Home > Articles > Certification > Cisco Certification > CCNP

  • Print
  • + Share This
This chapter is from the book

This chapter is from the book

Configuration Example: Inter-VLAN Communication

Figure 4-1 shows the network topology for the configuration that follows, which shows how to configure inter-VLAN communication using commands covered in this chapter. Some commands used in this configuration are from previous chapters.

Figure 4-1

Figure 4-1 Network Topology for Inter-VLAN Communication Configuration

ISP Router

Router>enable

Moves to privileged mode.

Router>#configure terminal

Moves to global configuration mode.

Router(config)#hostname ISP

Sets the host name.

ISP(config)#interface loopback 0

Moves to interface configuration mode.

ISP(config-if)#description simulated address representing remote website

Sets the locally significant interface description.

ISP(config-if)#ip address 198.133.219.1 255.255.255.0

Assigns IP address and netmask.

ISP(config-if)#interface serial 0/0/0

Moves to interface configuration mode.

ISP(config-if)#description WAN link to the Corporate Router

Sets the locally significant interface description.

ISP(config-if)#ip address 192.31.7.5 255.255.255.252

Assigns IP address and netmask.

ISP(config-if)#clock rate 56000

Assigns a clock rate to the interface—DCE cable is plugged in to this interface.

ISP(config-if)#no shutdown

Enables the interface.

ISP(config-if)#exit

Returns to global configuration mode.

ISP(config-if)#router eigrp 10

Creates Enhanced Interior Gateway Routing Protocol (EIGRP) routing process 10.

ISP(config-router)#network 198.133.219.0

Advertises directly connected networks (classful address only).

ISP(config-router)#network 192.31.7.0

Advertises directly connected networks (classful address only).

ISP(config-router)#no auto-summary

Disables auto summarization.

ISP(config-router)#exit

Returns to global configuration mode.

ISP(config)#exit

Returns to privileged mode.

ISP#copy running-config startup-config

Saves the configuration to NVRAM.

CORP Router

Router>enable

Moves to privileged mode.

Router>#configure terminal

Moves to global configuration mode.

Router(config)#hostname CORP

Sets the host name.

ISP(config)#interface serial 0/0/0

Moves to interface configuration mode.

CORP(config-if)#description link to ISP

Sets the locally significant interface description.

CORP(config-if)#ip address 192.31.7.6 255.255.255.252

Assigns IP address and netmask.

CORP(config-if)#no shutdown

Enables the interface.

CORP(config)#interface fastethernet 0/1

Moves to interface configuration mode.

CORP(config-if)#description link to 3560 Switch

Sets the locally significant interface description.

CORP(config-if)#ip address 172.31.1.5 255.255.255.252

Assigns the IP address and netmask.

CORP(config-if)#no shutdown

Enables the interface.

CORP(config-if)#exit

Returns to global configuration mode.

CORP(config)#interface fastethernet 0/0

Enters interface configuration mode.

CORP(config-if)#duplex full

Enables full-duplex operation to ensure trunking will take effect between here and L2Switch2.

CORP(config-if)#no shutdown

Enables the interface.

CORP(config-if)#interface fastethernet 0/0.1

Creates a virtual subinterface and moves to subinterface configuration mode.

CORP(config-subif)#description Management VLAN 1 – Native VLAN

Sets the locally significant interface description.

CORP(config-subif)#encapsulation dot1q 1 native

Assigns VLAN 1 to this subinterface. VLAN 1 is the native VLAN. This subinterface uses the 802.1Q trunking protocol.

CORP(config-subif)#ip address 192.168.1.1 255.255.255.0

Assigns the IP address and netmask.

CORP(config-subif)#interface fastethernet 0/0.10

Creates a virtual subinterface and moves to subinterface configuration mode.

CORP(config-subif)#description Sales VLAN 10

Sets the locally significant interface description.

CORP(config-subif)#encapsulation dot1q 10

Assigns VLAN 10 to this subinterface. This subinterface uses the 802.1Q trunking protocol.

CORP(config-subif)#ip address 192.168.10.1 255.255.255.0

Assigns the IP address and netmask.

CORP(config-subif)#interface fastethernet 0/0.20

Creates a virtual subinterface and moves to subinterface configuration mode.

CORP(config-subif)#description Engineering VLAN 20

Sets the locally significant interface description.

