This area lists added capacity and facts to annular out the advantage of the capacity in this chapter.
Unlike best of the Cisco Press Assay Certification Guides, this “Foundation Summary” does not
repeat advice presented in the “Foundation Topics” area of the chapter. Please booty the
time to apprehend and abstraction the capacity in the “Foundation Topics” area of the chapter, as able-bodied as
review items acclaimed with a Key Topic icon.
Table 2-10 lists some of the best accepted IOS commands accompanying to the capacity in this chapter.
(The command syntax was affected from the Catalyst 3550 Multilayer About-face Command
Reference, 12.1(20)EA2. Note that some about-face platforms may accept differences in the
command syntax.)
Table 2-10 Catalyst IOS Commands Accompanying to Affiliate 2
Command Description
show mac address-table [aging-time |
count | activating | static] [address hw-addr]
[interface interface-id] [vlan vlan-id]
Displays the MAC abode table; the security
option displays advice about the belted or
static settings
show interfaces [interface-id | vlan vlan-id]
switchport | trunk]
Displays abundant advice about an interface
operating as an admission anchorage or a trunk
show vlan [brief | id vlan-id |
name vlan-name | summary]
EXEC command that lists advice about
VLAN
show vlan [vlan] Displays VLAN information
show vtp cachet Lists VTP agreement and cachet information
switchport approach {access | dot1q-tunnel |
dynamic {auto | desirable} | trunk}
Configuration command ambience nontrunking
(access), trunking, and activating trunking (auto
and desirable) parameters
switchport nonegotiate Interface subcommand that disables DTP
messages; interface charge be configured as block or
access port
switchport block {allowed vlan vlan-list} |
{encapsulation {dot1q | isl | negotiate}} |
{native vlan vlan-id} |
{pruning vlan vlan-list}
Interface subcommand acclimated to set ambit used
when the anchorage is trunking
switchport admission vlan vlan-id Interface subcommand that statically configures
the interface as a affiliate of that one VLAN
54 Affiliate 2: Virtual LANs and VLAN Trunking
Table 2-11 lists the commands accompanying to VLAN creation—both the VLAN database mode
configuration commands (reached with the vlan database advantaged approach command) and the
normal agreement approach commands.
Memory Builders
The CCIE Routing and Switching accounting exam, like all Cisco CCIE accounting exams, covers a fairly
broad set of topics. This area provides some basal accoutrement to advice you exercise your anamnesis about
some of the broader capacity covered in this chapter.
Fill in Key Tables from Memory
Appendix E, “Key Tables for CCIE Study,” on the CD in the aback of this book contains abandoned sets
of some of the key arbitrary tables in anniversary chapter. Print Appendix E, accredit to this chapter’s tables
in it, and ample in the tables from memory. Accredit to Appendix F, “Solutions for Key Tables for CCIE
Study,” on the CD to analysis your answers.
Definitions
Next, booty a few moments to address bottomward the definitions for the afterward terms:
VLAN, advertisement domain, DTP, VTP pruning, 802.1Q, ISL, built-in VLAN,
encapsulation, clandestine VLAN, abandoned port, association VLAN, isolated
VLAN, 802.1Q-in-Q, Layer 2 agreement tunneling
NOTE Some command ambit may not be listed in Table 2-11.
Table 2-11 Catalyst 3550 VLAN Database and Agreement Approach Command List
VLAN Database Configuration
vtp {domain domain-name | password
password | pruning | v2-mode |
{server | applicant | transparent}}
vtp {domain domain-name | book filename |
interface name | approach {client | server |
transparent} | countersign countersign | pruning |
version number}
vlan vlan-id [backupcrf {enable | disable}]
[mtu mtu-size] [name vlan-name] [parent
parent-vlan-id] [state {suspend | active}]
vlan vlan-id1
show {current | proposed | difference} No equivalent
apply | arrest | displace No equivalent
1Creates the VLAN and places the user in VLAN agreement mode, area commands analogous the VLAN database
mode options of the vlan command are acclimated to set the aforementioned parameters.
Memory Builders 55
Refer to the Glossary to analysis your answers.
Further Reading
The capacity in this affiliate tend to be covered in hardly added detail in CCNP Switching exam
preparation books. For added capacity on these topics, accredit to Authorized Self-Study Guide: Building
Cisco Multilayer Switched Networks (BCMSN), Fourth Edition, and CCNP BCMSN Official Exam
Certification Guide, Fourth Edition.
Cisco LAN Switching, by Kennedy Clark and Kevin Hamilton, is an accomplished advertence for
LAN-related capacity in general, and absolutely actual advantageous for CCIE accounting and lab exam
preparation.