23 network?
interface GigabitEthernet0/0.2 <- The Inside Interface Vlan 120
encapsulation dot1Q 120
ip address 172.16.20.1 255.255.254.0
ip access-group Lakeside in
ip nat inside
ip virtual-reassembly in
!
interface GigabitEthernet0/0.3 <- The Inside Interface Vlan 121
encapsulation dot1Q 121
ip address 172.17.20.1 255.255.254.0
ip access-group Lakeside in
ip nat inside
ip virtual-reassembly in
interface GigabitEthernet0/1 <- The outisde Interface as a DHCP Client
ip address dhcp
ip nat outside
ip virtual-reassembly in
duplex auto
speed auto
ip nat inside source list ACL_NAT interface GigabitEthernet0/1 overload <- The NAT Rule
ip route 0.0.0.0 0.0.0.0 192.168.0.1 <- The route to the Router of the Provider
ip route 192.168.10.0 255.255.255.0 192.168.20.1
!
ip access-list extended ACL_NAT <- The ACL for NAT
permit ip 172.16.0.0 0.15.255.255 any
ip access-list extended Lakeside <- The ACL for the Inside Vlans 12 and 121
permit udp any any eq bootps
permit udp any any eq bootpc
deny ip any 172.16.0.0 0.15.255.255
deny ip any 192.168.0.0 0.0.255.255
deny ip any 10.0.0.0 0.255.255.255
permit ip 172.16.20.0 0.0.0.254 any
permit ip 172.17.20.0 0.0.0.254 any
Here the DHCP Lease from the Provider:
Temp IP addr: 192.168.0.14 for peer on Interface: GigabitEthernet0/1
Temp sub net mask: 255.255.255.0
DHCP Lease server: 192.168.0.1, state: 5 Bound
DHCP transaction id: 1C71
Lease: 604800 secs, Renewal: 302400 secs, Rebind: 529200 secs
Temp default-gateway addr: 192.168.0.1
Next timer fires after: 3d07h
Retry count: 0 Client-ID: cisco-4403.a7c6.3f69-Gi0/1
Client-ID hex dump: 636973636F2D343430332E613763362E
336636392D4769302F31
Hostname: KLS-RTR-001
Here the NAT Translations:
tcp 192.168.0.14:51174 172.17.20.2:51174 4.28.11.50:443 4.28.11.50:443
tcp 192.168.0.14:53590 172.17.20.4:53590 17.149.36.177:443 17.149.36.177:443
tcp 192.168.0.14:50095 172.17.20.6:50095 17.172.232.70:443 17.172.232.70:443
tcp 192.168.0.14:49391 172.17.20.8:49391 17.172.232.114:443 17.172.232.114:443
udp 192.168.0.14:55348 172.17.20.8:55348 8.8.8.8:53 8.8.8.8:53
tcp 192.168.0.14:52477 172.17.20.10:52477 157.56.254.54:443 157.56.254.54:443
tcp 192.168.0.14:34352 172.17.20.12:34352 212.227.17.186:993 212.227.17.186:993
tcp 192.168.0.14:56589 172.17.20.20:56589 17.158.10.36:443 17.158.10.36:443
