Configuring HSRP. Global Knowledge Training LLC L5-1

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1 L5 Configuring HSRP Global Knowledge Training LLC L5-1

2 Objectives In this lab you will examine the hot standby router protocol (HSRP). First you will configure PxR2 similar to PxR1, so they are both possible default gateway candidates. You will then configure HSRP on both routers and examine its behavior. The objectives for this lab are: Configure PxR2 as a possible default gateway candidate. Configure PxR1 and PxR2 for HSRP. Explore HSRP and verify its behavior. Reconfigure pod devices for subsequent labs. Important Substitute your pod number for x and the router number for y in all instructions and commands. The passwords configured on the devices at this point are: Console and vty access: username: ccna, password: cisco enable secret: sanfran L5-2 Global Knowledge Training LLC

3 Lab Topology The following diagram illustrates the logical topology used in this lab, along with the IP addresses configured. Command List The following table lists the commands used in this lab, in alphabetical order. Cisco IOS Commands Used In This Lab Command #configure terminal #copy running-config startupconfig >enable (config-subif)#encapsulation dot1q vlan [native] (config)#end #exit (config)#interface type number (config)#[no] interface type number.subinterface Description Enters global configuration mode. Saves the running configuration (in RAM) into the startup configuration (in NVRAM). Enters the EXEC privileged mode. Configures trunking on a router interface and associates the vlan number with the subinterface. Terminates configuration mode. Exit the current mode and go up one level. Enters interface configuration mode. Enters configuration mode for the subinterface. With the no keyword deletes the subinterface. Global Knowledge Training LLC L5-3

4 (config-if)#[no] ip address address mask (config)#ip default-gateway address (config)#[no] ip route address (config-router)#network address wildcard-mask area area #ping [address] (config)#[no] router ospf process-id (config-router)#router-id id #show standby (config-if)#[no] shutdown (config-subif)#[no] standby group ip address (config-if-range)#[no] switchport access vlan vlan (config-if)#[no] switchport mode mode (config-if)#[no] switchport trunk allowed vlan vlan-list #traceroute address Assigns interface IP address and subnet mask. With the no keyword removes the address from the interface. Configures the specified IP address as the default gateway for the switch. Specifies a default static route via the specified IP address. With the no keyword removes the static default route. Specifies which interfaces run OSPF and in which area. Sends an echo request to the specified address. With no parameters specified, enters extended ping. Configures an OSPF routing process. With the no parameter, deletes the OSPF routing process. Specifies the router ID for OSPF; the router id is in an IPv4-address format. Displays HSRP information. Disables the specified interface. With the no parameter, enables the interface. Activates HSRP on the interface, in the specified group. The address is the address of the HSRP virtual router that is created. With the no parameter, deactivates HSRP. Sets VLAN assignment of an interface. With the no parameter, the VLAN goes back to the default (VLAN 1). Sets trunking mode of an interface. With the no parameter, the interface returns to the default mode (dynamic auto). Sets VLAN allowed list on an trunk interface. With the no parameter, the list is removed. Executes a trace to the target address. Windows Commands Used In This Lab Command ping address ping -t tracert address Description Causes an ICMP echo message to be sent to the destination, which should cause an ICMP echo reply message to be returned. Causes continuous ICMP echo messages to be sent to the destination, which should cause ICMP echo reply messages to be returned. Displays the path of routers that a test packet traverses on the way to a destination address. L5-4 Global Knowledge Training LLC

5 Procedure In this lab you will examine the hot standby router protocol (HSRP). First you will configure PxR2 similar to PxR1, so they are both possible default gateway candidates. You will then configure HSRP on both routers and examine its behavior. Note This lab requires that the previous lab was completed correctly. If you have any doubts, reset to this lab, as described in Lab 0: Introduction, and Connecting to and Using the Remote Lab Environment. Prepare pod devices Currently PxR1 has a trunk to PxSW and is the default gateway for all pod devices. For HSRP to work, both PxR1 and PxR2 must be configured such that they are possible default gateways for PxSW, PC1 and PC2. To accomplish this, you will first re-configure PxR2 s link to PxSW as a trunk and configure PxR2 to run OSPF with PxR1 and the core router (similar to PxR1 s configuration). 1. Connect to PxSW and enter configuration mode. On the switch s FastEthernet 0/2 interface remove the access VLAN 3x configuration and configure trunking; this is the interface connected to PxR2. Allow only the pod VLANs 1, 1x, and 2x on the trunk (remember x is your pod number). PxSW#conf t PxSW(config)#interface fastethernet 0/2 PxSW(config-if)#no switchport access vlan 3x PxSW(config-if)#switchport mode trunk PxSW(config-if)#switchport trunk allowed vlan 1,1x,2x PxSW(config-if)#end 2. Connect to PxR2 and enter configuration mode. Configure PxR2 s GigabitEthernet 0/0 as a trunk port. First remove the IP address on the interface. PxR2#configure terminal PxR2(config)#interface gi 0/0 PxR2(config-if)#no ip address Global Knowledge Training LLC L5-5

