RP/0/RP0/CPU0:R1#show version Tue Sep 8 05:46:20.598 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 R1 uptime is 20 minutes XRd Control Plane Container RP/0/RP0/CPU0:R1#show interface description Tue Sep 8 05:46:20.709 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 R2 (10.1.2.0/24) Gi0/0/0/1 admin-down admin-down Gi0/0/0/2 admin-down admin-down RP/0/RP0/CPU0:R1#show route Tue Sep 8 05:46:21.097 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 L 1.1.1.1/32 is directly connected, 00:18:08, Loopback0 C 10.1.2.0/24 is directly connected, 00:18:02, GigabitEthernet0/0/0/0 L 10.1.2.1/32 is directly connected, 00:18:02, GigabitEthernet0/0/0/0 RP/0/RP0/CPU0:R1#show route isis Tue Sep 8 05:46:21.318 UTC % No matching routes found RP/0/RP0/CPU0:R1#show isis Tue Sep 8 05:46:21.456 UTC IS-IS Router: 1 System Id: 0010.0100.1001 Hostname: R1 IS Levels: level-1 Manual area address(es): 49.0001 Routing for area address(es): 49.0001 Multi-Instance Id: 0 Running on: RP/0/RP0/CPU0 Job Id: 1003 PID: 4363 Respawn count: 1 Started: Tue 2026 Sep 08 05:28:01.368 UTC Null0 ready: Tue 2026 Sep 08 05:28:03.163 UTC Protocol shutdown: No System memory state: Normal Last change: never Memory state: Normal Last change: never Last/Initial memory usage/limit: 1596873/2147483648 0% Memory state monitoring interval: 60 s Memory usage/limit: 13769753/2147483648 0% Memory usage specifics (count/bytes): Nodes: 1/408 LSPs: 1/423 Links: 0/0 Prefixes: 2/688 Nets: 2/608 Paths: 0/0 LSP MTU: 1492 LSP Full: level-1: No, level-2: No LSP fast flooding: Disabled Max LSP Tx: 1000 PSNP Delay: 500 ms PSNP interval: 50 ms Non-stop forwarding: Disabled Most recent startup mode: Cold Restart MFI LSD registered: No MFI LSD last registered: never TE connection status: Down TE connection up: never TE connection flaps: 0 XTC connection status: Down XTC connection up: never XTC connection flaps: 0 BFD connection status: Up BFD connection up: Tue 2026 Sep 08 05:28:04.165 UTC BFD connection flaps: 0 BFD HA role change: never BFD client HA role: none BFD server HA role: none Overload Bit: not configured Maximum Metric: not configured Topologies supported by IS-IS: IPv4 Unicast Rib connected Level-1 Metric style (generate/accept): Narrow/Narrow Metric: 10 No protocols redistributed Distance: 115 Advertise Passive Interface Prefixes Only: No Interfaces supported by IS-IS 1: Loopback0 is running passively (passive in configuration) GigabitEthernet0/0/0/0 is running actively (active in configuration) RP/0/RP0/CPU0:R1#show isis hostname Tue Sep 8 05:46:21.610 UTC IS-IS 1 hostnames Level System ID Dynamic Hostname 1 * 0010.0100.1001 R1 RP/0/RP0/CPU0:R1#show isis interface Tue Sep 8 05:46:21.718 UTC IS-IS 1 Interfaces Loopback0 Enabled Adjacency Formation: Disabled (Passive in IS-IS cfg) Prefix Advertisement: Enabled Bandwidth: 0 Circuit Type: level-1 (Configured: level-1-2) Media Type: Loop Circuit Number: 0 IPv4 Unicast Topology: Enabled Adjacency Formation: Disabled (Intf passive in IS-IS