RP/0/RP0/CPU0:R2#show version Thu Sep 10 14:15:46.274 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 45 minutes XRd Control Plane Container RP/0/RP0/CPU0:R2#show interface description Thu Sep 10 14:15:46.381 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 LAN (10.1.0.0/24) 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 Thu Sep 10 14:15:46.549 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 L2 1.1.1.1/32 [115/10] via 10.1.0.1, 00:13:02, GigabitEthernet0/0/0/0 L 2.2.2.2/32 is directly connected, 00:43:08, Loopback0 i L2 3.3.3.3/32 [115/10] via 10.1.0.3, 00:12:50, GigabitEthernet0/0/0/0 i L2 4.4.4.4/32 [115/10] via 10.2.4.4, 00:08:34, GigabitEthernet0/0/0/1 C 10.1.0.0/24 is directly connected, 00:43:04, GigabitEthernet0/0/0/0 L 10.1.0.2/32 is directly connected, 00:43:04, GigabitEthernet0/0/0/0 C 10.2.4.0/24 is directly connected, 00:43:04, GigabitEthernet0/0/0/1 L 10.2.4.2/32 is directly connected, 00:43:04, GigabitEthernet0/0/0/1 i L2 10.3.4.0/24 [115/20] via 10.1.0.3, 00:08:34, GigabitEthernet0/0/0/0 [115/20] via 10.2.4.4, 00:08:34, GigabitEthernet0/0/0/1 RP/0/RP0/CPU0:R2#show route isis Thu Sep 10 14:15:46.779 UTC i L2 1.1.1.1/32 [115/10] via 10.1.0.1, 00:13:02, GigabitEthernet0/0/0/0 i L2 3.3.3.3/32 [115/10] via 10.1.0.3, 00:12:50, GigabitEthernet0/0/0/0 i L2 4.4.4.4/32 [115/10] via 10.2.4.4, 00:08:35, GigabitEthernet0/0/0/1 i L2 10.3.4.0/24 [115/20] via 10.1.0.3, 00:08:35, GigabitEthernet0/0/0/0 [115/20] via 10.2.4.4, 00:08:35, GigabitEthernet0/0/0/1 RP/0/RP0/CPU0:R2#show isis Thu Sep 10 14:15:47.033 UTC IS-IS Router: 1 System Id: 0020.0200.2002 Hostname: R2 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: 4353 Respawn count: 1 Started: Thu 2026 Sep 10 13:32:28.301 UTC Null0 ready: Thu 2026 Sep 10 13:32:29.772 UTC Protocol shutdown: No System memory state: Normal Last change: never Memory state: Normal Last change: never Last/Initial memory usage/limit: 1596380/2147483648 0% Memory state monitoring interval: 60 s Memory usage/limit: 13863478/2147483648 0% Memory usage specifics (count/bytes): Nodes: 5/2040 LSPs: 5/2090 Links: 10/12240 Prefixes: 11/10120 Nets: 7/4432 Paths: 16/1536 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: Thu 2026 Sep 10 13:32:30.589 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) GigabitEthernet0/0/0/1 is running actively (active in configuration) RP/0/RP0/CPU0:R2#show isis hostname Thu Sep 10 14:15:47.182 UTC IS-IS 1 hostnames Level System ID Dynamic Hostname 2 0010.0100.1001 R1 2 * 0020.0200.2002 R2 2 0030.0300.3003 R3 2 0040.0400.4004 R4 RP/0/RP0/CPU0:R2#show isis interface