RP/0/RP0/CPU0:R2#show version Sat Sep 12 02:08:54.047 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 R2 uptime is 40 minutes XRd Control Plane Container RP/0/RP0/CPU0:R2#show interface description Sat Sep 12 02:08:54.189 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 R1 (10.1.2.0/24 p2p) Gi0/0/0/1 up up to R4 (10.2.4.0/24 p2p) Gi0/0/0/2 admin-down admin-down RP/0/RP0/CPU0:R2#show route Sat Sep 12 02:08:54.362 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 i L1 1.1.1.1/32 [115/10] via 10.1.2.1, 00:37:55, GigabitEthernet0/0/0/0 L 2.2.2.2/32 is directly connected, 00:38:34, Loopback0 i L1 3.3.3.3/32 [115/30] via 10.1.2.1, 00:34:52, GigabitEthernet0/0/0/0 i L2 4.4.4.4/32 [115/10] via 10.2.4.4, 00:32:07, GigabitEthernet0/0/0/1 C 10.1.2.0/24 is directly connected, 00:38:28, GigabitEthernet0/0/0/0 L 10.1.2.2/32 is directly connected, 00:38:28, GigabitEthernet0/0/0/0 i L1 10.1.3.0/24 [115/30] via 10.1.2.1, 00:37:55, GigabitEthernet0/0/0/0 C 10.2.4.0/24 is directly connected, 00:38:28, GigabitEthernet0/0/0/1 L 10.2.4.2/32 is directly connected, 00:38:28, GigabitEthernet0/0/0/1 i L1 10.3.4.0/24 [115/40] via 10.1.2.1, 00:34:52, GigabitEthernet0/0/0/0 i su 172.16.0.0/22 [115/10] via 0.0.0.0, 00:04:34, Null0 i L1 172.16.0.0/24 [115/60] via 10.1.2.1, 00:01:58, GigabitEthernet0/0/0/0 i L1 172.16.1.0/24 [115/10] via 10.1.2.1, 00:37:55, GigabitEthernet0/0/0/0 i L1 172.16.2.0/24 [115/10] via 10.1.2.1, 00:37:55, GigabitEthernet0/0/0/0 i L1 172.16.3.0/24 [115/10] via 10.1.2.1, 00:37:55, GigabitEthernet0/0/0/0 RP/0/RP0/CPU0:R2#show route isis Sat Sep 12 02:08:54.540 UTC i L1 1.1.1.1/32 [115/10] via 10.1.2.1, 00:37:56, GigabitEthernet0/0/0/0 i L1 3.3.3.3/32 [115/30] via 10.1.2.1, 00:34:52, GigabitEthernet0/0/0/0 i L2 4.4.4.4/32 [115/10] via 10.2.4.4, 00:32:07, GigabitEthernet0/0/0/1 i L1 10.1.3.0/24 [115/30] via 10.1.2.1, 00:37:56, GigabitEthernet0/0/0/0 i L1 10.3.4.0/24 [115/40] via 10.1.2.1, 00:34:52, GigabitEthernet0/0/0/0 i su 172.16.0.0/22 [115/10] via 0.0.0.0, 00:04:34, Null0 i L1 172.16.0.0/24 [115/60] via 10.1.2.1, 00:01:58, GigabitEthernet0/0/0/0 i L1 172.16.1.0/24 [115/10] via 10.1.2.1, 00:37:56, GigabitEthernet0/0/0/0 i L1 172.16.2.0/24 [115/10] via 10.1.2.1, 00:37:56, GigabitEthernet0/0/0/0 i L1 172.16.3.0/24 [115/10] via 10.1.2.1, 00:37:56, GigabitEthernet0/0/0/0 RP/0/RP0/CPU0:R2#show route 172.16.0.0/22 Sat Sep 12 02:08:54.734 UTC Routing entry for 172.16.0.0/22 Known via "isis 1", distance 115, metric 10 (summary), type manual summary Installed Sep 12 02:04:19.948 