cfg) Prefix Advertisement: Running Policy (L1/L2): -/- Metric (L1/L2): 0/0 Metric fallback: Bandwidth (L1/L2): Inactive/Inactive Anomaly (L1/L2): Inactive/Inactive Weight (L1/L2): 0/0 MPLS Max Label Stack: 0/0/0/0 (PRI/BKP/SRTE/SRAT) MPLS LDP Sync (L1/L2): Disabled/Disabled IPv4 Address Family: Enabled Protocol State: Up Forwarding Address: None (Intf passive in IS-IS cfg) Global Prefix: 1.1.1.1/32 PME Link Delays and Loss: - GigabitEthernet0/0/0/0 Enabled Adjacency Formation: Enabled Prefix Advertisement: Enabled Bandwidth: 1000000 RSI SRLG: Not Registered Circuit Type: level-1 (Configured: level-1-2) Media Type: P2P Circuit Number: 0 Extended Circuit Number: 4 Last IIH Received: 05:46:16 (5.59 sec ago), 1497 octets Last PDU Rejected: 05:46:16 (5.59 sec ago), 1497 octets, P2P IIH, Level or Area Addr mismatch Last IIH Sent: 05:46:14 (7.68 sec ago), 1497 octets Sending next P2P IIH in: 299 ms IPv4 BFD: Disabled IPv6 BFD: Disabled Level-1 Adjacency Count: 0 Adjacency Flaps: 1 LSP Pacing Interval: 33 ms PSNP Entry Queue Size: 0 Hello Interval: 10 s Hello Multiplier: 3 CLNS I/O Protocol State: Up MTU: 1497 SNPA: 5254.0025.fcb7 Layer-2 Multicast: All ISs: Listening IPv4 Unicast Topology: Enabled Adjacency Formation: Running Prefix Advertisement: Running Policy (L1/L2): -/- Metric (L1/L2): 10/10 Metric fallback: Bandwidth (L1/L2): Inactive/Inactive Anomaly (L1/L2): Inactive/Inactive Weight (L1/L2): 0/0 MPLS Max Label Stack: 1/3/7/7 (PRI/BKP/SRTE/SRAT) MPLS LDP Sync (L1/L2): Disabled/Disabled FRR (L1/L2): L1 Not Enabled L2 Not Enabled FRR Type: None None IPv4 Address Family: Enabled Protocol State: Up Forwarding Address: 10.1.2.1 Global Prefix: 10.1.2.0/24 LSP Transmission is: idle LSP Transmit Timer in: 0 ms LSP Burst Size: 10 LSPs in the next 0 ms LSP Rexmit Queue Size: 0 Adjacency Up: never Received CSNP complete: never LSP Pacing Start: never LSP fast flooding: Disabled PME Link Delays and Loss: - RP/0/RP0/CPU0:R1#show isis interface brief Tue Sep 8 05:46:21.875 UTC IS-IS 1 Interfaces Interface All Adjs Adj Topos Adv Topos CLNS MTU Prio OK L1 L2 Run/Cfg Run/Cfg L1 L2 ----------------- --- --------- --------- --------- ---- ---- -------- Lo0 Yes - - 0/0 1/1 No - - - Gi0/0/0/0 Yes 0 - 1/1 1/1 Up 1497 - - RP/0/RP0/CPU0:R1#show isis neighbors Tue Sep 8 05:46:22.066 UTC IS-IS 1 neighbors: System Id Interface SNPA State Holdtime Type IETF-NSF RP/0/RP0/CPU0:R1#show isis neighbors detail Tue Sep 8 05:46:22.179 UTC IS-IS 1 neighbors: System Id Interface SNPA State Holdtime Type IETF-NSF RP/0/RP0/CPU0:R1#show isis database Tue Sep 8 05:46:22.296 UTC IS-IS 1 (Level-1) Link State Database LSPID LSP Seq Num LSP Checksum LSP Holdtime/Rcvd ATT/P/OL R1.00-00 * 0x00000007 0xb740 1097 /* 0/0/0 Total Level-1 LSP count: 1 Local Level-1 LSP count: 1 RP/0/RP0/CPU0:R1#show isis database detail Tue Sep 8 05:46:22.438 UTC IS-IS 1 (Level-1) Link State Database LSPID LSP Seq Num LSP Checksum LSP Holdtime/Rcvd ATT/P/OL R1.00-00 * 0x00000007 0xb740 1097 /* 0/0/0 Area Address: 49.0001 