R1#show version Cisco IOS XE Software, Version 17.18.02 Cisco IOS Software [IOSXE], Virtual XE Software (X86_64_LINUX_IOSD-UNIVERSALK9-M), Version 17.18.2, RELEASE SOFTWARE (fc3) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2025 by Cisco Systems, Inc. Compiled Fri 19-Dec-25 03:49 by mcpre Cisco IOS-XE software, Copyright (c) 2005-2025 by cisco Systems, Inc. All rights reserved. Certain components of Cisco IOS-XE software are licensed under the GNU General Public License ("GPL") Version 2.0. The software code licensed under GPL Version 2.0 is free software that comes with ABSOLUTELY NO WARRANTY. You can redistribute and/or modify such GPL code under the terms of GPL Version 2.0. For more details, see the documentation or "License Notice" file accompanying the IOS-XE software, or the applicable URL provided on the flyer accompanying the IOS-XE software. ROM: IOS-XE ROMMON R1 uptime is 25 minutes Uptime for this control processor is 29 minutes System returned to ROM by reload System image file is "bootflash:packages.conf" Last reload reason: factory-reset This product contains cryptographic features and is subject to United States and local country laws governing import, export, transfer and use. Delivery of Cisco cryptographic products does not imply third-party authority to import, export, distribute or use encryption. Importers, exporters, distributors and users are responsible for compliance with U.S. and local country laws. By using this product you agree to comply with applicable laws and regulations. If you are unable to comply with U.S. and local laws, return this product immediately. A summary of U.S. laws governing Cisco cryptographic products may be found at: http://www.cisco.com/wwl/export/crypto/tool/stqrg.html If you require further assistance please contact us by sending email to export@cisco.com. License Level: License Type: Perpetual Next reload license Level: Addon License Level: Addon License Type: Subscription Next reload addon license Level: The current throughput level is 20000 kbps Smart Licensing Status: Smart Licensing Using Policy cisco C8000V (VXE) processor (revision VXE) with 1651587K/3075K bytes of memory. Processor board ID 95DJKIYLQ83 Router operating mode: Autonomous 4 Gigabit Ethernet interfaces 32768K bytes of non-volatile configuration memory. 3962124K bytes of physical memory. 5234688K bytes of virtual hard disk at bootflash:. Configuration register is 0x2102 R1#show interfaces description Interface Status Protocol Description Gi1 up up to R2 Gi2 up up to R3 Gi3 admin down down Gi4 up up management Lo0 up up R1#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 not set 1.0.0.0/32 is subnetted, 1 subnets C 1.1.1.1 is directly connected, Loopback0 2.0.0.0/32 is subnetted, 1 subnets O 2.2.2.2 [110/11] via 10.0.12.2, 00:24:07, GigabitEthernet1 3.0.0.0/32 is subnetted, 1 subnets O 3.3.3.3 [110/31] via 10.0.13.3, 00:03:31, GigabitEthernet2 4.0.0.0/32 is subnetted, 1 subnets O 4.4.4.4 [110/21] via 10.0.12.2, 00:24:07, GigabitEthernet1 10.0.0.0/8 is variably subnetted, 6 subnets, 2 masks C 10.0.12.0/24 is directly connected, GigabitEthernet1 L 10.0.12.1/32 is directly connected, GigabitEthernet1 C 10.0.13.0/24 is directly connected, GigabitEthernet2 L 10.0.13.1/32 is directly connected, GigabitEthernet2 O 10.0.24.0/24 [110/20] via 10.0.12.2, 00:24:07, GigabitEthernet1 O 10.0.34.0/24 [110/60] via 10.0.13.3, 00:03:31, GigabitEthernet2 R1#show ip route ospf 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 not set 2.0.0.0/32 is subnetted, 1 subnets O 2.2.2.2 [110/11] via 10.0.12.2, 00:24:07, GigabitEthernet1 3.0.0.0/32 is subnetted, 1 subnets O 3.3.3.3 [110/31] via 10.0.13.3, 00:03:31, GigabitEthernet2 4.0.0.0/32 is subnetted, 1 subnets O 4.4.4.4 [110/21] via 10.0.12.2, 00:24:07, GigabitEthernet1 10.0.0.0/8 is variably subnetted, 6 subnets, 2 masks O 10.0.24.0/24 [110/20] via 10.0.12.2, 00:24:07, GigabitEthernet1 O 10.0.34.0/24 [110/60] via 10.0.13.3, 00:03:31, GigabitEthernet2 R1#show ip route 192.0.2.0 % Network not in table R1#show ip cef 192.0.2.0 0.0.0.0/0 no route R1#show ip ospf Routing Process "ospf 1" with ID 1.1.1.1 Start time: 00:04:37.113, Time elapsed: 00:24:32.592 Supports only single TOS(TOS0) routes Supports opaque LSA Supports Link-local Signaling (LLS) Supports area transit capability Supports NSSA (compatible with RFC 3101) Supports Database Exchange Summary