Cisco IOS
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NAT Configuration
NAT of course stands for Network Address Translation. In our case we wanted to do a simple NAT configuration, but we ran into some issues with it because of some of the other configurations that we have.
The first thing to do is to decide which interfaces are inside and outside. An inside interface is an interface that is facing the internal network that you want to translate to. An outside interface is an interface that is facing the external network that you want to translate from.
NOTE: When configuring an outside interface that is a bonded interface connected to a vlan, be sure to label both the vlan and each individual interface that makes up the bond.
This can be done with each interface with either of the following commands:
# ip nat inside # ip nat outside
Next is the actual NAT rule. For instance, if you were to NAT a public IP of 72.14.207.99 to a private IP of 192.168.0.1, you would do the following:
# ip nat inside source static 192.168.0.1 72.14.207.99
Firewall Settings
ACL Configuration
When creating an access list for our connection, one thing that needs to be noted when doing this is that our ten-gigabit uplinks are using OSPF protocols in order to see the rest of the world. As such, this needs to be included in the access list or nothing will work.
For example, we would need the following:
permit ospf 128.227.253.0 0.0.0.255 any
CPU Utilization
# show processes cpu history
This outputs something like the following:
11111
4445555566666222225555555555444446666622222555553333355555
100
90
80
70
60
50
40
30
20
10 ************************* ***** ***** *****
0....5....1....1....2....2....3....3....4....4....5....5....
0 5 0 5 0 5 0 5 0 5
CPU% per second (last 60 seconds)
1 2 1 1 43111121111 1 1 11 11111 2
660969809297988036111722108929998712436249522561
100
90
80
70
60
50
40 *
30 * ** *
20 * *** * * ** * *
10 **###*#####################*#####*** * *####**
0....5....1....1....2....2....3....3....4....4....5....5....
0 5 0 5 0 5 0 5 0 5
CPU% per minute (last 60 minutes)
* = maximum CPU% # = average CPU%
100
90
80
70
60
50
40
30
20
10
0....5....1....1....2....2....3....3....4....4....5....5....6....6....7.
0 5 0 5 0 5 0 5 0 5 0 5 0
CPU% per hour (last 72 hours)
* = maximum CPU% # = average CPU%