brief Thu Sep 10 14:15:47.365 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 - 2* 1/1 1/1 Up 1497 - 64 Gi0/0/0/1 Yes - 1 1/1 1/1 Up 1497 - - RP/0/RP0/CPU0:R2#show isis neighbors Thu Sep 10 14:15:47.461 UTC IS-IS 1 neighbors: System Id Interface SNPA State Holdtime Type IETF-NSF R1 Gi0/0/0/0 5254.00a6.5d45 Up 20 L2 Capable R3 Gi0/0/0/0 5254.0063.11aa Up 29 L2 Capable R4 Gi0/0/0/1 *PtoP* Up 22 L2 Capable Total neighbor count: 3 RP/0/RP0/CPU0:R2#show isis database Thu Sep 10 14:15:47.617 UTC IS-IS 1 (Level-2) Link State Database LSPID LSP Seq Num LSP Checksum LSP Holdtime/Rcvd ATT/P/OL R1.00-00 0x0000000a 0x6036 1128 /1200 0/0/0 R2.00-00 * 0x0000000f 0xa79a 683 /* 0/0/0 R2.01-00 0x00000008 0x4764 416 /* 0/0/0 R3.00-00 0x00000009 0xea31 428 /1200 0/0/0 R4.00-00 0x00000009 0xa965 439 /1200 0/0/0 Total Level-2 LSP count: 5 Local Level-2 LSP count: 1 RP/0/RP0/CPU0:R2#show isis database detail Thu Sep 10 14:15:47.787 UTC IS-IS 1 (Level-2) Link State Database LSPID LSP Seq Num LSP Checksum LSP Holdtime/Rcvd ATT/P/OL R1.00-00 0x0000000a 0x6036 1128 /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 R2.01 Metric: 0 IP-Extended 1.1.1.1/32 Metric: 10 IP-Extended 10.1.0.0/24 R2.00-00 * 0x0000000f 0xa79a 683 /* 0/0/0 Area Address: 49.0001 LSP MTU: 1492 NLPID: 0xcc IP Address: 2.2.2.2 Hostname: R2 Metric: 10 IS-Extended R2.01 Metric: 10 IS-Extended R4.00 Metric: 0 IP-Extended 2.2.2.2/32 Metric: 10 IP-Extended 10.1.0.0/24 Metric: 10 IP-Extended 10.2.4.0/24 R2.01-00 0x00000008 0x4764 416 /* 0/0/0 Metric: 0 IS-Extended R3.00 Metric: 0 IS-Extended R1.00 Metric: 0 IS-Extended R2.00 R3.00-00 0x00000009 0xea31 428 /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 R2.01 Metric: 10 IS-Extended R4.00 Metric: 0 IP-Extended 3.3.3.3/32 Metric: 10 IP-Extended 10.1.0.0/24 Metric: 10 IP-Extended 10.3.4.0/24 R4.00-00 0x00000009 0xa965 439 /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 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: 5 Local Level-2 LSP count: 1 RP/0/RP0/CPU0:R2#show isis topology Thu Sep 10 14:15:47.894 UTC IS-IS 1 paths to IPv4 Unicast (Level-2) routers System Id Metric Next-Hop Interface SNPA R1 10 R1 Gi0/0/0/0 5254.00a6.5d45 R2 -- R3 10 R3 Gi0/0/0/0 5254.0063.11aa R4 10 R4 Gi0/0/0/1 *PtoP* RP/0/RP0/CPU0:R2#show isis route Thu Sep 10 14:15:48.083 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 L2 1.1.1.1/32 [10/115] via 10.1.0.1, GigabitEthernet0/0/0/0, R1, Weight: 0 C 2.2.2.2/32 is directly connected, Loopback0 L2 3.3.3.3/32 [10/115] via 10.1.0.3, GigabitEthernet0/0/0/0, R3, Weight: 0 L2 4.4.4.4/32 [10/115] via 