1 / 42

Any Questions?

Any Questions?. Chapter 17 WAN Configuration. Configuring Point-to-Point WANs Configuring and Troubleshooting Internet Access Routers. Do I know this?. Go through the Quiz- 5 minutes.

omana
Download Presentation

Any Questions?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Any Questions?

  2. Chapter 17 WAN Configuration • Configuring Point-to-Point WANs • Configuring and Troubleshooting Internet Access Routers

  3. Do I know this? Go through the Quiz- 5 minutes

  4. 1. Routers R1 and R2 connect using a leased line, with both routers using their respective Serial 0/0 interfaces. The routers can currently route packets over the link, which uses HDLC. Which of the following commands would be required to migrate the configuration to use PPP? a. encapsulation ppp b. no encapsulation hdlc c. clock rate 128000 d. bandwidth 128000

  5. 1. Routers R1 and R2 connect using a leased line, with both routers using their respective Serial 0/0 interfaces. The routers can currently route packets over the link, which uses HDLC. Which of the following commands would be required to migrate the configuration to use PPP? a. encapsulation ppp b. no encapsulation hdlc c. clock rate 128000 d. bandwidth 128000 Answer A

  6. 2. Routers R1 and R2 have just been installed in a new lab. The routers will connect using a back-to-back serial link, using interface serial 0/0 on each router. Which of the following is true about how to install and configure this connection? a. If the DCE cable is installed in R1, the clock rate command must be configured on R2’s serial interface. b. If the DTE cable is installed in R1, the clock rate command must be configured on R2’s serial interface. c. If the clock rate 128000 command is configured on R1, the bandwidth 128 command must be configured on R2. d. None of the answers are correct.

  7. 2. Routers R1 and R2 have just been installed in a new lab. The routers will connect using a back-to-back serial link, using interface serial 0/0 on each router. Which of the following is true about how to install and configure this connection? a. If the DCE cable is installed in R1, the clock rate command must be configured on R2’s serial interface. b. If the DTE cable is installed in R1, the clock rate command must be configured on R2’s serial interface. c. If the clock rate 128000 command is configured on R1, the bandwidth 128 command must be configured on R2. d. None of the answers are correct. Answer B

  8. 3. Two brand new Cisco routers have been ordered and installed in two different sites, 10 miles apart. A 768-kbps leased line has been installed between the two routers. Which of the following commands is required on at least one of the routers in order to forward packets over the leased line, using PPP as the data link protocol? a. no encapsulation hdlc b. encapsulation ppp c. clock rate 768000 d. bandwidth 768 e. description this is the link

  9. 3. Two brand new Cisco routers have been ordered and installed in two different sites, 10 miles apart. A 768-kbps leased line has been installed between the two routers. Which of the following commands is required on at least one of the routers in order to forward packets over the leased line, using PPP as the data link protocol? a. no encapsulation hdlc b. encapsulation ppp c. clock rate 768000 d. bandwidth 768 e. description this is the link Answer B

  10. 4. When configuring a DHCP server on an Internet access router using SDM, which of the following settings is typically configured on the Internet access router? a. The MAC addresses of the PCs on the local LAN b. The IP address of the ISP’s router on the common cable or DSL link c. The range of IP addresses to be leased to hosts on the local LAN d. The DNS server IP address(es) learned via DHCP from the ISP

  11. 4. When configuring a DHCP server on an Internet access router using SDM, which of the following settings is typically configured on the Internet access router? a. The MAC addresses of the PCs on the local LAN b. The IP address of the ISP’s router on the common cable or DSL link c. The range of IP addresses to be leased to hosts on the local LAN d. The DNS server IP address(es) learned via DHCP from the ISP Answer C, D

  12. 5. When configuring an access router with SDM, to use DHCP client services to learn an IP address from an ISP, and configure PAT at the same time, which of the following is true? a. The SDM configuration wizard requires PAT to be configured if the DHCP client function has been chosen to be configured. b. The SDM configuration wizard considers any interfaces that already have IP addresses configured as candidates to become inside interfaces for PAT. c. The SDM configuration wizard assumes the interface on which DHCP client services have been enabled should be an inside interface. d. None of the answers are correct.

  13. 5. When configuring an access router with SDM, to use DHCP client services to learn an IP address from an ISP, and configure PAT at the same time, which of the following is true? a. The SDM configuration wizard requires PAT to be configured if the DHCP client function has been chosen to be configured. b. The SDM configuration wizard considers any interfaces that already have IP addresses configured as candidates to become inside interfaces for PAT. c. The SDM configuration wizard assumes the interface on which DHCP client services have been enabled should be an inside interface. d. None of the answers are correct. Answer B

  14. 6. Which of the following is true about the configuration process using SDM? a. SDM uses an SSH connection via the console or an IP network to configure a router. b. SDM uses a web interface from the IP network or from the console. c. SDM loads configuration commands into a router at the end of each wizard (after the user clicks the Finish button), saving the configuration in the running-config and startup-config files. d. None of these answers are correct.

