DEVICE: ROUTER - BRANCH BRANCH#SHOW RUN Building configuration... Current configuration : 4075 bytes ! ! Last configuration change at 09:54:32 UTC Mon May 11 2026 ! version 17.6 service timestamps debug datetime msec service timestamps log datetime msec platform qfp utilization monitor load 80 platform punt-keepalive disable-kernel-core ! hostname BRANCH ! boot-start-marker boot-end-marker ! ! ! no aaa new-model ! ! ! ! ! ! ! no ip domain lookup ! ! ! login on-success log ! ! ! ! ! ! ! subscriber templating multilink bundle-name authenticated ! ! ! crypto pki trustpoint TP-self-signed-1331583909 enrollment selfsigned subject-name cn=IOS-Self-Signed-Certificate-1331583909 revocation-check none rsakeypair TP-self-signed-1331583909 ! ! crypto pki certificate chain TP-self-signed-1331583909 certificate self-signed 01 30820330 30820218 A0030201 02020101 300D0609 2A864886 F70D0101 05050030 31312F30 2D060355 04031326 494F532D 53656C66 2D536967 6E65642D 43657274 69666963 6174652D 31333331 35383339 3039301E 170D3236 30353131 30373231 33325A17 0D333630 35313030 37323133 325A3031 312F302D 06035504 03132649 4F532D53 656C662D 5369676E 65642D43 65727469 66696361 74652D31 33333135 38333930 39308201 22300D06 092A8648 86F70D01 01010500 0382010F 00308201 0A028201 0100BB0E 1B1E7684 488B9E04 3B99E0DE 407014C3 81600C3A 237C0DE1 234CA0C6 FD888417 15F4F37D 5D0FEE77 D379BF6F 8C5824B2 57D87C1B 4AB77F8E A4B84B75 F692E4EE 9B25874F 200362BA 5B5F2365 55A22E5B 4EA22666 A5F2E8CB A057C29D B66FB534 DC461424 445BB105 90B4E7F6 B368BD23 0CEFBF0E 5D351DB8 50CEDBFB 052FE41B 13C594DD BFA12BD3 0FFE2ED4 8699A104 288F4405 DD1184E2 A6FDFEF8 854792CA A19449DB EEFB4353 0058A954 4E2FD3A3 7CEE909D 14424938 E7F5E3FD 95A25BDF 2D3006A1 B664C286 97284A01 45716376 6FBF255B 24C0066C EC826E8C CD3E9103 7A764444 CE0F4BAF 3D3A5AA4 6F4101C9 9AB5C563 9ED302E6 F3846847 EE5F0203 010001A3 53305130 0F060355 1D130101 FF040530 030101FF 301F0603 551D2304 18301680 145F2334 1811842A 0C6AFD97 EC05029D 63717188 D9301D06 03551D0E 04160414 5F233418 11842A0C 6AFD97EC 05029D63 717188D9 300D0609 2A864886 F70D0101 05050003 82010100 760874FE AC23C110 2DF5EA32 F0DCEE14 8B88F841 1C67FA11 363F9F6A D17002D0 447D94E5 2B10E2C7 241C591A DCCE3E5C 33B3C51F 827A3DB9 81899F06 813EC973 60C0EBA1 EBBF61CD 5D8AC85D D34E0BB4 736574A1 E6027FFA A193B52F E0650C65 3196F3DF 9609ABC3 0FA90259 C142623C BDE42F9C 91EED124 3DFB16B0 EC8AAD9C 77C4454D E5AD3BFD 31355368 052BEBB0 C2D62C13 CE09BB90 6FD68027 B8BA3A8D F434E605 877DCE95 BA504FC7 1D217C66 586DE1B8 611FF6F9 238CFCD2 BCD07CB7 C8C7EBE6 F6D45E66 C7591192 7F2354E9 DBEE52C3 0FF2FB75 FAEDBB57 3FBB9392 D80C069E 4E2E9D99 33108E8E 37DBEF86 CE929C88 D4881062 189B6F41 000E2184 quit ! ! license udi pid C8200L-1N-4T sn FGL2725L1PA memory free low-watermark processor 67482 ! diagnostic bootup level minimal ! spanning-tree extend system-id ! ! redundancy mode none ! ! ! ! ! ! ! ! interface GigabitEthernet0/0/0 description BRANCH to CORE ip address 172.16.20.226 255.255.255.252 ip ospf dead-interval 120 ip ospf hello-interval 30 negotiation auto ! interface GigabitEthernet0/0/1 description BRANCH to SWITCH2 ip address 8.8.8.1 255.255.255.0 negotiation auto ! interface GigabitEthernet0/0/2 no ip address negotiation auto ! interface GigabitEthernet0/0/3 no ip address negotiation auto ! interface Serial0/1/0 description BRANCH to PROVIDER DTE to DCE Link 1 ip address 2.2.2.1 255.255.255.248 ip ospf dead-interval 120 ip ospf