10.2.4.4, GigabitEthernet0/0/0/1, R4, Weight: 0 C 10.1.0.0/24 is directly connected, GigabitEthernet0/0/0/0 C 10.2.4.0/24 is directly connected, GigabitEthernet0/0/0/1 L2 10.3.4.0/24 [20/115] via 10.1.0.3, GigabitEthernet0/0/0/0, R3, Weight: 0 via 10.2.4.4, GigabitEthernet0/0/0/1, R4, Weight: 0 RP/0/RP0/CPU0:R2#show isis adjacency-log Thu Sep 10 14:15:48.271 UTC IS-IS 1 Level 2 Adjacency Log Capacity: 100, Size: 6 When System Interface State Details --- Thu Sep 10 2026 --- 13:32:42.286 R1 Gi0/0/0/0 d -> i 13:32:43.286 R1 Gi0/0/0/0 i -> u New adjacency IPv4 Unicast Up 13:33:35.911 R3 Gi0/0/0/0 d -> i 13:33:38.904 R3 Gi0/0/0/0 i -> u New adjacency IPv4 Unicast Up 13:34:39.974 R4 Gi0/0/0/1 d -> i 13:34:40.584 R4 Gi0/0/0/1 i -> u New adjacency IPv4 Unicast Up RP/0/RP0/CPU0:R2#show isis spf-log Thu Sep 10 14:15:48.384 UTC IS-IS 1 Level 2 IPv4 Unicast Route Calculation Log Capacity: 210, Size: 24 Time Total Trig. Timestamp Type (ms) Nodes Count First Trigger LSP Triggers ------------ ----- ----- ----- ----- -------------------- ---------------------- --- Thu Sep 10 2026 --- 13:32:40.682 FSPF 0 1 7 R2.00-00 CONFIG NEWNODE NEWLSP OVLSET PREFIXGOOD AREAADDR IPADDR 13:32:42.320 FSPF 0 1 2 R2.00-00 OVLCLR PREFIXGOOD 13:32:45.279 FSPF 0 3 3 R2.01-00 NEWNODE NEWLSP LINKGOOD 13:32:53.161 FSPF 0 3 5 R1.00-00 NEWNODE NEWLSP PREFIXGOOD AREAADDR IPADDR 13:32:55.215 FSPF 0 3 2 R2.01-00 LINKGOOD 13:32:58.416 FSPF 2 3 1 R1.00-00 LINKGOOD 13:33:39.049 FSPF 0 4 6 R3.00-00 NEWNODE NEWLSP LINKGOOD PREFIXGOOD AREAADDR IPADDR 13:33:40.008 FSPF 2 4 1 R2.01-00 LINKGOOD 13:34:41.943 FSPF 0 5 5 R4.00-00 NEWNODE NEWLSP PREFIXGOOD AREAADDR IPADDR 13:34:43.069 FSPF 0 5 1 R4.00-00 LINKGOOD 13:34:44.369 FSPF 2 5 2 R2.00-00 LINKGOOD 13:37:53.095 FSPF 3 5 3 R2.00-00 CONFIG LINKBAD PREFIXBAD 13:39:03.114 FSPF 55 5 3 R2.00-00 CONFIG LINKGOOD PREFIXGOOD 13:54:03.220 FSPF 0 5 1 PERIODIC 13:56:03.287 FSPF 3 5 3 R2.00-00 CONFIG LINKBAD PREFIXBAD 13:59:26.297 FSPF 2 5 3 R2.00-00 CONFIG LINKBAD PREFIXBAD 14:02:08.597 FSPF 2 5 3 R2.00-00 CONFIG LINKGOOD PREFIXGOOD 14:02:33.062 FSPF 2 5 2 R1.00-00 LINKBAD PREFIXBAD 14:02:44.327 FSPF 0 5 26 R1.00-00 CONFIG DELNODE LSPEXPIRY LINKBAD PREFIXBAD AREAADDR IPADDR 14:02:44.527 FSPF 2 5 24 R1.00-00 CONFIG NEWNODE NEWLSP LINKGOOD PREFIXGOOD AREAADDR IPADDR 14:02:55.957 FSPF 12 5 2 R3.00-00 LINKGOOD PREFIXGOOD 14:03:07.291 FSPF 2 5 2 R4.00-00 LINKGOOD PREFIXGOOD 14:05:26.820 FSPF 1 5 3 R2.00-00 CONFIG LINKBAD PREFIXBAD 14:07:11.688 FSPF 2 5 3 R2.00-00 CONFIG LINKGOOD PREFIXGOOD RP/0/RP0/CPU0:R2#show isis lsp-log Thu Sep 10 14:15:48.521 UTC IS-IS 1 Level 2 LSP Generation Log