CORP(config-subif)#encapsulation dot1q 20

Assigns VLAN 20 to this subinterface. This subinterface uses the 802.1Q trunking protocol.

CORP(config-subif)#ip address 192.168.20.1 255.255.255.0

Assigns the IP address and netmask.

CORP(config-subif)#interface fastethernet 0/0.30

Creates a virtual subinterface and moves to subinterface configuration mode.

CORP(config-subif)#description Marketing VLAN 30

Sets the locally significant interface description.

CORP(config-subif)#encapsulation dot1q 30

Assigns VLAN 30 to this subinterface. This subinterface uses the 802.1Q trunking protocol.

CORP(config-subif)#ip add 192.168.30.1 255.255.255.0

Assigns the IP address and netmask.

CORP(config-subif)#exit

Returns to interface configuration mode.

CORP(config-if)#exit

Returns to global configuration mode.

CORP(config)#router eigrp 10

Creates EIGRP routing process 10 and moves to router configuration mode.

CORP(config-router)#network 192.168.1.0

Advertises the 192.168.1.0 network.

CORP(config-router)#network 192.168.10.0

Advertises the 192.168.10.0 network.

CORP(config-router)#network 192.168.20.0

Advertises the 192.168.20.0 network.

CORP(config-router)#network 192.168.30.0

Advertises the 192.168.30.0 network.

CORP(config-router)#network 172.31.0.0

Advertises the 172.31.0.0 network.

CORP(config-router)#network 192.31.7.0

Advertises the 192.31.7.0 network.

CORP(config-router)#no auto-summary

Turns off automatic summarization at classful boundary.

CORP(config-router)#exit

Returns to global configuration mode.

CORP(config)#exit

Returns to privileged mode.

CORP#copy running-config startup-config

Saves the configuration in NVRAM.

L2Switch2 (Catalyst 2960)

Switch>enable

Moves to privileged mode.

Switch#configure terminal

Moves to global configuration mode.

Switch(config)#hostname L2Switch2

Sets the host name.

L2Switch2(config)#vlan 10

Creates VLAN 10 and enters VLAN-configuration mode.

L2Switch2(config-vlan)#name Sales

Assigns a name to the VLAN.

L2Switch2(config-vlan)#exit

Returns to global configuration mode.

L2Switch2(config)#vlan 20

Creates VLAN 20 and enters VLAN-configuration mode.

L2Switch2(config-vlan)#name Engineering

Assigns a name to the VLAN.

L2Switch2(config-vlan)#vlan 30

Creates VLAN 30 and enters VLAN-configuration mode. Note that you do not have to exit back to global configuration mode to execute this command.

L2Switch2(config-vlan)#name Marketing

Assigns a name to the VLAN.

L2Switch2(config-vlan)#exit

Returns to global configuration mode.

L2Switch2(config)#interface range fastethernet 0/2 - 4

Enables you to set the same configuration parameters on multiple ports at the same time.

L2Switch2(config-if-range)#switchport mode access

Sets ports 2–4 as access ports.

L2Switch2(config-if-range)#switchport access vlan 10

Assigns ports 2–4 to VLAN 10.

L2Switch2(config-if-range)#interface range fastethernet 0/5 - 8

Enables you to set the same configuration parameters on multiple ports at the same time.

L2Switch2(config-if-range)#switchport mode access

Sets ports 5–8 as access ports.

L2Switch2(config-if-range)#switchport access vlan 20

Assigns ports 5–8 to VLAN 20.

L2Switch2(config-if-range)#interface range fastethernet 0/9 - 12

Enables you to set the same configuration parameters on multiple ports at the same time.

L2Switch2(config-if-range)#switchport mode access

Sets ports 9–12 as access ports.

L2Switch2(config-if-range)#switchport access vlan 30

Assigns ports 9–12 to VLAN 30.

L2Switch2(config-if-range)#exit

Returns to global configuration mode.

L2Switch2(config)#interface fastethernet 0/1

Moves to interface configuration mode.

L2Switch2(config)#description Trunk Link to CORP Router

Sets locally significant interface description.

L2Switch2(config-if)#switchport mode trunk

Puts the interface into trunking mode and negotiates to convert the link into a trunk link.

L2Switch2(config-if)#exit

Returns to global configuration mode.

L2Switch2(config)#interface vlan 1

Creates virtual interface for VLAN 1 and enters interface configuration mode.