6 3. Create subinterfaces for each of the VLANs; use a subinterface number equal to the VLAN number, specify IEEE 802.1q encapsulation (tagging), and assign the appropriate IP address to the subinterface as detailed in the following table (x = your pod number). Subinterface VLAN number Address/ Mask PxR2 Gi0/0.1 1 (native VLAN) x PxR2 Gi0/0.1x 1x 10.1.x PxR2 Gi0/0.2x 2x 10.2.x PxR2(config-if)#interface gi 0/0.1 PxR2(config-subif)#encapsulation dot1q 1 native PxR2(config-subif)#ip address x PxR2(config-subif)#interface gi 0/0.1x PxR2(config-subif)#encapsulation dot1q 1x PxR2(config-subif)#ip address 10.1.x PxR2(config-subif)#interface gi 0/0.2x PxR2(config-subif)#encapsulation dot1q 2x PxR2(config-subif)#ip address 10.2.x PxR2(config-subif)#end 4. On PxR2, enable the GigabitEthernet 0/1 interface connection to the core. Configure this interface with address xx.2/24. Remove the default route via PxR1. PxR2(config)#interface Gi0/1 PxR2(config-if)#no shutdown PxR2(config-if)#ip address xx PxR2(config-if)#exit PxR2(config)#no ip route x.1 5. On PxR2 create an OSPF process, using OSPF process ID of 1 and manually configure the router ID to 1.1.x.2, where x is your pod number. PxR2(config)#router ospf 1 PxR2(config-router)#router-id 1.1.x.2 6. On PxR2 configure all of the GigabitEthernet 0/0 subinterfaces and the GigabitEthernet 0/1 interface in OSPF area 0. PxR2(config-router)#network x area 0 PxR2(config-router)#network 10.1.x area 0 PxR2(config-router)#network 10.2.x area 0 PxR2(config-router)#network xx area 0 L5-6 Global Knowledge Training LLC

7 Configure HSRP Lab 5: Configuring HSRP In this section you will configure HSRP on PxR1 and PxR2, for all current pod VLANs: 1, 1x, and 2x. 7. Connect to PxR1 and enter configuration mode. On each of the PxR1 and PxR2 GigabitEthernet 0/0 subinterfaces, activate HSRP. Use group number 2 and the addresses shown in the following table (where x = your pod number). These addresses are the addresses of the HSRP virtual router for each VLAN. Either PxR1 or PxR2 will be the active router implementing the HSRP virtual router; the other router will be a standby router. Subinterface Gi0/0.1 Gi0/0.1x Gi0/0.2x HSRP Address x x x.100 PxRy(config)#interface gi 0/0.1 PxRy(config-subif)#standby 2 ip x.100 PxRy(config-subif)#exit PxRy(config)#interface gi 0/0.1x PxRy(config-subif)#standby 2 ip 10.1.x.100 PxRy(config-subif)#exit PxRy(config)#interface gi 0/0.2x PxRy(config-subif)#standby 2 ip 10.2.x.100 PxRy(config-subif)#end Important Be sure to configure HSRP on both routers! Verify HSRP 8. Examine the HSRP information on both routers. PxR1#show standby GigabitEthernet0/0.1 - Group 2 State is Active 2 state changes, last state change 00:02:53 Virtual IP address is x.100 Next hello sent in secs Active router is local Standby router is x.2, priority 100 (expires in sec) Group name is "hsrp-gi0/0.1-2" (default) GigabitEthernet0/0.1x - Group 2 Global Knowledge Training LLC L5-7

