RP/0/RP0/CPU0:R4#show version Tue Sep 8 10:15:46.172 UTC Cisco IOS XR Software, Version 26.1.1 LNT Copyright (c) 2013-2026 by Cisco Systems, Inc. Build Information: Built By : cisco Built On : Thu Feb 26 03:41:18 UTC 2026 Build Host : iox-lnx-054 Workspace : /auto/srcarchive12/prod/26.1.1/xrd-control-plane/ws/ Version : 26.1.1 Label : 26.1.1 cisco XRd Control Plane cisco XRd-CP-C-01 processor with 248GB of memory R4 uptime is 8 minutes XRd Control Plane Container RP/0/RP0/CPU0:R4#show interface description Tue Sep 8 10:15:46.288 UTC Interface Status Protocol Description -------------------------------------------------------------------------------- Lo0 up up Nu0 up up Mg0/RP0/CPU0/0 up up management Gi0/0/0/0 up up to SW (10.0.0.0/24 segment) Gi0/0/0/1 admin-down admin-down Gi0/0/0/2 admin-down admin-down RP/0/RP0/CPU0:R4#show route Tue Sep 8 10:15:46.455 UTC Codes: C - connected, S - static, R - RIP, B - BGP, (>) - Diversion path 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, E - EGP i - ISIS, L1 - IS-IS level-1, L2 - IS-IS level-2 ia - IS-IS inter area, su - IS-IS summary null, * - candidate default U - per-user static route, o - ODR, L - local, G - DAGR, l - LISP A - access/subscriber, a - Application route M - mobile route, r - RPL, t - Traffic Engineering, (!) - FRR Backup path s - local SRv6 route, z - local IID route Gateway of last resort is not set O 1.1.1.1/32 [110/2] via 10.0.0.1, 00:05:21, GigabitEthernet0/0/0/0 O 2.2.2.2/32 [110/2] via 10.0.0.2, 00:05:21, GigabitEthernet0/0/0/0 L 4.4.4.4/32 is directly connected, 00:05:52, Loopback0 C 10.0.0.0/24 is directly connected, 00:05:47, GigabitEthernet0/0/0/0 L 10.0.0.4/32 is directly connected, 00:05:47, GigabitEthernet0/0/0/0 RP/0/RP0/CPU0:R4#show route ospf Tue Sep 8 10:15:46.633 UTC O 1.1.1.1/32 [110/2] via 10.0.0.1, 00:05:21, GigabitEthernet0/0/0/0 O 2.2.2.2/32 [110/2] via 10.0.0.2, 00:05:21, GigabitEthernet0/0/0/0 RP/0/RP0/CPU0:R4#show ospf Tue Sep 8 10:15:46.920 UTC Routing Process "ospf 1" with ID 4.4.4.4 Role: Primary Active NSR (Non-stop routing) is Enabled Supports only single TOS(TOS0) routes Supports opaque LSA Maximum number of non self-generated LSA allowed 500000 Current number of non self-generated LSA 4 Threshold for warning message 75% Ignore-time 5 minutes, reset-time 10 minutes Ignore-count allowed 5, current ignore-count 0 Maximum number of external prefixes per router 50000 (suppress-neighbor) Warning threshold 75% Maximum Exchange time 10 Hold time 5 Max Recovery count 300 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 Initial LSA throttle delay 50 msecs Minimum hold time for LSA throttle 200 msecs Maximum wait time for LSA throttle 5000 msecs Minimum LSA interval 200 msecs. Minimum LSA arrival 100 msecs LSA refresh interval 1800 seconds Flood pacing interval 33 msecs. Retransmission pacing interval 66 msecs Adjacency stagger enabled; initial (per area): 2, maximum: 64 Number of neighbors forming: 0, 2 full Maximum number of configured interfaces 1024 Number of external LSA 0. Checksum Sum 00000000 Number of opaque AS LSA 0. Checksum Sum 00000000 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 1. 