for 00:04:34 Routing Descriptor Blocks directly connected, via Null0 Route metric is 10 No advertising protos. RP/0/RP0/CPU0:R2#show isis Sat Sep 12 02:08:54.897 UTC IS-IS Router: 1 System Id: 0020.0200.2002 Hostname: R2 IS Levels: level-1-2 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: 4173 Respawn count: 1 Started: Sat 2026 Sep 12 01:30:08.917 UTC Null0 ready: Sat 2026 Sep 12 01:30:10.311 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: 15420171/2147483648 0% Memory usage specifics (count/bytes): Nodes: 6/2448 LSPs: 6/2519 Links: 8/9792 Prefixes: 38/33232 Nets: 14/9632 Paths: 26/2496 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: Sat 2026 Sep 12 01:30:11.210 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): Wide/Wide Metric: 10 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) GigabitEthernet0/0/0/1 is running actively (active in configuration) RP/0/RP0/CPU0:R2#show isis hostname Sat Sep 12 02:08:55.036 UTC IS-IS 1 hostnames Level System ID Dynamic Hostname 1 0010.0100.1001 R1 1,2 * 0020.0200.2002 R2 1,2 0030.0300.3003 R3 2 0040.0400.4004 R4 RP/0/RP0/CPU0:R2#show isis interface brief Sat Sep 12 02:08:55.201 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 0 1/1 1/1 Up 1497 - - Gi0/0/0/1 Yes 0 1 1/1 1/1 Up 1497 - - RP/0/RP0/CPU0:R2#show isis neighbors Sat Sep 12 02:08:55.351 UTC IS-IS 1 neighbors: System Id Interface SNPA State Holdtime Type IETF-NSF R1 Gi0/0/0/0 *PtoP* Up 22 L1 Capable R4 Gi0/0/0/1 *PtoP* Up 24 L2 Capable Total neighbor count: 2 RP/0/RP0/CPU0:R2#show isis database Sat Sep 12 02:08:55.501 UTC IS-IS 1 (Level-1) Link State Database LSPID LSP Seq Num LSP Checksum LSP Holdtime/Rcvd ATT/P/OL R1.00-00 0x00000009 0x198e 1080 /1200 0/0/0 R2.00-00 * 0x00000008 0x9a65 896 /* 1/0/0 R3.00-00 0x00000008 0x724c 907 /1200 1/0/0 Total Level-1 LSP count: 3 Local Level-1 LSP count: 1 IS-IS 1 (Level-2) Link State Database LSPID LSP Seq Num LSP Checksum LSP Holdtime/Rcvd ATT/P/OL R2.00-00 * 0x0000000b 0x2aa0 924 /* 0/0/0 R3.00-00 0x0000000a 0xe0b2 1080 /1200 0/0/0 R4.00-00 0x00000008 0xb25c 727 /1200 0/0/0 Total Level-2 LSP count: 3 Local Level-2 LSP count: 1 RP/0/RP0/CPU0:R2#show isis database detail Sat Sep 12 02:08:55.664 UTC IS-IS 1 (Level-1) Link State Database LSPID LSP Seq Num LSP Checksum LSP Holdtime/Rcvd ATT/P/OL R1.00-00 0x00000009 0x198e 1080 /1200 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: 20 IS-Extended R3.00 Metric: 0 IP-Extended 1.1.1.1/32 Metric: 10 IP-Extended 10.1.2.0/24 Metric: 20 IP-Extended 10.1.3.0/24 Metric: 