RP/0/RP0/CPU0:R1#show version Wed Sep 16 23:24:09.383 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 8 minutes XRd Control Plane Container RP/0/RP0/CPU0:R1#show interface description Wed Sep 16 23:24:09.574 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 peer (10.1.2.0/24 p2p) 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 16 23:24:09.882 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, 00:05:19, Loopback0 i L2 2.2.2.2/32 [115/10] via 10.1.2.2, 00:05:02, GigabitEthernet0/0/0/0 i L2 3.3.3.3/32 [115/20] via 10.1.2.2, 00:04:57, GigabitEthernet0/0/0/0 i L2 4.4.4.4/32 [115/20] via 10.1.2.2, 00:04:47, GigabitEthernet0/0/0/0 C 10.1.2.0/24 is directly connected, 00:05:14, GigabitEthernet0/0/0/0 L 10.1.2.1/32 is directly connected, 00:05:14, GigabitEthernet0/0/0/0 i L2 10.234.0.0/24 [115/20] via 10.1.2.2, 00:05:02, GigabitEthernet0/0/0/0 RP/0/RP0/CPU0:R1#show route isis Wed Sep 16 23:24:10.242 UTC i L2 2.2.2.2/32 [115/10] via 10.1.2.2, 00:05:03, GigabitEthernet0/0/0/0 i L2 3.3.3.3/32 [115/20] via 10.1.2.2, 00:04:58, GigabitEthernet0/0/0/0 i L2 4.4.4.4/32 [115/20] via 10.1.2.2, 00:04:48, GigabitEthernet0/0/0/0 i L2 10.234.0.0/24 [115/20] via 10.1.2.2, 00:05:03, GigabitEthernet0/0/0/0 RP/0/RP0/CPU0:R1#show isis Wed Sep 16 23:24:10.500 UTC IS-IS Router: 1 System Id: 0010.0100.1001 Hostname: R1 IS Levels: level-2-only 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: 4398 Respawn count: 1 Started: Wed 2026 Sep 16 23:18:38.234 UTC Null0 ready: Wed 2026 Sep 16 23:18:39.748 UTC Protocol shutdown: No System memory state: Normal Last change: never Memory state: Normal Last change: never Last/Initial memory usage/limit: 1597148/2147483648 0% Memory state monitoring interval: 60 s Memory usage/limit: 13830093/2147483648 0% Memory usage specifics (count/bytes): Nodes: 5/2040 LSPs: 5/2088 Links: 8/9792 Prefixes: 9/8280 Nets: 6/3744 Paths: 10/960 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 16 23:18:40.837 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-2 Metric style (generate/accept): Wide/Wide 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 interface Wed Sep 16 23:24:10.656 UTC IS-IS 1 Interfaces Loopback0 Enabled Adjacency Formation: Disabled (Passive in IS-IS cfg) Prefix Advertisement: Enabled Bandwidth: 0 Circuit Type: level-2-only (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-2-only (Configured: level-1-2) Media Type: P2P Circuit Number: 0 Extended Circuit Number: 4 Last IIH Received: 23:24:08 (1.87 sec ago), 1497 octets Last IIH Sent: 23:24:06 (3.93 sec ago), 1497 octets Sending next P2P IIH in: 5 s IPv4 BFD: Disabled IPv6 BFD: Disabled Level-2 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: 5254.00b1.9cd7 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: 23:19:02.667 Received CSNP complete: 23:19:02.976 LSP Pacing Start: 23:19:02.976 LSP fast flooding: Disabled PME Link Delays and Loss: - RP/0/RP0/CPU0:R1#show isis neighbors Wed Sep 16 23:24:10.804 UTC IS-IS 1 neighbors: System Id Interface SNPA State Holdtime Type IETF-NSF R2 Gi0/0/0/0 *PtoP* Up 27 L2 Capable Total neighbor count: 1 RP/0/RP0/CPU0:R1#show isis database Wed Sep 16 23:24:11.049 UTC IS-IS 1 (Level-2) Link State Database LSPID LSP Seq Num LSP Checksum LSP Holdtime/Rcvd ATT/P/OL R1.00-00 * 0x00000005 0xc1d8 