8 State is Active 2 state changes, last state change 00:02:31 Virtual IP address is 10.1.x.100 Next hello sent in secs Active router is local Standby router is 10.1.x.2, priority 100 (expires in sec) Group name is "hsrp-gi0/0.1x-2" (default) GigabitEthernet0/0.2x - Group 2 State is Active 2 state changes, last state change 00:02:17 Virtual IP address is 10.2.x.100 Next hello sent in secs Active router is local Standby router is 10.2.x.2, priority 100 (expires in sec) Group name is "hsrp-gi0/0.2x-2" (default) PxR2#show standby GigabitEthernet0/0.1 - Group 2 State is Standby 1 state change, last state change 00:01:49 Virtual IP address is x.100 Next hello sent in secs Active router is x.1, priority 100 (expires in sec) Standby router is local Group name is "hsrp-gi0/0.1-2" (default) GigabitEthernet0/0.1x - Group 2 State is Standby 1 state change, last state change 00:01:39 Virtual IP address is 10.1.x.100 Next hello sent in secs Active router is 10.1.x.1, priority 100 (expires in sec) Standby router is local Group name is "hsrp-gi0/0.1x-2" (default) GigabitEthernet0/0.2x - Group 2 State is Standby 1 state change, last state change 00:01:30 Virtual IP address is 10.2.x.100 L5-8 Global Knowledge Training LLC

9 Next hello sent in secs Active router is 10.2.x.1, priority 100 (expires in sec) Standby router is local Group name is "hsrp-gi0/0.2x-2" (default) PxR2# 9. Which router is the HSRP active router for your VLANs? Lab 5: Configuring HSRP In the sample output in the previous step, PxR1 is the active router for all VLANs, and PxR2 is the standby router. Your results may be opposite. The active router is selected as the router with highest priority; the sample output indicates that both routers are using the default priority of 100. In the case of a tie, the tie breaker is the IP address; the higher one wins. However, if one router claims the active role before the other router is configured, by default the second router configured will not preempt the active router (as shown in the sample display), even if it has a higher priority. In this case, PxR1 was configured first and it claimed the active role. 10. Connect to your PC1, PC2, and PxSW. Change the default gateway on PC1 and PC2 and PxSW to the appropriate HSRP address, as shown in the following chart (x = your pod number). Device/ Interface PC1 PC2 PxSW Default Gateway 10.1.x x x.100 PxSW#conf t PxSW(config)#ip default-gateway x.100 PxSW(config)#end Important Remember that on the PCs you must close both the Internet Protocol Version 4 (TCP/IPv4) Properties window and the Ethernet Properties window for the address change to take effect. Important The PC s desktop includes an indication of the PC s IP address and default gateway. This information is refreshed every few minutes, so will not change immediately. To confirm that the address has been configured correctly, use the ipconfig /all PC command. Global Knowledge Training LLC L5-9

Note The following examples of setting the PC's addresses are for Pod 6; use the appropriate addresses for your pod. 11. From PC1, PC2 and PxSW, ping the TFTP server (172.16.1.1); all pings should be successful.

10 Note The following examples of setting the PC's addresses are for Pod 6; use the appropriate addresses for your pod. 11. From PC1, PC2 and PxSW, ping the TFTP server ( ); all pings should be successful. PxSW#ping Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to , timeout is 2 seconds: L5-10 Global Knowledge Training LLC

Notice the address of the router that the packets go through. PxSW#traceroute 172.16.1.1 Type escape sequence to abort.

11 !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/8 ms PxSW# Here is PC1 pinging the TFTP server: Lab 5: Configuring HSRP Here is PC2 pinging the TFTP server: 12. From PC1, PC2 and PxSW, trace to the TFTP server ( ). Notice the address of the router that the packets go through. PxSW#traceroute Type escape sequence to abort. Tracing the route to x msec 0 msec 0 msec xx.3 8 msec 0 msec 0 msec msec 0 msec 0 msec PxSW# Global Knowledge Training LLC L5-11

On PC 1, use the ping -t command to do a continuous ping of the TFTP server. 14.

12 Here is PC1 tracing the TFTP server (on the example Pod 6): Here is PC1 tracing the TFTP server (on the example Pod 6): In each case, the packets go via the currently active router s address (which is PxR1 in the examples). 13. On PC 1, use the ping -t command to do a continuous ping of the TFTP server. 14. Leave the pings running, and on the router that is currently the active HSRP router, shut down the GigabitEthernet 0/0 interface. (In the example, PxR1 is the currently active router.) PxR1#conf t PxR1(config)#interface gi 0/0 PxR1(config-if)#shutdown L5-12 Global Knowledge Training LLC

15. After the router s GigabitEthernet 0/0 goes down, look at PC1 s output. What happens? You should a brief interruption in the stream of pings, after which they again become successful. 16.