L2Switch2(config-if)#ip address 192.168.1.2 255.255.255.0

Assigns the IP address and netmask.

L2Switch2(config-if)#no shutdown

Enables the interface.

L2Switch2(config-if)#exit

Returns to global configuration mode.

L2Switch2(config)#ip default-gateway 192.168.1.1

Assigns the default gateway address.

L2Switch2(config)#exit

Returns to privileged mode.

L2Switch2#copy running-config startup-config

Saves the configuration in NVRAM.

L3Switch1 (Catalyst 3560)

Switch>enable

Moves to privileged mode.

Switch#configure terminal

Moves to global configuration mode.

Switch(config)#hostname L3Switch1

Sets the host name.

L3Switch1(config)#vtp mode sever

Changes the switch to VTP server mode.

L3Switch1(config)#vtp domain testdomain

Configures the VTP domain name to testdomain.

L3Switch1(config)#vlan 10

Creates VLAN 10 and enters VLAN-configuration mode.

L3Switch1(config-vlan)#name Accounting

Assigns a name to the VLAN.

L3Switch1(config-vlan)#exit

Returns to global configuration mode.

L3Switch1(config)#vlan 20

Creates VLAN 20 and enters VLAN-configuration mode.

L3Switch1(config-vlan)#name Marketing

Assigns a name to the VLAN.

L3Switch1(config-vlan)#exit

Returns to global configuration mode.

L3Switch1(config)#interface gigabitethernet 0/1

Moves to interface configuration mode.

L3Switch1(config-if)#switchport trunk encapsulation dot1q

Specifies 802.1Q encapsulation on the trunk link.

L3Switch1(config-if)#switchport mode trunk

Puts the interface into trunking mode and negotiates to convert the link into a trunk link.

L3Switch1(config-if)#exit

Returns to global configuration mode.

L3Switch1(config)#ip routing

Enables IP routing on this device.

L3Switch1(config)#interface vlan 1

Creates a virtual interface for VLAN 1 and enters interface configuration mode.

L3Switch1(config-if)#ip address 172.16.1.1 255.255.255.0

Assigns the IP address and netmask.

L3Switch1(config-if)#no shutdown

Enables the interface.

L3Switch1(config-if)#interface vlan 10

Creates a virtual interface for VLAN 10 and enters interface configuration mode.

L3Switch1(config-if)#ip address 172.16.10.1 255.255.255.0

Assigns the IP address and mask.

L3Switch1(config-if)#no shutdown

Enables the interface.

L3Switch1(config-if)#interface vlan 20

Creates a virtual interface for VLAN 20 and enters interface configuration mode.

L3Switch1(config-if)#ip address 172.16.20.1 255.255.255.0

Assigns the IP address and mask.

L3Switch1(config-if)#no shutdown

Enables the interface.

L3Switch1(config-if)#exit

Returns to global configuration mode.

L3Switch1(config)#interface fastethernet 0/24

Enters interface configuration mode.

L3Switch1(config-if)#no switchport

Creates a Layer 3 port on the switch.

L3Switch1(config-if)#ip address 172.31.1.6 255.255.255.252

Assigns the IP address and netmask.

L3Switch1(config-if)#exit

Returns to global configuration mode.

L3Switch1(config)#router eigrp 10

Creates EIGRP routing process 10 and moves to router config mode.

L3Switch1(config-router)#network 172.16.0.0

Advertises the 172.16.0.0 classful network.

L3Switch1(config-router)#network 172.31.0.0

Advertises the 172.31.0.0 classful network.

L3Switch1(config-router)#no auto-summary

Turns off automatic summarization at classful boundary.

L3Switch1(config-router)#exit

Applies changes and returns to global configuration mode.

L3Switch1(config)#exit

Returns to privileged mode.

L3Switch1#copy running-config startup-config

Saves configuration in NVRAM.

L2Switch1 (Catalyst 2960)

Switch>enable

Moves to privileged mode.

Switch#configure terminal

Moves to global configuration mode.

Switch(config)#hostname L2Switch1

Sets the host name.

L2Switch1(config)#vtp domain testdomain

Configures the VTP domain name to testdomain.

L2Switch1(config)#vtp mode client

Changes the switch to VTP client mode.

L2Switch1(config)#interface range fastethernet 0/1 - 4

Enables you to set the same configuration parameters on multiple ports at the same time.