1 normal 0 stub 0 nssa External flood list length 0 SNMP trap is enabled LSD not connected, revision 0 Segment Routing Global Block default (16000-23999), not allocated Segment Routing Local Block, unknown Segment Routing prefix-sid-map, Advertise local: Disabled, Receive remote: Disabled Strict-SPF capability is enabled Area BACKBONE(0) Number of interfaces in this area is 2 SPF algorithm executed 7 times Number of LSA 5. Checksum Sum 0x04347a Number of opaque link LSA 0. Checksum Sum 00000000 Number of DCbitless LSA 0 Number of indication LSA 0 Number of DoNotAge LSA 0 Flood list length 0 Number of LFA enabled interfaces 0, LFA revision 0 Number of Per Prefix LFA enabled interfaces 0 Number of neighbors forming in staggered mode 0, 2 full RP/0/RP0/CPU0:R4#show ospf interface Tue Sep 8 10:15:47.531 UTC Interfaces for OSPF 1 Loopback0 is up, line protocol is up Internet Address 4.4.4.4/32, Area 0, SID 0, Strict-SPF SID 0 Label stack Primary label 0 Backup label 0 SRTE label 0 Process ID 1, Router ID 4.4.4.4, Network Type LOOPBACK, Cost: 1 Loopback interface is treated as a stub Host Multi-area interface Count is 0 GigabitEthernet0/0/0/0 is up, line protocol is up Internet Address 10.0.0.4/24, Area 0, SID 0, Strict-SPF SID 0 Label stack Primary label 0 Backup label 0 SRTE label 0 Process ID 1, Router ID 4.4.4.4, Network Type BROADCAST, Cost: 1 Transmit Delay is 1 sec, State DROTHER, Priority 1, MTU 1500, MaxPktSz 1500 Forward reference No, Unnumbered no, Bandwidth 1000000 RIB LC sync Yes Designated Router (ID) 1.1.1.1, Interface address 10.0.0.1 Backup Designated router (ID) 2.2.2.2, Interface address 10.0.0.2 Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5 Hello due in 00:00:09:100 Index 1/1, flood queue length 0 Next 0(0)/0(0) Last flood scan length is 0, maximum is 1 Last flood scan time is 0 msec, maximum is 0 msec LS Ack List: current length 0, high water mark 4 Neighbor Count is 2, Adjacent neighbor count is 2 Adjacent with neighbor 1.1.1.1 (Designated Router) Adjacent with neighbor 2.2.2.2 (Backup Designated Router) Suppress hello for 0 neighbor(s) Multi-area interface Count is 0 Segment Routing Forwarding MPLS enabled: Yes Adjacency hold timer expired last : Never Exchange timer expired last : Never RP/0/RP0/CPU0:R4#show ospf interface brief Tue Sep 8 10:15:48.128 UTC * Indicates MADJ interface, (P) Indicates fast detect hold down state Interfaces for OSPF 1 Interface PID Area IP Address/Mask Cost State Nbrs F/C Lo0 1 0 4.4.4.4/32 1 LOOP 0/0 Gi0/0/0/0 1 0 10.0.0.4/24 1 DROTH 2/2 RP/0/RP0/CPU0:R4#show ospf neighbor Tue Sep 8 10:15:48.814 UTC * Indicates MADJ interface # Indicates Neighbor awaiting BFD session up Neighbors for OSPF 1 Neighbor ID Pri State Dead Time Address Interface 1.1.1.1 100 FULL/DR 00:00:30 10.0.0.1 GigabitEthernet0/0/0/0 Neighbor is up for 00:05:48 2.2.2.2 50 FULL/BDR 00:00:37 10.0.0.2 GigabitEthernet0/0/0/0 Neighbor is up for 00:05:43 Total neighbor count: 2 RP/0/RP0/CPU0:R4#show ospf neighbor detail Tue Sep 8 10:15:49.554 UTC * Indicates MADJ interface # Indicates Neighbor awaiting BFD session up Neighbors for OSPF 1 Neighbor 1.1.1.1, interface address 10.0.0.1 In the area 0 via interface GigabitEthernet0/0/0/0 Neighbor priority is 100, State is FULL, 6 state changes DR is 10.0.0.1 BDR is 10.0.0.2 Options is 0x52 LLS Options is 0x1 (LR) Dead timer due in 00:00:39 Neighbor is up for 00:05:49 Number of DBD retrans during last exchange 0 Index 2/2, retransmission queue length 0, number of retransmission 0 First 0(0)/0(0) Next 0(0)/0(0) Last retransmission scan length is 0, maximum is 0 Last retransmission scan time is 0 msec, maximum is 0 msec LS Ack list: NSR-sync pending 0, high water mark 0 Neighbor Interface ID: 3 Capabilities TLV Not Advertised in RI LSA Neighbor 2.2.2.2, interface address 10.0.0.2 In the area 0 via interface GigabitEthernet0/0/0/0 Neighbor priority is 50, State is FULL, 6 