LSP MTU: 1492 NLPID: 0xcc IP Address: 1.1.1.1 Hostname: R1 Metric: 0 IP 1.1.1.1/32 Metric: 10 IP 10.1.2.0/24 Total Level-1 LSP count: 1 Local Level-1 LSP count: 1 RP/0/RP0/CPU0:R1#show isis topology Tue Sep 8 05:46:22.579 UTC IS-IS 1 paths to IPv4 Unicast (Level-1) routers System Id Metric Next-Hop Interface SNPA R1 -- RP/0/RP0/CPU0:R1#show isis adjacency Tue Sep 8 05:46:22.713 UTC IS-IS 1 Level-1 adjacencies: System Id Interface SNPA State Hold Changed NSF IPv4 IPv6 BFD BFD RP/0/RP0/CPU0:R1#show isis adjacency detail Tue Sep 8 05:46:22.834 UTC IS-IS 1 Level-1 adjacencies: System Id Interface SNPA State Hold Changed NSF IPv4 IPv6 BFD BFD RP/0/RP0/CPU0:R1#show isis spf-log Tue Sep 8 05:46:22.954 UTC IS-IS 1 Level 1 IPv4 Unicast Route Calculation Log Capacity: 210, Size: 9 Time Total Trig. Timestamp Type (ms) Nodes Count First Trigger LSP Triggers ------------ ----- ----- ----- ----- -------------------- ---------------------- --- Tue Sep 8 2026 --- 05:28:14.359 FSPF 0 1 7 R1.00-00 CONFIG NEWNODE NEWLSP OVLSET PREFIXGOOD AREAADDR IPADDR 05:28:16.602 FSPF 0 1 1 R1.00-00 OVLCLR 05:28:18.803 PRC 0 1 1 R1.00-00 PREFIXGOOD 05:28:20.025 FSPF 0 2 5 0020.0200.2002.00-00 NEWNODE NEWLSP PREFIXGOOD AREAADDR IPADDR 05:28:22.902 FSPF 0 2 1 R1.00-00 LINKGOOD 05:28:26.103 FSPF 2 2 2 0020.0200.2002.00-00 ATTSET LINKGOOD 05:43:26.157 FSPF 0 2 1 PERIODIC 05:44:34.063 FSPF 2 2 7 0020.0200.2002.00-00 DELNODE LSPEXPIRY ATTCLR LINKBAD PREFIXBAD AREAADDR IPADDR 05:44:39.615 FSPF 0 2 1 R1.00-00 LINKBAD RP/0/RP0/CPU0:R1#show isis lsp-log Tue Sep 8 05:46:23.100 UTC IS-IS 1 Level 1 LSP Generation Log Capacity: 50, Size: 6 When Count Interface Triggers --- Tue Sep 8 2026 --- 05:28:04.469 2 CONFIG CONFIG 05:28:12.831 1 Lo0 IPUP 05:28:16.463 1 LSPDBOL 05:28:18.752 1 Gi0/0/0/0 IPUP 05:28:22.844 1 Gi0/0/0/0 SABIT 05:44:39.565 2 Gi0/0/0/0 DELADJ BESTADJ RP/0/RP0/CPU0:R1#show isis statistics Tue Sep 8 05:46:23.236 UTC IS-IS 1 Packet and Event Statistics Dropped Dropped Total PDUs Sent Received On Input By Update Hello: 127 125 0 - CSNP: 1 1 - 0 PSNP: 4 3 0 0 LSP: 3 5 0 0 LSP Retransmissions: 0 LSP Checksum Errors: 0 IS-IS Update Queue: 0/3500 Total Traffic: 9 High Water Mark: 1 HWM Set: Tue 2026 Sep 08 05:28:19.974 UTC Total Drops: 0 IS-IS Input Queue: 0/4200 Total Traffic: 134 High Water Mark: 1 Total Drops: 0 Level-1 LSPs sourced (new/refresh): 8/1 Route Calculations IPv4 Unicast Total: 9 Full SPF Calculations: 8 Periodic: 1 Partial Route Calc: 1 Next Hop Calculations: 0 RP/0/RP0/CPU0:R1#show cef Tue Sep 8 05:46:23.356 UTC Prefix Next Hop Interface ------------------- ------------------- ------------------ 0.0.0.0/0 drop default handler 0.0.0.0/32 broadcast 1.1.1.1/32 receive Loopback0 10.1.2.0/24 attached GigabitEthernet0/0/0/0 10.1.2.0/32 broadcast GigabitEthernet0/0/0/0 10.1.2.1/32 receive GigabitEthernet0/0/0/0 10.1.2.2/32 10.1.2.2/32 GigabitEthernet0/0/0/0 10.1.2.255/32 broadcast GigabitEthernet0/0/0/0 224.0.0.0/4 0.0.0.0/32 224.0.0.0/24 receive 255.255.255.255/32 broadcast