50 IP-Extended 172.16.0.0/24 Metric: 0 IP-Extended 172.16.1.0/24 Metric: 0 IP-Extended 172.16.2.0/24 Metric: 0 IP-Extended 172.16.3.0/24 R2.00-00 * 0x00000008 0x9a65 896 /* 1/0/0 Area Address: 49.0001 LSP MTU: 1492 NLPID: 0xcc IP Address: 2.2.2.2 Hostname: R2 Metric: 10 IS-Extended R1.00 Metric: 0 IP-Extended 2.2.2.2/32 Metric: 10 IP-Extended 10.1.2.0/24 Metric: 10 IP-Extended 10.2.4.0/24 R3.00-00 0x00000008 0x724c 907 /1200 1/0/0 Area Address: 49.0001 LSP MTU: 1492 NLPID: 0xcc IP Address: 3.3.3.3 Hostname: R3 Metric: 20 IS-Extended R1.00 Metric: 0 IP-Extended 3.3.3.3/32 Metric: 20 IP-Extended 10.1.3.0/24 Metric: 10 IP-Extended 10.3.4.0/24 Total Level-1 LSP count: 3 Local Level-1 LSP count: 1 IS-IS 1 (Level-2) Link State Database LSPID LSP Seq Num LSP Checksum LSP Holdtime/Rcvd ATT/P/OL R2.00-00 * 0x0000000b 0x2aa0 924 /* 0/0/0 Area Address: 49.0001 LSP MTU: 1492 NLPID: 0xcc IP Address: 2.2.2.2 Hostname: R2 Metric: 10 IS-Extended R4.00 Metric: 10 IP-Extended 1.1.1.1/32 Metric: 0 IP-Extended 2.2.2.2/32 Metric: 30 IP-Extended 3.3.3.3/32 Metric: 10 IP-Extended 10.1.2.0/24 Metric: 30 IP-Extended 10.1.3.0/24 Metric: 10 IP-Extended 10.2.4.0/24 Metric: 40 IP-Extended 10.3.4.0/24 Metric: 10 IP-Extended 172.16.0.0/22 R3.00-00 0x0000000a 0xe0b2 1080 /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 R4.00 Metric: 20 IP-Extended 1.1.1.1/32 Metric: 30 IP-Extended 2.2.2.2/32 Metric: 0 IP-Extended 3.3.3.3/32 Metric: 30 IP-Extended 10.1.2.0/24 Metric: 20 IP-Extended 10.1.3.0/24 Metric: 40 IP-Extended 10.2.4.0/24 Metric: 10 IP-Extended 10.3.4.0/24 Metric: 70 IP-Extended 172.16.0.0/24 Metric: 20 IP-Extended 172.16.1.0/24 Metric: 20 IP-Extended 172.16.2.0/24 Metric: 20 IP-Extended 172.16.3.0/24 R4.00-00 0x00000008 0xb25c 727 /1200 0/0/0 Area Address: 49.0002 LSP MTU: 1492 NLPID: 0xcc IP Address: 4.4.4.4 Hostname: R4 Metric: 10 IS-Extended R2.00 Metric: 10 IS-Extended R3.00 Metric: 0 IP-Extended 4.4.4.4/32 Metric: 10 IP-Extended 10.2.4.0/24 Metric: 10 IP-Extended 10.3.4.0/24 Total Level-2 LSP count: 3 Local Level-2 LSP count: 1 RP/0/RP0/CPU0:R2#show isis topology Sat Sep 12 02:08:55.811 UTC IS-IS 1 paths to IPv4 Unicast (Level-1) routers System Id Metric Next-Hop Interface SNPA R1 10 R1 Gi0/0/0/0 *PtoP* R2 -- R3 30 R1 Gi0/0/0/0 *PtoP* IS-IS 1 paths to IPv4 Unicast (Level-2) routers System Id Metric Next-Hop Interface SNPA R2 -- R3 20 R4 Gi0/0/0/1 *PtoP* R4 10 R4 Gi0/0/0/1 *PtoP* RP/0/RP0/CPU0:R2#show isis route Sat Sep 12 02:08:55.958 UTC IS-IS 1 IPv4 Unicast routes Codes: L1 - level 1, L2 - level 2, ia - interarea (leaked into level 1) df - level 1 default (closest attached router), su - summary null C - connected, S - static, R - RIP, B - BGP, O - OSPF E - EIGRP, A - access/subscriber, M - mobile, a - application i - IS-IS (redistributed from another instance) Maximum parallel path count: 8 df 0.0.0.0/0 [0/115] L1 1.1.1.1/32 [10/115] via 10.1.2.1, GigabitEthernet0/0/0/0, R1, Weight: 0 C 2.2.2.2/32 is directly connected, Loopback0 L1 3.3.3.3/32 [30/115] via 10.1.2.1, GigabitEthernet0/0/0/0, R1, Weight: 0 L2 4.4.4.4/32 [10/115] via 10.2.4.4, GigabitEthernet0/0/0/1, R4, Weight: 0 C 10.1.2.0/24 is directly connected, GigabitEthernet0/0/0/0 L1 10.1.3.0/24 [30/115] via 10.1.2.1, GigabitEthernet0/0/0/0, R1, Weight: 0 C 10.2.4.0/24 is directly connected, GigabitEthernet0/0/0/1 L1 10.3.4.0/24 [40/115] via 10.1.2.1, GigabitEthernet0/0/0/0, R1, Weight: 0 su 172.16.0.0/22 [10/115] via 0.0.0.0, Null0, R2, Weight: 0 L1 172.16.0.0/24 [60/115] via 10.1.2.1, GigabitEthernet0/0/0/0, R1, Weight: 0 L1 172.16.1.0/24 [10/115] via 10.1.2.1, GigabitEthernet0/0/0/0, R1, Weight: 0 L1 172.16.2.0/24 [10/115] via 10.1.2.1, GigabitEthernet0/0/0/0, R1, Weight: 0 L1 172.16.3.0/24 [10/115] via 10.1.2.1, GigabitEthernet0/0/0/0, R1, Weight: 0 RP/0/RP0/CPU0:R2#show isis adjacency-log Sat Sep 12 02:08:56.135 UTC IS-IS 1 Level 1 Adjacency Log Capacity: 100, Size: 2 When System Interface State Details --- Sat Sep 12 2026 --- 01:30:26.508 R1 Gi0/0/0/0 d -> i 01:30:27.116 R1 Gi0/0/0/0 i -> u New adjacency IPv4 Unicast Up IS-IS 1 Level 2 Adjacency Log Capacity: 100, Size: 2 When System Interface State Details --- Sat Sep 12 2026 --- 01:36:42.263 R4 Gi0/0/0/1 d -> i 01:36:42.873 R4 Gi0/0/0/1 i -> u New adjacency IPv4 Unicast Up RP/0/RP0/CPU0:R2#show isis spf-log Sat Sep 12 02:08:56.257 UTC IS-IS 1 Level 1 IPv4 Unicast Route Calculation Log Capacity: 210, Size: 14 Time Total Trig. Timestamp Type (ms) Nodes Count First Trigger LSP Triggers ------------ ----- ----- ----- ----- -------------------- ---------------------- --- Sat Sep 12 2026 --- 01:30:11.507 FSPF 0 0 2 CONFIG 01:30:21.397 FSPF 0 1 7 R2.00-00 CONFIG NEWNODE NEWLSP OVLSET PREFIXGOOD AREAADDR IPADDR 01:30:23.545 FSPF 0 1 1 R2.00-00 OVLCLR 01:30:26.045 PRC 0 1 1 R2.00-00 PREFIXGOOD 01:30:27.647 FSPF 0 2 5 R1.00-00 NEWNODE NEWLSP PREFIXGOOD AREAADDR IPADDR 01:30:30.848 FSPF 0 2 1 R2.00-00 LINKGOOD 01:30:58.541 FSPF 2 2 1 R1.00-00 LINKGOOD 01:33:31.524 FSPF 0 3 6 R3.00-00 NEWNODE NEWLSP LINKGOOD PREFIXGOOD AREAADDR IPADDR 01:34:01.895 FSPF 2 3 1 