RP/0/RP0/CPU0:R1#show version Wed Sep 9 11:17:04.198 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 3 minutes XRd Control Plane Container RP/0/RP0/CPU0:R1#show interface description Wed Sep 9 11:17:04.684 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 Wed Sep 9 11:17:05.196 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 10.1.2.2 to network 0.0.0.0 i*L1 0.0.0.0/0 [115/10] via 10.1.2.2, 00:00:58, GigabitEthernet0/0/0/0 L 1.1.1.1/32 is directly connected, 00:01:21, Loopback0 i L1 2.2.2.2/32 [115/10] via 10.1.2.2, 00:01:03, GigabitEthernet0/0/0/0 C 10.1.2.0/24 is directly connected, 00:01:16, GigabitEthernet0/0/0/0 L 10.1.2.1/32 is directly connected, 00:01:16, GigabitEthernet0/0/0/0 RP/0/RP0/CPU0:R1#show route isis Wed Sep 9 11:17:05.898 UTC i*L1 0.0.0.0/0 [115/10] via 10.1.2.2, 00:00:58, GigabitEthernet0/0/0/0 i L1 2.2.2.2/32 [115/10] via 10.1.2.2, 00:01:03, GigabitEthernet0/0/0/0 RP/0/RP0/CPU0:R1#show isis Wed Sep 9 11:17:06.495 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: 4161 Respawn count: 1 Started: Wed 2026 Sep 09 11:15:33.212 UTC Null0 ready: Wed 2026 Sep 09 11:15:34.787 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: 13752430/2147483648 0% Memory usage specifics (count/bytes): Nodes: 2/816 LSPs: 2/840 Links: 2/2448 Prefixes: 5/1720 Nets: 4/2368 Paths: 6/576 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: Wed 2026 Sep 09 11:15:35.787 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 Wed Sep 9 11:17:06.999 UTC IS-IS 1 hostnames Level System ID Dynamic Hostname 1 * 0010.0100.1001 R1 1 0020.0200.2002 R2 RP/0/RP0/CPU0:R1#show isis interface Wed Sep 9 11:17:07.397 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: 11:17:01 (5.89 sec ago), 1497 octets Last IIH Sent: 11:17:02 (5.11 sec ago), 1497 octets Sending next P2P IIH in: 3 s IPv4 BFD: Disabled IPv6 BFD: Disabled Level-1 Adjacency Count: 1 Adjacency Flaps: 0 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: 5254.00a4.9ffb 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: 9 LSPs in the next 0 ms LSP Rexmit Queue Size: 0 Adjacency Up: 11:15:50.020 Received CSNP complete: 11:15:51.102 LSP Pacing Start: 11:15:51.021 LSP fast flooding: Disabled PME Link Delays and Loss: - RP/0/RP0/CPU0:R1#show isis interface brief Wed Sep 9 11:17:07.885 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 1 - 1/1 1/1 Up 1497 - - RP/0/RP0/CPU0:R1#show isis neighbors Wed Sep 9 11:17:08.208 UTC IS-IS 1 neighbors: System Id Interface SNPA State Holdtime Type IETF-NSF R2 Gi0/0/0/0 *PtoP* Up 23 L1 Capable Total neighbor count: 1 RP/0/RP0/CPU0:R1#show isis neighbors detail Wed Sep 9 11:17:08.715 UTC IS-IS 1 neighbors: System Id Interface SNPA State Holdtime Type IETF-NSF R2 Gi0/0/0/0 *PtoP* Up 22 L1 Capable Area Address(es): 49.0001 IPv4 Address(es): 10.1.2.2* Topologies: 'IPv4 Unicast' Uptime: 00:01:18 Total neighbor count: 1 RP/0/RP0/CPU0:R1#show isis database Wed Sep 9 11:17:09.197 UTC IS-IS 1 (Level-1) Link State Database LSPID LSP Seq Num LSP Checksum LSP Holdtime/Rcvd ATT/P/OL R1.00-00 * 0x00000005 0x2dee 1132 /* 0/0/0 R2.00-00 0x00000007 0xa066 1134 /1200 1/0/0 Total Level-1 LSP count: 2 Local Level-1 LSP count: 1 