state changes DR is 10.0.0.1 BDR is 10.0.0.2 Options is 0x52 LLS Options is 0x1 (LR) Dead timer due in 00:00:36 Neighbor is up for 00:05:44 Number of DBD retrans during last exchange 0 Index 1/1, retransmission queue length 0, number of retransmission 0 First 0(0)/0(0) Next 0(0)/0(0) Last retransmission scan length is 0, maximum is 0 Last retransmission scan time is 0 msec, maximum is 0 msec LS Ack list: NSR-sync pending 0, high water mark 0 Capabilities TLV Not Advertised in RI LSA Total neighbor count: 2 RP/0/RP0/CPU0:R4#show ospf database Tue Sep 8 10:15:50.320 UTC OSPF Router with ID (4.4.4.4) (Process ID 1) Router Link States (Area 0) Link ID ADV Router Age Seq# Checksum Link count 1.1.1.1 1.1.1.1 333 0x80000003 0x0015e8 2 2.2.2.2 2.2.2.2 332 0x80000003 0x0005eb 2 3.3.3.3 3.3.3.3 326 0x80000003 0x00f4ee 2 4.4.4.4 4.4.4.4 325 0x80000003 0x00e4f1 2 Net Link States (Area 0) Link ID ADV Router Age Seq# Checksum 10.0.0.1 1.1.1.1 123 0x80000003 0x008880 RP/0/RP0/CPU0:R4#show ospf database router Tue Sep 8 10:15:50.870 UTC OSPF Router with ID (4.4.4.4) (Process ID 1) Router Link States (Area 0) Routing Bit Set on this LSA LS age: 334 Options: (No TOS-capability, DC) LS Type: Router Links Link State ID: 1.1.1.1 Advertising Router: 1.1.1.1 LS Seq Number: 80000003 Checksum: 0x15e8 Length: 48 Number of Links: 2 Link connected to: a Stub Network (Link ID) Network/subnet number: 1.1.1.1 (Link Data) Network Mask: 255.255.255.255 Number of TOS metrics: 0 TOS 0 Metrics: 1 Link connected to: a Transit Network (Link ID) Designated Router address: 10.0.0.1 (Link Data) Router Interface address: 10.0.0.1 Number of TOS metrics: 0 TOS 0 Metrics: 1 Routing Bit Set on this LSA LS age: 333 Options: (No TOS-capability, DC) LS Type: Router Links Link State ID: 2.2.2.2 Advertising Router: 2.2.2.2 LS Seq Number: 80000003 Checksum: 0x5eb Length: 48 Number of Links: 2 Link connected to: a Stub Network (Link ID) Network/subnet number: 2.2.2.2 (Link Data) Network Mask: 255.255.255.255 Number of TOS metrics: 0 TOS 0 Metrics: 1 Link connected to: a Transit Network (Link ID) Designated Router address: 10.0.0.1 (Link Data) Router Interface address: 10.0.0.2 Number of TOS metrics: 0 TOS 0 Metrics: 1 Adv Router is not-reachable LS age: 327 Options: (No TOS-capability, DC) LS Type: Router Links Link State ID: 3.3.3.3 Advertising Router: 3.3.3.3 LS Seq Number: 80000003 Checksum: 0xf4ee Length: 48 Number of Links: 2 Link connected to: a Stub Network (Link ID) Network/subnet number: 3.3.3.3 (Link Data) Network Mask: 255.255.255.255 Number of TOS metrics: 0 TOS 0 Metrics: 1 Link connected to: a Transit Network (Link ID) Designated Router address: 10.0.0.1 (Link Data) Router Interface address: 10.0.0.3 Number of TOS metrics: 0 TOS 0 Metrics: 1 LS age: 326 Options: (No TOS-capability, DC) LS Type: Router Links Link State ID: 4.4.4.4 Advertising Router: 4.4.4.4 LS Seq Number: 80000003 Checksum: 0xe4f1 Length: 48 Number of Links: 2 Link connected to: a Stub Network (Link ID) Network/subnet number: 4.4.4.4 (Link Data) Network Mask: 255.255.255.255 Number of TOS metrics: 0 TOS 0 Metrics: 1 Link connected to: a Transit Network (Link ID) Designated Router address: 10.0.0.1 (Link Data) Router Interface address: 10.0.0.4 Number of TOS metrics: 0 TOS 0 Metrics: 1 RP/0/RP0/CPU0:R4#show ospf database network Tue Sep 8 10:15:51.457 UTC OSPF Router with ID (4.4.4.4) (Process ID 1) Net Link States (Area 0) Routing Bit Set on this LSA LS age: 125 Options: (No TOS-capability, DC) LS Type: Network Links Link State ID: 