hello-interval 30 ! interface Serial0/1/1 description BRANCH to PROVIDER Link 2 ip address 100.100.100.1 255.255.255.252 ip ospf dead-interval 120 ip ospf hello-interval 30 ! router ospf 10 router-id 2.2.2.2 passive-interface GigabitEthernet0/0/1 network 8.8.8.0 0.0.0.255 area 1 network 172.16.20.224 0.0.0.3 area 0 default-information originate ! ip http server ip http authentication local ip http secure-server ip forward-protocol nd ip route 0.0.0.0 0.0.0.0 Serial0/1/0 ! ! ! ! ! ! control-plane ! ! line con 0 stopbits 1 line aux 0 line vty 0 4 login transport input ssh line vty 5 14 login transport input ssh ! ! ! ! ! ! ! end BRANCH#SHOW IP INT BRIEF Interface IP-Address OK? Method Status Protocol GigabitEthernet0/0/0 172.16.20.226 YES manual up up GigabitEthernet0/0/1 8.8.8.1 YES manual up up GigabitEthernet0/0/2 unassigned YES unset down down GigabitEthernet0/0/3 unassigned YES unset down down Serial0/1/0 2.2.2.1 YES manual up up Serial0/1/1 100.100.100.1 YES manual up up BRANCH#SHOW IP PROTOCOLS *** IP Routing is NSF aware *** Routing Protocol is "application" Sending updates every 0 seconds Invalid after 0 seconds, hold down 0, flushed after 0 Outgoing update filter list for all interfaces is not set Incoming update filter list for all interfaces is not set Maximum path: 32 Routing for Networks: Routing Information Sources: Gateway Distance Last Update Distance: (default is 4) Routing Protocol is "ospf 10" Outgoing update filter list for all interfaces is not set Incoming update filter list for all interfaces is not set Router ID 2.2.2.2 It is an area border and autonomous system boundary router Redistributing External Routes from, Number of areas in this router is 2. 2 normal 0 stub 0 nssa Maximum path: 4 Routing for Networks: 8.8.8.0 0.0.0.255 area 1 172.16.20.224 0.0.0.3 area 0 Passive Interface(s): GigabitEthernet0/0/1 Routing Information Sources: Gateway Distance Last Update 1.1.1.1 110 00:45:53 Distance: (default is 110) BRANCH#SHOW IP ROUTE Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2, m - OMP n - NAT, Ni - NAT inside, No - NAT outside, Nd - NAT DIA i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2 ia - IS-IS inter area, * - candidate default, U - per-user static route H - NHRP, G - NHRP registered, g - NHRP registration summary o - ODR, P - periodic downloaded static route, l - LISP a - application route + - replicated route, % - next hop override, p - overrides from PfR & - replicated local route overrides by connected Gateway of last resort is 0.0.0.0 to network 0.0.0.0 S* 0.0.0.0/0 is directly connected, Serial0/1/0 2.0.0.0/8 is variably subnetted, 2 subnets, 2 masks C 2.2.2.0/29 is directly connected, Serial0/1/0 L 2.2.2.1/32 is directly connected, Serial0/1/0 8.0.0.0/8 is variably subnetted, 2 subnets, 2 masks C 8.8.8.0/24 is directly connected, GigabitEthernet0/0/1 L 8.8.8.1/32 is directly connected, GigabitEthernet0/0/1 172.16.0.0/16 is variably subnetted, 5 subnets, 4 masks O 172.16.20.0/25 [110/2] via 172.16.20.225, 00:46:12, GigabitEthernet0/0/0 O 172.16.20.128/26 [110/2] via 172.16.20.225, 00:46:12, GigabitEthernet0/0/0 O 172.16.20.193/32 [110/2] via 172.16.20.225, 00:46:12, GigabitEthernet0/0/0 C 172.16.20.224/30 is directly connected, GigabitEthernet0/0/0 L 172.16.20.226/32 is directly connected, GigabitEthernet0/0/0 BRANCH#SHOW IP NAT TRANSLATIONS BRANCH#SHOW IP BGP SUMMARY % BGP not active BRANCH#SHOW IP BGP % BGP not active