L2Switch1(config-if-range)#switchport mode access

Sets ports 1–4 as access ports.

L2Switch1(config-if-range)#switchport access vlan 10

Assigns ports 1–4 to VLAN 10.

L2Switch1(config-if-range)#interface range fastethernet 0/5 - 8

Enables you to set the same configuration parameters on multiple ports at the same time.

L2Switch1(config-if-range)#switchport mode access

Sets ports 5–8 as access ports.

L2Switch1(config-if-range)#switchport access vlan 20

Assigns ports 5–8 to VLAN 20.

L2Switch1(config-if-range)#exit

Returns to global configuration mode.

L2Switch1(config)#interface gigabitethernet 0/1

Moves to interface configuration mode.

L2Switch1(config-if)#switchport mode trunk

Puts the interface into trunking mode and negotiates to convert the link into a trunk link.

L2Switch1(config-if)#exit

Returns to global configuration mode.

L2Switch1(config)#interface vlan 1

Creates a virtual interface for VLAN 1 and enters interface configuration mode.

L2Switch1(config-if)#ip address 172.16.1.2 255.255.255.0

Assigns the IP address and netmask.

L2Switch1(config-if)#no shutdown

Enables the interface.

L2Switch1(config-if)#exit

Returns to global configuration mode.

L2Switch1(config)#ip default-gateway 172.16.1.1

Assigns the default gateway address.

L2Switch1(config)#exit

Returns to privileged mode.

L2Switch1#copy running-config startup-config

Saves the configuration in NVRAM.

  • + Share This
  • 🔖 Save To Your Account

InformIT Promotional Mailings & Special Offers

I would like to receive exclusive offers and hear about products from InformIT and its family of brands. I can unsubscribe at any time.

Overview


Pearson Education, Inc., 221 River Street, Hoboken, New Jersey 07030, (Pearson) presents this site to provide information about products and services that can be purchased through this site.

This privacy notice provides an overview of our commitment to privacy and describes how we collect, protect, use and share personal information collected through this site. Please note that other Pearson websites and online products and services have their own separate privacy policies.

Collection and Use of Information


To conduct business and deliver products and services, Pearson collects and uses personal information in several ways in connection with this site, including:

Questions and Inquiries

For inquiries and questions, we collect the inquiry or question, together with name, contact details (email address, phone number and mailing address) and any other additional information voluntarily submitted to us through a Contact Us form or an email. We use this information to address the inquiry and respond to the question.

Online Store

For orders and purchases placed through our online store on this site, we collect order details, name, institution name and address (if applicable), email address, phone number, shipping and billing addresses, credit/debit card information, shipping options and any instructions. We use this information to complete transactions, fulfill orders, communicate with individuals placing orders or visiting the online store, and for related purposes.

Surveys

Pearson may offer opportunities to provide feedback or participate in surveys, including surveys evaluating Pearson products, services or sites. Participation is voluntary. Pearson collects information requested in the survey questions and uses the information to evaluate, support, maintain and improve products, services or sites, develop new products and services, conduct educational research and for other purposes specified in the survey.

Contests and Drawings

Occasionally, we may sponsor a contest or drawing. Participation is optional. Pearson collects name, contact information and other information specified on the entry form for the contest or drawing to conduct the contest or drawing. Pearson may collect additional personal information from the winners of a contest or drawing in order to award the prize and for tax reporting purposes, as required by law.

Newsletters

If you have elected to receive email newsletters or promotional mailings and special offers but want to unsubscribe, simply email information@informit.com.

Service Announcements

On rare occasions it is necessary to send out a strictly service related announcement. For instance, if our service is temporarily suspended for maintenance we might send users an email. Generally, users may not opt-out of these communications, though they can deactivate their account information. However, these communications are not promotional in nature.

Customer Service

We communicate with users on a regular basis to provide requested services and in regard to issues relating to their account we reply via email or phone in accordance with the users' wishes when a user submits their information through our Contact Us form.

Other Collection and Use of Information


Application and System Logs

Pearson automatically collects log data to help ensure the delivery, availability and security of this site. Log data may include technical information about how a user or visitor connected to this site, such as browser type, type of computer/device, operating system, internet service provider and IP address. We use this information for support purposes and to monitor the health of the site, identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents and appropriately scale computing resources.