R1.00-00 LINKGOOD 01:36:46.796 PRC 0 3 1 R2.00-00 ATTSET 01:36:47.245 PRC 0 3 1 R3.00-00 ATTSET 01:49:01.948 FSPF 0 3 1 PERIODIC 02:04:02.001 FSPF 0 3 1 PERIODIC 02:06:56.053 PRC 1 3 1 R1.00-00 PREFIXBAD IS-IS 1 Level 2 IPv4 Unicast Route Calculation Log Capacity: 210, Size: 13 Time Total Trig. Timestamp Type (ms) Nodes Count First Trigger LSP Triggers ------------ ----- ----- ----- ----- -------------------- ---------------------- --- Sat Sep 12 2026 --- 01:30:11.506 FSPF 0 0 2 CONFIG 01:30:21.399 FSPF 0 1 7 R2.00-00 CONFIG NEWNODE NEWLSP OVLSET PREFIXGOOD AREAADDR IPADDR 01:30:23.544 FSPF 0 1 1 R2.00-00 OVLCLR 01:30:26.045 PRC 0 1 1 R2.00-00 PREFIXGOOD 01:30:58.644 PRC 0 1 1 R2.00-00 PREFIXGOOD 01:34:01.999 PRC 0 1 1 R2.00-00 PREFIXGOOD 01:36:44.232 FSPF 0 3 11 R3.00-00 NEWNODE NEWLSP LINKGOOD PREFIXGOOD AREAADDR IPADDR 01:36:46.679 FSPF 16 3 2 R2.00-00 LINKGOOD 01:36:47.095 FSPF 1 3 1 R4.00-00 LINKGOOD 01:51:47.148 FSPF 0 3 1 PERIODIC 02:04:19.946 PRC 2 3 1 R2.00-00 PREFIXBAD 02:06:47.199 FSPF 0 3 1 PERIODIC 02:06:56.163 PRC 0 3 1 R3.00-00 PREFIXBAD RP/0/RP0/CPU0:R2#show isis lsp-log Sat Sep 12 02:08:56.394 UTC IS-IS 1 Level 1 LSP Generation Log Capacity: 50, Size: 6 When Count Interface Triggers --- Sat Sep 12 2026 --- 01:30:11.594 1 CONFIG 01:30:20.294 1 Lo0 IPUP 01:30:23.414 1 LSPDBOL 01:30:25.994 1 Gi0/0/0/0 IPUP 01:30:29.991 1 Gi0/0/0/0 SABIT 01:36:46.745 1 ATTACHFLAG IS-IS 1 Level 2 LSP Generation Log Capacity: 50, Size: 9 When Count Interface Triggers --- Sat Sep 12 2026 --- 01:30:11.594 1 CONFIG 01:30:20.294 1 Lo0 IPUP 01:30:23.414 1 LSPDBOL 01:30:25.956 1 Gi0/0/0/0 IPUP 01:30:58.594 1 IPIA 01:34:01.948 1 IPIA 01:36:46.628 1 Gi0/0/0/1 SABIT 02:04:19.895 1 CONFIG 02:06:56.105 2 IPIA RP/0/RP0/CPU0:R2#show isis statistics Sat Sep 12 02:08:56.639 UTC IS-IS 1 Packet and Event Statistics Dropped Dropped Total PDUs Sent Received On Input By Update Hello: 534 490 0 - CSNP: 2 2 - 0 PSNP: 18 10 0 0 LSP: 10 19 0 0 LSP Retransmissions: 0 LSP Checksum Errors: 0 IS-IS Update Queue: 0/3500 Total Traffic: 31 High Water Mark: 2 HWM Set: Sat 2026 Sep 12 01:36:44.181 UTC Total Drops: 0 IS-IS Input Queue: 0/4200 Total Traffic: 521 High Water Mark: 2 Total Drops: 0 Level-1 LSPs sourced (new/refresh): 8/2 Route Calculations IPv4 Unicast Total: 14 Full SPF Calculations: 10 Periodic: 2 Partial Route Calc: 4 Next Hop Calculations: 0 Level-2 LSPs sourced (new/refresh): 11/2 Route Calculations IPv4 Unicast Total: 13 Full SPF Calculations: 8 Periodic: 2 Partial Route Calc: 5 Next Hop Calculations: 0