https://tim.army/doku/ 2026-05-10T17:32:42+00:00 https://tim.army/doku/ https://tim.army/doku/lib/exe/fetch.php?media=wiki:dokuwiki.svg text/html 2025-02-17T23:36:51+00:00 Anonymous (anonymous@undisclosed.example.com) https://tim.army/doku/doku.php?id=cisco:labs:ios_xr:lab_misc_1&rev=1739835411&do=diff IOS-XR BGP, VRF hostname Router1 vrf portland address-family ipv4 unicast import route-target 1:1 ! export route-target 1:1 ! ! ! interface MgmtEth0/0/CPU0/0 shutdown ! interface GigabitEthernet0/0/0/0 vrf portland ipv4 address 10.0.0.1 255.255.255.252 ! interface GigabitEthernet0/0/0/1 shutdown ! interface GigabitEthernet0/0/0/2 shutdown ! router bgp 65000 bgp router-id 1.1.1.1 address-family ipv4 unicast ! address-family vpnv4 unicast ! vrf portland rd 1:1 bgp … text/html 2025-02-17T23:36:51+00:00 Anonymous (anonymous@undisclosed.example.com) https://tim.army/doku/doku.php?id=cisco:labs:ios_xr:lab1&rev=1739835411&do=diff IOS-XR Lab 1: Initial Configuration * Set initial username. * Just use admin/admin as the username/password combo * Configure Hostname. * Answer RP/0/0/CPU0:ios#conf t RP/0/0/CPU0:ios(config)#hostname R1 ++ * Save changes for the configuration to take effect.(commit changes) text/html 2025-02-17T23:36:51+00:00 Anonymous (anonymous@undisclosed.example.com) https://tim.army/doku/doku.php?id=cisco:labs:ios_xr:lab2&rev=1739835411&do=diff IOS-XR Lab 2: HSRP Configuration * Unlike IOS, IOS-XR has the HSRP configuration done under a router process. Configure HSRP group 1 using the East-West link to R2. * Answer option 1 RP/0/0/CPU0:R1(config)#router hsrp RP/0/0/CPU0:R1(config-hsrp)#interface g 0/0/0/0 RP/0/0/CPU0:R1(config-hsrp-if)#address-family ipv4 RP/0/0/CPU0:R1(config-hsrp-ipv4)#hsrp 1 RP/0/0/CPU0:R1(config-hsrp-gp)#address 10.0.0.1 RP/0/0/CPU0:R1(config-hsrp-gp)#commit text/html 2025-02-17T23:36:51+00:00 Anonymous (anonymous@undisclosed.example.com) https://tim.army/doku/doku.php?id=cisco:labs:ios_xr:lab3&rev=1739835411&do=diff IOS-XR Lab 3: iBGP Configuration This lab will cover iBGP configuration. If you are unfamiliar with BGP, please check out this link for a brief description. * Configure iBGP between R1 and R2 using the following parameters: * R1 Loopback 0=1.1.1.1/32 text/html 2025-02-17T23:36:51+00:00 Anonymous (anonymous@undisclosed.example.com) https://tim.army/doku/doku.php?id=cisco:labs:ios_xr:lab4&rev=1739835411&do=diff IOS-XR Lab 4: Advertising iBGP * Advertise the Loopback and G 0/0/0/0 interface on both routers. Be patient, BGP neighborship will form. Sometimes it could take a few mins for that neighborship to form. * Answer RP/0/0/CPU0:R1(config)#router bgp 65000 RP/0/0/CPU0:R1(config-bgp)#address-family ipv4 unicast RP/0/0/CPU0:R1(config-bgp-af)#network 10.0.0.0/24 RP/0/0/CPU0:R1(config-bgp-af)#network 1.1.1.1/32 RP/0/0/CPU0:R1(config-bgp-af)#commit text/html 2025-02-17T23:36:51+00:00 Anonymous (anonymous@undisclosed.example.com) https://tim.army/doku/doku.php?id=cisco:labs:ios_xr:lab5&rev=1739835411&do=diff IOS-XR Lab 5: iBGP with Three Routers part 1 This lab will configure a third router to form iBGP with three routers. This lab will fail, but will be fixed in Lab 6. * Configure a third BGP router, connected to R2's G0/0/0/1 interface, with the following parameters: text/html 2025-02-17T23:36:51+00:00 Anonymous (anonymous@undisclosed.example.com) https://tim.army/doku/doku.php?id=cisco:labs:ios_xr:lab6&rev=1739835411&do=diff IOS-XR Lab 6: iBGP with Three Routers part 2 This lab will configure all three routers to form iBGP relationships with each other. * Add a neighbor statement to R3 from R1 and vice-versa. * Answer R1 router bgp 65000 neighbor 10.0.1.3 remote-as 65000 address-family ipv4 unicast text/html 2025-02-17T23:36:51+00:00 Anonymous (anonymous@undisclosed.example.com) https://tim.army/doku/doku.php?id=cisco:labs:ios_xr:lab7&rev=1739835411&do=diff IOS-XR Lab 7: iBGP with Three Routers part 3 This lab will configure all three routers to form iBGP relationships with each other. * Connect R1: G0/0/0/2 to R3: G0/0/0/2 * On R1: * IP: 10.0.2.2/24 * BGP ASN 65000 * On R3: 10.0.2.3/24 * text/html 2025-02-17T23:36:52+00:00 Anonymous (anonymous@undisclosed.example.com) https://tim.army/doku/doku.php?id=cisco:labs:ios_xr:lab8&rev=1739835412&do=diff IOS-XR Lab 8: iBGP with Three Routers part 4 - using loopback peering * Loopback interfaces are simply logical interfaces that never go down unless they are admin shut or the hardware has a fault. For this reason, loopbacks are the primary choice to peer neighbors with. text/html 2025-02-17T23:36:52+00:00 Anonymous (anonymous@undisclosed.example.com) https://tim.army/doku/doku.php?id=cisco:labs:ios_xr:lab9&rev=1739835412&do=diff IOS-XR Lab 9: iBGP with Route Reflectors part 1 Initial Configs hostname nysyr-rc1 ! interface Loopback0 ipv4 address 192.168.1.1 255.255.255.255 ! interface GigabitEthernet0/0/0/0 description connection to ny-rr; Gig 0/0/0/0 ipv4 address 10.0.1.1 255.255.255.0 ! router bgp 65000 bgp router-id 192.168.1.1 address-family ipv4 unicast network 10.0.1.0/24 network 192.168.1.1/32 ! neighbor 192.168.1.254 remote-as 65000 update-source Loopback0 address-family ipv4 unicast