NIC Teaming

NIC Teaming, also known as load balancing and failover (LBFO), allows multiple network adapters on a computer to be placed into a team for the following purposes:

  • Bandwidth aggregation
  • Traffic fail-over to prevent connectivity loss in the event of a network component failure

You will need at least one adapter, which can be used for separating traffic, that is using Virtual LANs (VLANs). In order to take advantage of the LBFO benefits of NIC Teaming, you will need at least two adapters, and Windows Server 2012 will support up to 32 adapters in a single team.

In Windows server it’s called NIC Teaming, and the purpose is to take multiple physical network controllers and make them appear to Windows as one network interface. Turning on NIC Teaming is simple enough, but you will be asked a few questions that are easier to answer if we take a moment to understand the NIC Teaming environment. So let’s take a look at a couple of scenarios. Consider a file server that is heavily used throughout our network.

Everyone needs to be able to find this file server and this server needs to be able to send large amount of data in different directions at the same time very quickly. The requests from each work station are small enough to not generate a lot of traffic. For this situation it would be nice if all of the traffic to the server could be funneled through the same physical adapter and each client request could be routed through whichever physical NIC was being least used at the time.

NIC Teaming Configuration

Load Balancing Mode

  • Address Hashing
  • Hyper-V port
  • Dynamic

to configure:

 

  1. In Server Manager, click Local Server.
  2. In the Properties pane locate NIC Teaming, and then click the link Disabled to the right. The NIC Teaming dialog box opens.

3. In Adapters and Interfaces, select the network adapters that you want to add to a NIC Team.

4.Click TASKS, and then click Add to New Team.

 

 

 

 

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Cisco Useful Commands

There are several commands on Cisco, I have tried to collect some effective commands:

Banner
conf t
banner motd #Unauthorized access to this device is prohibited!#

Password for console
conf t
(config)# line console 0
(config)# password yourpassword
(config)# login

Password for vty
conf t
(config)#line vty 0
(config)#password myvty0
(config)#login

Password for vty
conf t
(config)# line vty 1 4
(config)# password myvty
(config)# login

Secure access for previlage mode
conf t
(config)# enable password yourpassword
(config)# enable secret Mysecretpasword //encrypted

Secure all password

conf t
(config)#service password-encryption

Creating Vlans
conf t
(config)# int vlan1
(config)# ip address 192.168.1.2. 255.255.255.0
(config)# no shut
(config)# do wr

Default Gateway
conf t
(config)# ip default-gateway 192.168.1.1
(config)# no shut
(config)# do wr

Speed Control
conf t
(config)#int f0/2
(config)#speed 100
(config)#duplex full

Port Security
conf t
(config)# int fa0/2
(config)# switchport mode access
(config)# switchport port-security mac-address sticky
(config)# switchport port-security maximum 1
(config)# switchport port-security violation shutdown

Useful command for port security
show port-security address
show port-security in fa0/2

Create Vlan
conf t
(config)# vlan 100
(config)# name wireless

show vlan brief

Access port to Vlan

conf t
(config)# int fa0/3
(config)# switchport access vlan 100

Range of port to Vlan

conf t
(config)# int range fa0/5-9
(config)# switchport access vlan 200

Trunk
Trunk is a port which is not member of any vlans

conf t
(config)# int f0/24
(config)# switchport mode trunk

Trunk Useful Command
show int trunk

Show command
show mac-address-table ( shows mac switch)
sh running-config //config stored in RAM
sh startup-config //config stored in NVRAM
sh flash // display memory flash
sh version // all info about device

erase startup-config //erase router config completely

Static Routing

Recursive
(Destination Network) (Subnet mask) (next hub(enter))

Direct
(Destination Network) (Subnet mask) (exit interface)
ip route 192.168.3.0 255.255.255.0 serial0/0/0

Access List

conf t
(config)# ip access-list extended 100
(config)# deny tcp host 172.16.1.2 any eq 80
(config)# permit tcp host 172.16.1.2 any eq telnet
(config)# permit ip any any
(config)# exit
(config)# int f0/0
(config)# ip access-group 100 inbound

 

conf t
(config)# ip access-list extended Nohttp
(config)# deny tcp 172.16.1.2 0.0.0.0 any eq www
(config)# permit tcp any any
(config)# exit
(config)# int f0/0
(config)# ip access-group Nohttp inbound

 

 

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