895 /* 0/0/0 R2.00-00 0x00000007 0x4562 900 /1200 0/0/0 R3.00-00 0x00000005 0xb583 896 /1200 0/0/0 R3.01-00 0x00000005 0xee37 907 /1200 0/0/0 R4.00-00 0x00000005 0x6e9f 905 /1200 0/0/0 Total Level-2 LSP count: 5 Local Level-2 LSP count: 1 RP/0/RP0/CPU0:R1#show isis database detail Wed Sep 16 23:24:11.270 UTC IS-IS 1 (Level-2) Link State Database LSPID LSP Seq Num LSP Checksum LSP Holdtime/Rcvd ATT/P/OL R1.00-00 * 0x00000005 0xc1d8 894 /* 0/0/0 Area Address: 49.0001 LSP MTU: 1492 NLPID: 0xcc IP Address: 1.1.1.1 Hostname: R1 Metric: 10 IS-Extended R2.00 Metric: 0 IP-Extended 1.1.1.1/32 Metric: 10 IP-Extended 10.1.2.0/24 R2.00-00 0x00000007 0x4562 900 /1200 0/0/0 Area Address: 49.0001 LSP MTU: 1492 NLPID: 0xcc IP Address: 2.2.2.2 Hostname: R2 Metric: 10 IS-Extended R1.00 Metric: 10 IS-Extended R3.01 Metric: 0 IP-Extended 2.2.2.2/32 Metric: 10 IP-Extended 10.1.2.0/24 Metric: 10 IP-Extended 10.234.0.0/24 R3.00-00 0x00000005 0xb583 896 /1200 0/0/0 Area Address: 49.0001 LSP MTU: 1492 NLPID: 0xcc IP Address: 3.3.3.3 Hostname: R3 Metric: 10 IS-Extended R3.01 Metric: 0 IP-Extended 3.3.3.3/32 Metric: 10 IP-Extended 10.234.0.0/24 R3.01-00 0x00000005 0xee37 907 /1200 0/0/0 Metric: 0 IS-Extended R4.00 Metric: 0 IS-Extended R2.00 Metric: 0 IS-Extended R3.00 R4.00-00 0x00000005 0x6e9f 905 /1200 0/0/0 Area Address: 49.0001 LSP MTU: 1492 NLPID: 0xcc IP Address: 4.4.4.4 Hostname: R4 Metric: 10 IS-Extended R3.01 Metric: 0 IP-Extended 4.4.4.4/32 Metric: 10 IP-Extended 10.234.0.0/24 Total Level-2 LSP count: 5 Local Level-2 LSP count: 1 RP/0/RP0/CPU0:R1#show isis statistics Wed Sep 16 23:24:11.449 UTC IS-IS 1 Packet and Event Statistics Dropped Dropped Total PDUs Sent Received On Input By Update Hello: 3 3 0 - CSNP: 0 0 - 0 PSNP: 0 0 0 0 LSP: 0 0 0 0 LSP Retransmissions: 0 LSP Checksum Errors: 0 IS-IS Update Queue: 0/3500 Total Traffic: 0 High Water Mark: 0 Total Drops: 0 IS-IS Input Queue: 0/4200 Total Traffic: 3 High Water Mark: 1 Total Drops: 0 Level-2 LSPs sourced (new/refresh): 0/0 Route Calculations IPv4 Unicast Total: 0 Full SPF Calculations: 0 Periodic: 0 Partial Route Calc: 0 Next Hop Calculations: 0 RP/0/RP0/CPU0:R1#show running-config router isis Wed Sep 16 23:24:11.572 UTC router isis 1 is-type level-2-only net 49.0001.0010.0100.1001.00 log adjacency changes address-family ipv4 unicast metric-style wide ! interface Loopback0 passive address-family ipv4 unicast ! ! interface GigabitEthernet0/0/0/0 point-to-point address-family ipv4 unicast metric 10 ! ! ! RP/0/RP0/CPU0:R1#show configuration commit list Wed Sep 16 23:24:12.681 UTC SNo. Label/ID User Line Client Time Stamp ~~~~ ~~~~~~~~ ~~~~ ~~~~ ~~~~~~ ~~~~~~~~~~ 1 1000000001 cisco con0_RP0_CPU0 CLI Wed Sep 16 23:19:41 2026 RP/0/RP0/CPU0:R1#show isis adjacency-log Wed Sep 16 23:24:12.865 UTC IS-IS 1 Level 2 Adjacency Log Capacity: 100, Size: 2 When System Interface State Details --- Wed Sep 16 2026 --- 23:19:02.058 R2 Gi0/0/0/0 d -> i 23:19:02.668 R2 Gi0/0/0/0 i -> u New adjacency IPv4 Unicast Up RP/0/RP0/CPU0:R1#show isis lsp-log Wed Sep 16 23:24:13.185 UTC IS-IS 1 Level 2 LSP Generation Log Capacity: 50, Size: 5 When Count Interface Triggers --- Wed Sep 16 2026 --- 23:18:41.197 1 CONFIG 23:18:50.681 1 Lo0 IPUP 23:18:54.052 1 LSPDBOL 23:18:58.050 1 Gi0/0/0/0 MSD 23:19:06.344 1 Gi0/0/0/0 SABIT