RP/0/RP0/CPU0:R1#show isis database detail Wed Sep 9 11:17:09.688 UTC IS-IS 1 (Level-1) Link State Database LSPID LSP Seq Num LSP Checksum LSP Holdtime/Rcvd ATT/P/OL R1.00-00 * 0x00000005 0x2dee 1132 /* 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 Metric: 10 IS R2.00 R2.00-00 0x00000007 0xa066 1133 /1200 1/0/0 Area Address: 49.0001 LSP MTU: 1492 NLPID: 0xcc IP Address: 2.2.2.2 Hostname: R2 Metric: 0 IP 2.2.2.2/32 Metric: 10 IP 10.1.2.0/24 Metric: 10 IS R1.00 Total Level-1 LSP count: 2 Local Level-1 LSP count: 1 RP/0/RP0/CPU0:R1#show isis topology Wed Sep 9 11:17:10.106 UTC IS-IS 1 paths to IPv4 Unicast (Level-1) routers System Id Metric Next-Hop Interface SNPA R1 -- R2 10 R2 Gi0/0/0/0 *PtoP* RP/0/RP0/CPU0:R1#show isis adjacency Wed Sep 9 11:17:10.501 UTC IS-IS 1 Level-1 adjacencies: System Id Interface SNPA State Hold Changed NSF IPv4 IPv6 BFD BFD R2 Gi0/0/0/0 *PtoP* Up 20 00:01:20 Yes None None Total adjacency count: 1 RP/0/RP0/CPU0:R1#show isis adjacency-log Wed Sep 9 11:17:11.100 UTC IS-IS 1 Level 1 Adjacency Log Capacity: 100, Size: 2 When System Interface State Details --- Wed Sep 9 2026 --- 11:15:49.412 R2 Gi0/0/0/0 d -> i 11:15:50.021 R2 Gi0/0/0/0 i -> u New adjacency IPv4 Unicast Up RP/0/RP0/CPU0:R1#show isis spf-log Wed Sep 9 11:17:11.583 UTC IS-IS 1 Level 1 IPv4 Unicast Route Calculation Log Capacity: 210, Size: 7 Time Total Trig. Timestamp Type (ms) Nodes Count First Trigger LSP Triggers ------------ ----- ----- ----- ----- -------------------- ---------------------- --- Wed Sep 9 2026 --- 11:15:45.893 FSPF 0 1 7 R1.00-00 CONFIG NEWNODE NEWLSP OVLSET PREFIXGOOD AREAADDR IPADDR 11:15:48.051 FSPF 0 1 1 R1.00-00 OVLCLR 11:15:50.078 FSPF 0 2 5 R2.00-00 NEWNODE NEWLSP PREFIXGOOD AREAADDR IPADDR 11:15:50.879 PRC 0 2 1 R1.00-00 PREFIXGOOD 11:15:53.449 FSPF 0 2 1 R2.00-00 LINKGOOD 11:16:02.366 FSPF 2 2 1 R1.00-00 LINKGOOD 11:16:07.369 PRC 1 2 1 R2.00-00 ATTSET RP/0/RP0/CPU0:R1#show isis lsp-log Wed Sep 9 11:17:11.987 UTC IS-IS 1 Level 1 LSP Generation Log Capacity: 50, Size: 5 When Count Interface Triggers --- Wed Sep 9 2026 --- 11:15:36.182 1 CONFIG 11:15:44.484 1 Lo0 IPUP 11:15:48.000 1 LSPDBOL 11:15:50.082 2 Gi0/0/0/0 MSD SABIT 11:16:02.315 1 Gi0/0/0/0 SABIT RP/0/RP0/CPU0:R1#show isis statistics Wed Sep 9 11:17:12.698 UTC IS-IS 1 Packet and Event Statistics Dropped Dropped Total PDUs Sent Received On Input By Update Hello: 13 12 0 - CSNP: 1 1 - 0 PSNP: 3 2 0 0 LSP: 2 3 0 0 LSP Retransmissions: 0 LSP Checksum Errors: 0 IS-IS Update Queue: 0/3500 Total Traffic: 6 High Water Mark: 1 HWM Set: Wed 2026 Sep 09 11:15:50.027 UTC Total Drops: 0 IS-IS Input Queue: 0/4200 Total Traffic: 18 High Water Mark: 1 Total Drops: 0 Level-1 LSPs sourced (new/refresh): 7/0 Route Calculations IPv4 Unicast Total: 7 Full SPF Calculations: 5 Periodic: 0 Partial Route Calc: 2 Next Hop Calculations: 0 RP/0/RP0/CPU0:R1#show cef Wed Sep 9 11:17:13.486 UTC Prefix Next Hop Interface ------------------- ------------------- ------------------ 0.0.0.0/0 10.1.2.2/32 GigabitEthernet0/0/0/0 0.0.0.0/32 broadcast 1.1.1.1/32 receive Loopback0 2.2.2.2/32 10.1.2.2/32 GigabitEthernet0/0/0/0 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