Cisco CCNA: Intro to Networking - Starting Sept 29th
Sign up for my Fall Cisco CCNA: Intro to Networking class through Community Learning at Central Oregon Community College. This course is a non-credit course that you can attend in-person or online through streaming video. Enrolling in the course will also enroll you in the COCC Cisco Academy, give you free access to the online textbook, the latest CCNA Routing and Switching: Introduction to Networks curriculum from the Cisco Networking Academy. By enrolling in the course you will also get access to Packet Tracer as well as hands-on access to real networking equipment through the online Netlab. Access to Netlab will last for the duration of the course plus 2 additional weeks. The cost of the class is an excellent value at $499. The first class is September 29th, and will meet twice a week for 10 weeks. For more information go to: http://www.cocc.edu/continuinged/full-class-listing/ and scroll down to the Fall 2015 classes under the heading Computer - Advanced IT. Class spaces are limited so sign up soon!
EtherChannel is a Cisco technology that enables the aggregation or bundling of switchports into one logical link. Bundling multiple switchport ethernet links into one logical channel increases bandwidth as well creating redundancy and fault tolerance. For example, a bundle of four switchports into one EtherChannel would provide four times the bandwidth coming to and from the switch. EtherChannel bundles or port groups can be run from switch-to-switch or switch-to-server if the server's network interfaces cards (NICs) support EtherChannel. You can bundle up to eight switchports in one Etherchannel port group with no more than six EtherChannel port groups per switch.
In this Packet Tracer 6.2 activity you configure different forms of EtherChannel on switches S1, S2 and S3. The PCs have already been configured with IP addresses, subnet masks and default gateways.
1. Create VLANs 10 and 20 on all three switches
2. On both S1 and S2 configure switchport 0/1 as an access port and add it to VLAN10. Configure switchport 0/10 as an access port and add it to VLAN20.
3. Configure the open standard for EtherChannel, Link Aggregation Control Protocol (LACP 802.3ad) as channel-group 1 on both S1 and S2 Gigabit Ethernet switchports 0/1 and 0/2.
4. Configure Cisco's Port Aggregation Protocol (PAgP) for EtherChannel as channel-group 2 between S2 and S3 Fast Ethernet switchports 0/21-24. 5. Configure Cisco's EtherChannel manually with no PAgP as channel-group 3 between S3 and S1 Fast
Ethernet switchports 0/17-20.
6. Configure all three resulting virtual or logical interfaces (port-channel interfaces) as trunks and allowing only VLANs 10 and 20.
7. Verify the EtherChannels with show etherchannel commands and by pinging from PC0 to PC2 and PC1 to PC3.
If your gateway goes down it is a good idea to have a backup that takes over immediately. Using Cisco's Hot Standby Routing Protocol (HSRP) you can configure a router to be an automatic backup gateway without having to change all of your network client's default gateways, by reconfiguring your DHCP server, and releasing all of the gateway addresses on your network.
In this graded Packet Tracer activity you configure HSRP to create active and standby router gateways.
In the activity, R1 is the current gateway router at 192.168.1.2. Your task is to configure a virtual IP address on both router R1 and R2 G0/0 interfaces. You will configure R1 as the active router and R2 as the standby. Once that is done you will change the default gateway address on PC-A to the new virtual IP address and test. Download the Packet Tracer file and following along with my video tutorial.
1. Configure router R1 G0/0 interface with the following hot standby attributes:
standby 1 ip address 192.168.1.1
standby 1 priority 105
standby 1 preempt
standby 1 track g0/1 2. Configure router R2 G0/0 interface with the following hot standby attributes:
standby 1 ip address 192.168.1.1 3. Change the default gateway on PC-A to 192.168.1.1
4. Disable either of the Ethernet links to R1 and test to see if you can still ping the ISP.
In this graded Packet Tracer 6.1 activity you will need to configure two Catalyst 2960 switches with named VLANs. A trunk between the two switches, and a management IP address on each switch using switched virtual interfaces (SVIs). You will also need to configure hostnames on the switches and each PC with an IP address and subnet mask.
1. Configure the PCs IP address based on their host address label and the VLAN color code
2. Configure switch hostnames based on their labels
3. Configure the switch VLAN numbers and VLAN names according to the diagram
4. Configure Interface VLAN88 (SVI) addresses on both switches (see diagram)
5. Configure the switchports as access ports in VLANs according to the diagram
6. Configure G0/1 as a Trunk. Allow the listed VLANs only across the trunk and configure the Native VLAN as shown
7. Shutdown G0/2
For this graded activity you will need Packet Tracer version 6.1 or higher.