Capacity: 50, Size: 14 When Count Interface Triggers --- Thu Sep 10 2026 --- 13:32:30.769 1 CONFIG 13:32:32.886 1 CONFIG 13:32:37.969 1 Lo0 IPUP 13:32:42.238 3 Gi0/0/0/0 LSPDBOL IPUP MSD 13:32:55.175 1 Gi0/0/0/0 SABIT 13:34:44.315 1 Gi0/0/0/1 SABIT 13:37:53.045 1 CONFIG 13:39:03.064 1 CONFIG 13:56:03.237 1 CONFIG 13:59:26.247 1 CONFIG 14:02:08.547 1 CONFIG 14:02:44.432 1 Lo0 IPDOWN 14:05:26.769 1 CONFIG 14:07:11.638 1 CONFIG IS-IS 1 Level 2 Pseudo-node 01 LSP Generation Log When Count Interface Triggers --- Thu Sep 10 2026 --- 13:32:45.227 1 Gi0/0/0/0 DIS 13:32:55.164 1 Gi0/0/0/0 SABIT 13:33:36.957 1 Gi0/0/0/0 SABIT 13:33:38.954 1 Gi0/0/0/0 NEWADJ 13:33:39.956 1 Gi0/0/0/0 SABIT 14:02:44.421 1 Gi0/0/0/0 CONFIG RP/0/RP0/CPU0:R2#show isis statistics Thu Sep 10 14:15:48.678 UTC IS-IS 1 Packet and Event Statistics Dropped Dropped Total PDUs Sent Received On Input By Update Hello: 1187 880 0 - CSNP: 296 1 - 0 PSNP: 9 22 0 0 LSP: 52 25 0 0 LSP Retransmissions: 0 LSP Checksum Errors: 0 IS-IS Update Queue: 0/3500 Total Traffic: 48 High Water Mark: 1 HWM Set: Thu 2026 Sep 10 13:32:53.110 UTC Total Drops: 0 IS-IS Input Queue: 0/4200 Total Traffic: 929 High Water Mark: 1 Total Drops: 0 Level-2 LSPs sourced (new/refresh): 22/3 Route Calculations IPv4 Unicast Total: 24 Full SPF Calculations: 24 Periodic: 1 Partial Route Calc: 0 Next Hop Calculations: 0 RP/0/RP0/CPU0:R2#show cef Thu Sep 10 14:15:48.800 UTC Prefix Next Hop Interface ------------------- ------------------- ------------------ 0.0.0.0/0 drop default handler 0.0.0.0/32 broadcast 1.1.1.1/32 10.1.0.1/32 GigabitEthernet0/0/0/0 2.2.2.2/32 receive Loopback0 3.3.3.3/32 10.1.0.3/32 GigabitEthernet0/0/0/0 4.4.4.4/32 10.2.4.4/32 GigabitEthernet0/0/0/1 10.1.0.0/24 attached GigabitEthernet0/0/0/0 10.1.0.0/32 broadcast GigabitEthernet0/0/0/0 10.1.0.1/32 10.1.0.1/32 GigabitEthernet0/0/0/0 10.1.0.2/32 receive GigabitEthernet0/0/0/0 10.1.0.3/32 10.1.0.3/32 GigabitEthernet0/0/0/0 10.1.0.255/32 broadcast GigabitEthernet0/0/0/0 10.2.4.0/24 attached GigabitEthernet0/0/0/1 10.2.4.0/32 broadcast GigabitEthernet0/0/0/1 10.2.4.2/32 receive GigabitEthernet0/0/0/1 10.2.4.4/32 10.2.4.4/32 GigabitEthernet0/0/0/1 10.2.4.255/32 broadcast GigabitEthernet0/0/0/1 10.3.4.0/24 10.1.0.3/32 GigabitEthernet0/0/0/0 10.2.4.4/32 GigabitEthernet0/0/0/1 224.0.0.0/4 0.0.0.0/32 224.0.0.0/24 receive 255.255.255.255/32 broadcast RP/0/RP0/CPU0:R2#show route summary Thu Sep 10 14:15:49.073 UTC Route Source Routes Backup Deleted Memory(bytes) connected 2 1 0 600 local 3 0 0 600 application fib_mgr 0 0 0 0 isis 1 4 2 0 1280 dagr 0 0 0 0 Total 9 3 0 2480