10.0.0.1 (address of Designated Router) Advertising Router: 1.1.1.1 LS Seq Number: 80000003 Checksum: 0x8880 Length: 36 Network Mask: /24 Attached Router: 1.1.1.1 Attached Router: 2.2.2.2 Attached Router: 4.4.4.4 RP/0/RP0/CPU0:R4#show ospf statistics interface Tue Sep 8 10:15:52.276 UTC Interface Loopback0 Process ID 1 Area 0 OSPF packet and LSA statistics RX(hello) RX(router) TX LSA RX LSA TX Hello 0 - 0 - - DB Des 0 0 0 0 0 LS Req 0 0 0 0 0 LS Upd 0 0 0 0 0 LS Ack 0 0 0 0 0 TOTAL 0 0 0 0 0 OSPF Header Errors Version 0 LLS 0 Type 0 Auth RX 0 Length 0 Auth TX 0 Checksum 0 OSPF LSA Errors Type 0 Checksum 0 Length 0 Data 0 OSPF Errors Bad Source 0 Area Mismatch 0 No Virtual Link 0 Self Originated 0 No Sham Link 0 Duplicate ID 0 Nbr ignored 0 Graceful Shutdown 0 Unknown nbr 0 Passive intf 0 No DR/BDR 0 Disabled intf 0 Enqueue hello 0 Enqueue router 0 Unspecified RX 0 Unspecified TX 0 Socket 0 Interface GigabitEthernet0/0/0/0 Process ID 1 Area 0 OSPF packet and LSA statistics RX(hello) RX(router) TX LSA RX LSA TX Hello 95 - 38 - - DB Des 10 10 4 6 2 LS Req 2 2 2 2 0 LS Upd 12 12 3 14 3 LS Ack 6 6 4 4 7 TOTAL 125 30 51 26 12 OSPF Header Errors Version 0 LLS 0 Type 0 Auth RX 0 Length 0 Auth TX 0 Checksum 0 OSPF LSA Errors Type 0 Checksum 0 Length 0 Data 0 OSPF Errors Bad Source 0 Area Mismatch 0 No Virtual Link 0 Self Originated 0 No Sham Link 0 Duplicate ID 0 Nbr ignored 0 Graceful Shutdown 0 Unknown nbr 0 Passive intf 0 No DR/BDR 0 Disabled intf 0 Enqueue hello 0 Enqueue router 0 Unspecified RX 0 Unspecified TX 0 Socket 0 RP/0/RP0/CPU0:R4#show ospf database network self-originate Tue Sep 8 10:15:52.867 UTC OSPF Router with ID (4.4.4.4) (Process ID 1) RP/0/RP0/CPU0:R4#show ospf database router self-originate Tue Sep 8 10:15:53.775 UTC OSPF Router with ID (4.4.4.4) (Process ID 1) Router Link States (Area 0) LS age: 329 Options: (No TOS-capability, DC) LS Type: Router Links Link State ID: 4.4.4.4 Advertising Router: 4.4.4.4 LS Seq Number: 80000003 Checksum: 0xe4f1 Length: 48 Number of Links: 2 Link connected to: a Stub Network (Link ID) Network/subnet number: 4.4.4.4 (Link Data) Network Mask: 255.255.255.255 Number of TOS metrics: 0 TOS 0 Metrics: 1 Link connected to: a Transit Network (Link ID) Designated Router address: 10.0.0.1 (Link Data) Router Interface address: 10.0.0.4 Number of TOS metrics: 0 TOS 0 Metrics: 1 RP/0/RP0/CPU0:R4#show ospf border-routers Tue Sep 8 10:15:54.532 UTC RP/0/RP0/CPU0:R4#show ospf routes Tue Sep 8 10:15:55.261 UTC Topology Table for ospf 1 with ID 4.4.4.4 Codes: O - Intra area, O IA - Inter area O E1 - External type 1, O E2 - External type 2 O N1 - NSSA external type 1, O N2 - NSSA external type 2 O 1.1.1.1/32, metric 2 10.0.0.1, from 1.1.1.1, via GigabitEthernet0/0/0/0, ifIndex 3, path-id 1 O 2.2.2.2/32, metric 2 10.0.0.2, from 2.2.2.2, via GigabitEthernet0/0/0/0, ifIndex 3, path-id 1 O 4.4.4.4/32, metric 1 4.4.4.4, directly connected, via Loopback0, ifIndex 7 O 10.0.0.0/24, metric 1 10.0.0.4, directly connected, via GigabitEthernet0/0/0/0, ifIndex 3 RP/0/RP0/CPU0:R4#show ospf database database-summary Tue Sep 8 10:15:55.972 UTC OSPF Router with ID (4.4.4.4) (Process ID 1) Area 0 database summary LSA Type Count Delete Maxage Router 4 0 0 Network 1 0 0 Summary Net 0 0 0 Summary ASBR 0 0 0 Type-7 Ext 0 0 0 Opaque Link 0 0 0 Opaque Area 0 0 0 Subtotal 5 0 0 Process 1 database summary Router 4 0 0 Network 1 0 0 Summary Net 0 0 0 Summary ASBR 0 0 0 Type-7 Ext 0 0 0 Opaque Link 0 0 0 Opaque Area 0 0 0 Type-5 Ext 0 0 0 Opaque AS 0 0 0 Total 5 0 0