• SOHO Networking, Chapter 2
• Bridges, Routers, Switches, Oh My! (watch the RealMedia stream) [weblink]

1. Describe what a transparent bridge will do when it receives a frame with a broadcast address in the destination address field on one of it's input (ingress) interfaces.

2. Match the term on the left with most appropriate description on the right.

___ 64 bytes	a. Minimum 10/100 Mb/s Ethernet frame size
___ Collision Detection	b. Mostly marketing term for a bridge
___ Spanning Tree	c. IEEE 48-bit broadcast address
___ ff:ff:ff:ff:ff:ff	d. Protocol to ensure loop-free topology
___ LAN switch	e. Part of a shared medium arbitration scheme

3. Using the following diagram, answer the questions below:

Assume hosts 2, 3 and 4 have all sent packets directly to host 1 within the last minute and each has received a reply from host 1. Fill in the missing fields of these bridge address tables.

LAN switch #1

Destination Address	Associated Port
?	port 1
40:00:02:0b:bb:bb	?
40:00:03:0c:cc:cc	port 2
?	?

LAN switch #2

Destination Address	Associated Port
?	port 1
40:00:02:0b:bb:bb	?
40:00:03:0c:cc:cc	port 2
?	?

4. Using the previous diagram, now assume that host #1 transmits frame to host #4 directly. Describe the path the frame will follow and who will see it.

5. There is a Cisco 2950 Ethernet LAN switch in LAN lab room 659. You can remotely access it by visiting telnet://140.192.40.2 in your browser or by typing telnet 140.192.40.2 at a command line. The password is "user" without quotes. Login to the switch and answer the following questions:

• Execute a "show version" command. How many ethernet ports and of what type are available?
• Execute a 'show mac-address-table" command. What are the bridge address table entries associated with Fast Ethernet module 0, port 1 (Fa0/1)?
• Execute a 'show vlan' command. Which ports are members of the default VLAN?
• Enter a 'show interface fa0/1' command. Enter a 'show interface counters' command. Enter a 'show interface status' command. Feel free to explore a bit more. Simply type the '?' key anywhere on the command line for additional commands or for possible command completions.