List Optimization (RFC 5243) Maximum number of non self-generated LSA allowed 50000 Current number of non self-generated LSA 12 Threshold for warning message 75% Ignore-time 5 minutes, reset-time 10 minutes Ignore-count allowed 5, current ignore-count 0 Event-log enabled, Maximum number of events: 1000, Mode: cyclic It is an area border router Router is not originating router-LSAs with maximum metric Initial SPF schedule delay 50 msecs Minimum hold time between two consecutive SPFs 200 msecs Maximum wait time between two consecutive SPFs 5000 msecs Incremental-SPF disabled Per-prefix-distribution disabled Initial LSA throttle delay 50 msecs Minimum hold time for LSA throttle 200 msecs Maximum wait time for LSA throttle 5000 msecs Minimum LSA arrival 100 msecs LSA group pacing timer 240 secs Interface flood pacing timer 33 msecs Retransmission pacing timer 66 msecs EXCHANGE/LOADING adjacency limit: initial 300, process maximum 300 Number of external LSA 0. Checksum Sum 0x000000 Number of opaque AS LSA 0. Checksum Sum 0x000000 Number of DCbitless external and opaque AS LSA 0 Number of DoNotAge external and opaque AS LSA 0 Number of areas in this router is 2. 2 normal 0 stub 0 nssa Number of areas transit capable is 0 External flood list length 0 IETF NSF helper support enabled Cisco NSF helper support enabled Reference bandwidth unit is 100 mbps Area BACKBONE(0) Number of interfaces in this area is 2 (1 loopback) Area has no authentication SPF algorithm last executed 00:03:26.061 ago SPF algorithm executed 9 times Area ranges are Number of LSA 9. Checksum Sum 0x03F7FF Number of opaque link LSA 0. Checksum Sum 0x000000 Number of DCbitless LSA 0 Number of indication LSA 0 Number of DoNotAge LSA 0 Flood list length 0 Area 1 Number of interfaces in this area is 1 Area has no authentication SPF algorithm last executed 00:03:19.786 ago SPF algorithm executed 10 times Area ranges are Number of LSA 13. Checksum Sum 0x06DDA7 Number of opaque link LSA 0. Checksum Sum 0x000000 Number of DCbitless LSA 0 Number of indication LSA 0 Number of DoNotAge LSA 0 Flood list length 0 R1#show ip ospf interface brief Interface PID Area IP Address/Mask Cost State Nbrs F/C Lo0 1 0 1.1.1.1/32 1 LOOP 0/0 Gi1 1 0 10.0.12.1/24 10 P2P 1/1 Gi2 1 1 10.0.13.1/24 30 P2P 1/1 R1#show ip ospf neighbor Neighbor ID Pri State Dead Time Address Interface 2.2.2.2 0 FULL/ - 00:00:30 10.0.12.2 GigabitEthernet1 3.3.3.3 0 FULL/ - 00:00:31 10.0.13.3 GigabitEthernet2 R1#show ip ospf border-routers OSPF Router with ID (1.1.1.1) (Process ID 1) Base Topology (MTID 0) Internal Router Routing Table Codes: i - Intra-area route, I - Inter-area route i 4.4.4.4 [20] via 10.0.12.2, GigabitEthernet1, ABR, Area 0, SPF 9 i 4.4.4.4 [60] via 10.0.13.3, GigabitEthernet2, ABR, Area 1, SPF 10 R1#show ip ospf database OSPF Router with ID (1.1.1.1) (Process ID 1) Router Link States (Area 0) Link ID ADV Router Age Seq# Checksum Link count 1.1.1.1 1.1.1.1 1447 0x80000004 0x0005B5 3 2.2.2.2 2.2.2.2 207 0x80000006 0x00A681 5 4.4.4.4 4.4.4.4 1595 0x80000003 0x0091EA 3 Summary Net Link States (Area 0) Link ID ADV Router Age Seq# Checksum 3.3.3.3 1.1.1.1 211 0x80000003 0x0014F7 3.3.3.3 4.4.4.4 1593 0x80000001 0x00BD44 10.0.13.0 1.1.1.1 211 0x80000003 0x00827F 10.0.13.0 4.4.4.4 1593 0x80000001 0x005980 10.0.34.0 1.1.1.1 211 0x80000003 0x00C707 10.0.34.0 4.4.4.4 1602 0x80000001 0x00449E Router Link States (Area 1) Link ID ADV Router Age Seq# Checksum Link count 1.1.1.1 1.1.1.1 211 0x80000005 0x00EBB4 2 3.3.3.3 3.3.3.3 201 0x80000006 0x003A79 5 4.4.4.4 4.4.4.4 1593 0x80000002 0x00045A 2 Summary Net Link States (Area 1) Link ID ADV Router Age Seq# Checksum 1.1.1.1 1.1.1.1 1459 0x80000001 0x0047EC 1.1.1.1 4.4.4.4 1449 0x80000001 0x00B55E 2.2.2.2 1.1.1.1 1447 0x80000001 0x007DA8 2.2.2.2 4.4.4.4 1594 0x80000001 0x0023F6 4.4.4.4 1.1.1.1 1447 0x80000001 0x00858E 4.4.4.4 4.4.4.4 1602 0x80000001 0x0062B9 10.0.12.0 1.1.1.1 1459 0x80000001 0x00C850 10.0.12.0 4.4.4.4 1594 0x80000001 0x00D230 10.0.24.0 1.1.1.1 1447 0x80000001 0x00A85A 10.0.24.0 4.4.4.4 1602 0x80000001 0x00E917 R1#show ip ospf database external OSPF Router with ID (1.1.1.1) (Process ID 1) R1#show ip ospf database external 192.0.2.0 OSPF Router with ID (1.1.1.1) (Process ID 1) R1#show ip ospf database asbr-summary OSPF Router with ID (1.1.1.1) (Process ID 1) R1#show running-config | section router ospf router ospf 1 router-id 1.1.1.1