Web Analytics

Pearson may use third party web trend analytical services, including Google Analytics, to collect visitor information, such as IP addresses, browser types, referring pages, pages visited and time spent on a particular site. While these analytical services collect and report information on an anonymous basis, they may use cookies to gather web trend information. The information gathered may enable Pearson (but not the third party web trend services) to link information with application and system log data. Pearson uses this information for system administration and to identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents, appropriately scale computing resources and otherwise support and deliver this site and its services.

Cookies and Related Technologies

This site uses cookies and similar technologies to personalize content, measure traffic patterns, control security, track use and access of information on this site, and provide interest-based messages and advertising. Users can manage and block the use of cookies through their browser. Disabling or blocking certain cookies may limit the functionality of this site.

Do Not Track

This site currently does not respond to Do Not Track signals.

Security


Pearson uses appropriate physical, administrative and technical security measures to protect personal information from unauthorized access, use and disclosure.

Children


This site is not directed to children under the age of 13.

Marketing


Pearson may send or direct marketing communications to users, provided that

  • Pearson will not use personal information collected or processed as a K-12 school service provider for the purpose of directed or targeted advertising.
  • Such marketing is consistent with applicable law and Pearson's legal obligations.
  • Pearson will not knowingly direct or send marketing communications to an individual who has expressed a preference not to receive marketing.
  • Where required by applicable law, express or implied consent to marketing exists and has not been withdrawn.

Pearson may provide personal information to a third party service provider on a restricted basis to provide marketing solely on behalf of Pearson or an affiliate or customer for whom Pearson is a service provider. Marketing preferences may be changed at any time.

Correcting/Updating Personal Information


If a user's personally identifiable information changes (such as your postal address or email address), we provide a way to correct or update that user's personal data provided to us. This can be done on the Account page. If a user no longer desires our service and desires to delete his or her account, please contact us at customer-service@informit.com and we will process the deletion of a user's account.

Choice/Opt-out


Users can always make an informed choice as to whether they should proceed with certain services offered by InformIT. If you choose to remove yourself from our mailing list(s) simply visit the following page and uncheck any communication you no longer want to receive: www.informit.com/u.aspx.

Sale of Personal Information


Pearson does not rent or sell personal information in exchange for any payment of money.

While Pearson does not sell personal information, as defined in Nevada law, Nevada residents may email a request for no sale of their personal information to NevadaDesignatedRequest@pearson.com.

Supplemental Privacy Statement for California Residents


California residents should read our Supplemental privacy statement for California residents in conjunction with this Privacy Notice. The Supplemental privacy statement for California residents explains Pearson's commitment to comply with California law and applies to personal information of California residents collected in connection with this site and the Services.

Sharing and Disclosure


Pearson may disclose personal information, as follows:

  • As required by law.
  • With the consent of the individual (or their parent, if the individual is a minor)
  • In response to a subpoena, court order or legal process, to the extent permitted or required by law
  • To protect the security and safety of individuals, data, assets and systems, consistent with applicable law
  • In connection the sale, joint venture or other transfer of some or all of its company or assets, subject to the provisions of this Privacy Notice
  • To investigate or address actual or suspected fraud or other illegal activities
  • To exercise its legal rights, including enforcement of the Terms of Use for this site or another contract
  • To affiliated Pearson companies and other companies and organizations who perform work for Pearson and are obligated to protect the privacy of personal information consistent with this Privacy Notice
  • To a school, organization, company or government agency, where Pearson collects or processes the personal information in a school setting or on behalf of such organization, company or government agency.

Links


This web site contains links to other sites. Please be aware that we are not responsible for the privacy practices of such other sites. We encourage our users to be aware when they leave our site and to read the privacy statements of each and every web site that collects Personal Information. This privacy statement applies solely to information collected by this web site.

Requests and Contact


Please contact us about this Privacy Notice or if you have any requests or questions relating to the privacy of your personal information.

Changes to this Privacy Notice


We may revise this Privacy Notice through an updated posting. We will identify the effective date of the revision in the posting. Often, updates are made to provide greater clarity or to comply with changes in regulatory requirements. If the updates involve material changes to the collection, protection, use or disclosure of Personal Information, Pearson will provide notice of the change through a conspicuous notice on this site or other appropriate way. Continued use of the site after the effective date of a posted revision evidences acceptance. Please contact us if you have questions or concerns about the Privacy Notice or any objection to any revisions.

Last Update: November 17, 2020