NOTES ABOUT OSPF NORMAL-AREA and OSPF in VRF-LITE ROUTING Massimiliano Sbaraglia
1) Nega la default da OSPF 1 2) Applica un PBR che permette alla rete sorgente di applicare il next-hop via 0 INTERNET R1 2.2.2 0.0.0.0/0 via 2.2.2.2 2.2.2.2 vlan 108 OSPF 1 area 8 8 static-route in vrf 08.2.208.3 hsrp 08.40 1041.8.0/24 1088.0/24 1041.0.0/24 1041.0.0/24 1) Conosce la via i due nh in vrf PIPPO in modo bilanciato 2) Annuncia la default-route la quale 1) Viene negata dal processo OSPF 1 2) Viene accettata dal processo OSPF 2 vrf PIPPO 3) Ha la sua 0/0 default via statica verso il 1.2 EXT 1 24 1) Conosce la 1726.30.0 via 1 EXT 1.2 1000.0/24 0
Tabella di Routing S 0.0.0.0/0 via 2.2.2.2 Applica il PBR su sorgente 1726.30.0 via 0 R1 INTERNET 2.2.2 2.2.2.2 8 1041.8.0/24 OSPF 1 area 8 static-route in vrf S 0.0.0.0/0 via 1041.8 O IA via 1041.0.40 IF-C O IA 1726.30.0 /24 via 1041.0.50 IF-C Tabella di routing in VRF PIPPO O E2 0.0.0.0/0 via 1041.024 IF-D S via 10888 redistributing in OSPF 2 08 hsrp.208 08.40 1041.0.0/24 1041.0.0/24 S 0.0.0.0/0 via 1041.8 O IA via 1041.0.40 IF-C O IA 1726.30.0 /24 via 1041.0.50 IF-C Tabella di routing in VRF O E2 0.0.0.0/0 via 1041.024 IF-D S via 10888 redistributing in OSPF 2 S 0.0.0.0/0 via 1.2 O IA via 1041.0.40 O IA 1726.30.0 /24 via 1041.0.50 24
trace 10000 1) Nega la default da OSPF 1 2) Applica un PBR che permette alla rete sorgente di applicare il next-hop via 1 1726.30 2 1088.2 3 1041.024 4 * * * * 5 10000 1) vrf PIPPOg per il processo OSPF 2 e relative IF 3) Permette la default nel processo OSPF 2 in vrf smartpippo 0 R1 INTERNET 2.2.2 0.0.0.0/0 via 2.2.2.2 2.2.2.2 vlan 108 OSPF 1 area 8 8 Static Route in VRF 08.2.208.3 hsrp 08.40 1041.8.0/24 1088.0/24 1041.0.0/24 1041.0.0/24 1) Conosce la via i due nh in vrf PIPPO in modo bilanciato 2) Annuncia la default-route la quale 1) Viene negata dal processo OSPF 1 2) Viene accettata dal processo OSPF 2 vrf PIPPO 3) Ha la sua 0/0 default via statica verso il 1.2 EXT 1 24 trace 1726.300 1) Conosce la 1726.30.0 via 1 1.2 EXT 1000.0/24 0 1 1000 2 1 3 1041.0.50 4 * * * * 5 1726.300
ip vrf PIPPO rd 10:10 interface Loopback1 description PIPPO ip address 19268.255 255.255.255.255 interface po1841 description to-backbone-vrf-lite-pippo ip address 1041.0.40 255.255.255.0 ip ospf 2 area 0.0.0.0 interface GigabitEthernet0/0/18 description to-r1 encapsulation dot1q 18 ip address 1042.8.2 255.255.255.224 standby version 2 standby 18 ip 1042.8 standby 18 priority 110 standby 18 preempt interface po841 description transito-ospf-backbone ip address 1041.008 255.255.255.0 ip virtual-reassembly router ospf 2 vrf PIPPO router-id 19268.255 redistribute static subnets passive-interface default no passive-interface po1841 ip route vrf smart-working 1726.30.0 255.255.255.0 10888 8.2.3 08 R1 VRF PIPPO.208.40.50 1088.0/27 1041.0.0/24 1041.0.0/24 ip vrf PIPPO rd 10:10 interface Loopback1 description PIPPO ip address 19268.255.2 255.255.255.255 interface po1841 description to-backbone-vrf-lite-pippo ip address 1041.0.50 255.255.255.0 ip ospf 2 area 0.0.0.0 interface GigabitEthernet0/0/18 description to-r1 encapsulation dot1q 18 ip address 1042.8.3 255.255.255.224 standby version 2 standby 18 ip 1042.8 standby 18 priority 110 standby 18 preempt interface po841 description transito-ospf-backbone ip address 1041.0.208 255.255.255.0 ip virtual-reassembly router ospf 2 vrf PIPPO router-id 19268.255.2 redistribute static subnets passive-interface default no passive-interface po1841 ip route vrf smart-working 1726.30.0 255.255.255.0 10888