13 15. After the router s GigabitEthernet 0/0 goes down, look at PC1 s output. What happens? You should a brief interruption in the stream of pings, after which they again become successful. 16. From PxSW trace to the TFTP server ( ). Notice the address of the router that the packets go through. PxSW#trace Type escape sequence to abort. Tracing the route to x.2 0 msec 0 msec 0 msec xx.3 8 msec 0 msec 0 msec msec 8 msec 0 msec PxSW# The packets now go via the other router s address (PxR2 in this example). 17. Examine the HSRP information on both routers. PxR1#show standby GigabitEthernet0/0.1 - Group 2 State is Init (interface down) 3 state changes, last state change 00:26:30 Virtual IP address is x.100 Active virtual MAC address is unknown Active router is unknown Standby router is unknown Group name is "hsrp-gi0/0.1-2" (default) GigabitEthernet0/0.1x - Group 2 State is Init (interface down) Global Knowledge Training LLC L5-13

14 3 state changes, last state change 00:26:30 Virtual IP address is 10.1.x.100 Active virtual MAC address is unknown Active router is unknown Standby router is unknown Group name is "hsrp-gi0/0.1x-2" (default) GigabitEthernet0/0.2x - Group 2 State is Init (interface down) 3 state changes, last state change 00:26:30 Virtual IP address is 10.2.x.100 Active virtual MAC address is unknown Active router is unknown Standby router is unknown Group name is "hsrp-gi0/0.2x-2" (default) PxR1# PxR2#show standby GigabitEthernet0/0.1 - Group 2 State is Active 2 state changes, last state change 00:27:11 Virtual IP address is x.100 Next hello sent in secs Active router is local Standby router is unknown Group name is "hsrp-gi0/0.1-2" (default) GigabitEthernet0/0.1x - Group 2 State is Active 2 state changes, last state change 00:27:11 Virtual IP address is 10.1.x.100 Next hello sent in secs Active router is local Standby router is unknown Group name is "hsrp-gi0/0.1x-2" (default) GigabitEthernet0/0.2x - Group 2 State is Active 2 state changes, last state change 00:27:11 Virtual IP address is 10.2.x.100 L5-14 Global Knowledge Training LLC

Next hello sent in 2.096 secs Active router is local Standby router is unknown Group name is "hsrp-gi0/0.2x-2" (default) PxR2# 18. Which router is the HSRP active router for your VLANs?

15 Next hello sent in secs Active router is local Standby router is unknown Group name is "hsrp-gi0/0.2x-2" (default) PxR2# 18. Which router is the HSRP active router for your VLANs? Notice that now PxR2 is the active router for all VLANs in the example output. 19. Enable the GigabitEthernet 0/0 interface that you shutdown earlier. PxR2#conf t PxR2(config)#interface gi 0/0 PxR2(config-if)#no shutdown 20. After the router s GigabitEthernet 0/0 comes up, look at PC1 s output. Do you see any missed pings? You should not see any interruption of the stream of pings. 21. From PxSW trace to the TFTP server ( ). Notice the address of the router that the packets go through. PxSW#trace Type escape sequence to abort. Tracing the route to x.2 0 msec 8 msec 0 msec xx.3 9 msec 0 msec 0 msec msec 0 msec 0 msec PxSW# The packets still go via the same address, PxR2 in this example. 22. Examine the HSRP information on both routers. PxR1#show standby GigabitEthernet0/0.1 - Group 2 State is Standby 4 state changes, last state change 00:02:44 Virtual IP address is x.100 Global Knowledge Training LLC L5-15