  15. 6. Which of the following is true about the configuration process using SDM? a. SDM uses an SSH connection via the console or an IP network to configure a router. b. SDM uses a web interface from the IP network or from the console. c. SDM loads configuration commands into a router at the end of each wizard (after the user clicks the Finish button), saving the configuration in the running-config and startup-config files. d. None of these answers are correct. Answer D

  16. 7. Which of the following are common problems when configuring a new Internet access router’s Layer 3 features? a. Omitting commonly used but optional information from the DHCP server features—for example, the IP address(es) of the DNS server(s) b. Setting the wrong interfaces as the NAT inside and outside interfaces c. Forgetting to configure the same routing protocol that the ISP uses d. Forgetting to enable CDP on the Internet-facing interface

  17. 7. Which of the following are common problems when configuring a new Internet access router’s Layer 3 features? a. Omitting commonly used but optional information from the DHCP server features—for example, the IP address(es) of the DNS server(s) b. Setting the wrong interfaces as the NAT inside and outside interfaces c. Forgetting to configure the same routing protocol that the ISP uses d. Forgetting to enable CDP on the Internet-facing interface Answer A, B

  18. Any Questions?

  19. Configuring POINT to POINT WANS • Layer 1 and 2 • Check status on show interfaces • Layer 2 Serial Interface Configuration • Encapsulation • Layer 3 Interface Config • IP Address • No shutdown • Bandwidth Pg 542

  20. HDLC Config • HDLC is default encapsulation • Layer 1 • Will be working if there is voltage • Layer 2 • Check Encapsulation • Show interfaces serial 0 • Set Encapsulation-if necessary • Router1#enable • Router1(config)#interface serial 0 • Router1(config-if)# encapsulation hdlc Pg 542

  21. PPP Config • HDLC is default encapsulation • Layer 1 • Will be working if there is voltage • Layer 2 • Check Encapsulation • Show interfaces serial 0 • Set Encapsulation-if necessary • Router1#enable • Router1(config)#interface serial 0 • Router1(config-if)# encapsulation ppp Pg 545

  22. Encapsulation Must Match • On point to point connections as well as back to back connections in the lab the encapsulation on the routers serial interfaces must match

  23. Any Questions?

  24. Quick Lab Work Router1 Router2 Router3 Router4 TFTP Server Switch 1 IP Addresses Router1 S0-192.168.10.129 /25 Router 3 S0-192.168.10.126 /25 Router1-F0-10.1.0.1 /24 Router 3 F0-172.16.10.1 /17 Switch 1-10.1.0.10 /24 Router 4 F0-172.16.100.1 /17 TFTP-10.1.0.100 /24 Router 2 S0-192.168.10.254 /25 Router 2 S1-192.168.10.1 /25

  25. LAB-Configure IP addresses • How to config on Switch • Configure Terminal • Interface vlan1 • Ip address 10.1.0.10 255.255.255.0 • No shutdown • Exit • Ip default-gateway 10.1.0.1

  26. Lab-Configure Routers • How to config on router Fastethernet • Configure Terminal • Interface fastethernet 0 • Ip address 10.1.0.1 255.255.255.0 • No shutdown • Exit

  27. Lab-Configure Routers • How to config on router Serial • Configure Terminal • Interface Serial 0 • Ip address 192.168.10.129 255.255.255.128 • Clock rate 64000 • No shutdown • Exit

  28. IOS from TFTP server • Lets look • c2600-ipvoicek9-mz.124-18.bin

  29. Configuring and Troubleshooting Internet Access Routers • Home routers • DHCP, DNS, NAT • All pre-configured • Enterprise Routers • DHCP, DNS, NAT • Capable, but these features are turned off Pg 546

  30. Configurations • Can be done through CLI • So far what we have used • Can be done through the Cisco Router and Security Device Manager (SDM) • In order to use SDM, you need an IP address from CLI config

  31. SDM • Needs to be installed in Router FLASH Memory • Can configure DHCP, and PAT

  32. Configure DHCP and PAT • To be a dhcp client you would use • Ip dhcp • On the interface config mode. Or use the SDM as is shown on the next slides.

  33. Configuring Port Address Translation • Also can be done through SDM • Set the interface that is on the cable modem to be the inside global address

  34. Summary of SDM Settings • The interface being configured is FastEthernet0/1. • FastEthernet0/1 will use DHCP client services to find its IP address. • PPoE encapsulation is disabled, which means that unencapsulated routing is used. • PAT is enabled, with FastEthernet0/0 as the inside interface, and FastEthernet0/1 as the outside interface. Pg 554

  35. Plan DHCP Server 1. Recall the private IP network and mask used on the local LAN and then choose a subset of that network that can be assigned to hosts using DHCP. 2. Make a note of the router’s IP address in that network; this address will be the local hosts’ default gateway. 3. Find the DNS server IP addresses learned by the router using DHCP client services, using the show dhcp server EXEC command; the routers will then be able to inform the DHCP clients on the local LAN about the DNS server IP address(es). 4. Find the domain name, again with the show dhcp server EXEC command. NOTE:Cisco uses the term DHCP Pool for the IP addresses that will be assigned to hosts Pg 555

  36. DHCP Using SDM ■ Range of addresses to be assigned with DHCP ■ DNS server IP addresses ■ Domain name ■ Default router settings Pg 557

  37. Verification R1#show ip dhcp binding Bindings from all pools not associated with VRF: IP address Client-ID/Hardware address/User name Lease expiration Type 192.168.1.101 0063.6973.636f.2d May 12 2007 08:24 PM Automatic 192.168.1.111 0100.1517.1973.2c May 12 2007 08:26 PM Automatic R1#show ip nat translations Pro Inside global Inside local Outside local Outside global tcp 64.100.1.1:36486 192.168.1.101:36486 192.168.7.1:80 192.168.7.1:80 udp 64.100.1.1:1027 192.168.1.111:1027 198.133.219.2:53 198.133.219.2:53 R1#clear ip nat translation * R1#show ip nat translations R1# Pg 558

More Related