16 Next hello sent in secs Active router is x.2, priority 100 (expires in sec) Standby router is local Group name is "hsrp-gi0/0.1-2" (default) GigabitEthernet0/0.1x - Group 2 State is Standby 4 state changes, last state change 00:02:45 Virtual IP address is 10.1.x.100 Next hello sent in secs Active router is 10.1.x.2, priority 100 (expires in sec) Standby router is local Group name is "hsrp-gi0/0.1x-2" (default) GigabitEthernet0/0.2x - Group 2 State is Standby 4 state changes, last state change 00:02:44 Virtual IP address is 10.2.x.100 Next hello sent in secs Active router is 10.2.x.2, priority 100 (expires in sec) Standby router is local Group name is "hsrp-gi0/0.2x-2" (default) PxR1# PxR2#show standby GigabitEthernet0/0.1 - Group 2 State is Active 2 state changes, last state change 00:33:12 Virtual IP address is x.100 Next hello sent in secs Active router is local Standby router is x.1, priority 100 (expires in sec) Group name is "hsrp-gi0/0.1-2" (default) GigabitEthernet0/0.1x - Group 2 State is Active 2 state changes, last state change 00:33:12 Virtual IP address is 10.1.x.100 Next hello sent in secs L5-16 Global Knowledge Training LLC

17 Active router is local Standby router is 10.1.x.1, priority 100 (expires in sec) Group name is "hsrp-gi0/0.1x-2" (default) GigabitEthernet0/0.2x - Group 2 State is Active 2 state changes, last state change 00:33:12 Virtual IP address is 10.2.x.100 Next hello sent in secs Active router is local Standby router is 10.2.x.1, priority 100 (expires in sec) Group name is "hsrp-gi0/0.2x-2" (default) PxR2# Lab 5: Configuring HSRP 23. Which router is the HSRP active router for your VLANs? Notice that PxR2 is still the active router. PxR1 did not preempt PxR Stop the continuous pings on PC1, using <Ctrl> C. Reconfigure pod devices Important The following steps are necessary to prepare the pod devices for subsequent labs. As an alternative to doing these steps, you can reset to the next lab you are going to do. 25. On the switch s FastEthernet 0/2 interface, remove the trunk mode configuration and remove the allowed VLANs on the trunk. Configure the interface in access VLAN 3x. PxSW(config)#interface fastethernet 0/2 PxSW(config-if)#no switchport mode trunk PxSW(config-if)#no switchport trunk allowed vlan PxSW(config-if)#switchport access vlan 3x 26. Delete PxR2 s GigabitEthernet 0/0 subinterfaces and configure the GigabitEthernet 0/0 interface with an address 10.3.x.2/24. PxR2(config)#no interface Gi0/0.1 PxR2(config)#no interface Gi0/0.1x PxR2(config)#no interface Gi0/0.2x PxR2(config)#interface Gi0/0 PxR2(config-if)#ip address 10.3.x PxR2(config-if)#exit Global Knowledge Training LLC L5-17

18 27. On PxR2, shutdown the GigabitEthernet 0/1 interface connection to the core and remove its IP address. Remove the OSPF 1 process and configure PxR2 with a default route to PxR1. PxR2(config)#interface Gi0/1 PxR2(config-if)#shutdown PxR2(config-if)#no ip address xx PxR2(config-if)#exit PxR2(config)#no router ospf 1 PxR2(config)#ip route x On PxR1 remove the HSRP configuration from the GigabitEthernet 0/0 subinterfaces. PxR1(config)#interface gi 0/0.1 PxR1(config-subif)#no standby 2 ip x.100 PxR1(config-subif)#interface gi 0/0.1x PxR1(config-subif)#no standby 2 ip 10.1.x.100 PxR1(config-subif)#interface gi 0/0.2x PxR1(config-subif)#no standby 2 ip 10.2.x.100 PxR1(config-subif)#end 29. Change the default gateway on PC1 and PC2 and PxSW back to the appropriate address, as shown in the following chart (x = your pod number). Device/ Interface PC1 PC2 PxSW Default Gateway 10.1.x x x.1 PxSW#conf t PxSW(config)#ip default-gateway x.1 PxSW(config)#end L5-18 Global Knowledge Training LLC

19 Note The following examples of setting the PC s addresses are for Pod 6; use the appropriate addresses for your pod. Global Knowledge Training LLC L5-19

20 Save the configurations 30. Save all of your pod device configurations to startup-config. PxSW#copy running-config startup-config PxR1#copy running-config startup-config PxR2#copy running-config startup-config Lab Complete L5-20 Global Knowledge Training LLC

21 Completed Configuration The resulting configurations for this lab are the same as the previous lab. Global Knowledge Training LLC L5-21

22 L5-22 Global Knowledge Training LLC

Configuring EtherChannel

L4 Configuring EtherChannel Global Knowledge Training LLC L4-1 Objectives In this lab you will first verify that one of the parallel connections to the core switch is blocked by STP. You will then configure