RP/0/RP0/CPU0:R3#show version Thu Sep 10 00:43:11.587 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 R3 uptime is 30 minutes XRd Control Plane Container RP/0/RP0/CPU0:R3#show interface description Thu Sep 10 00:43:11.750 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 (10.2.3.0/24) Gi0/0/0/1 admin-down admin-down Gi0/0/0/2 admin-down admin-down RP/0/RP0/CPU0:R3#show route Thu Sep 10 00:43:11.911 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 [115/20] via 10.2.3.2, 00:03:16, GigabitEthernet0/0/0/0 i L2 2.2.2.2/32 [115/10] via 10.2.3.2, 00:03:16, GigabitEthernet0/0/0/0 L 3.3.3.3/32 is directly connected, 00:28:12, Loopback0 i L2 10.1.2.0/24 [115/20] via 10.2.3.2, 00:03:16, GigabitEthernet0/0/0/0 C 10.2.3.0/24 is directly connected, 00:03:17, GigabitEthernet0/0/0/0 L 10.2.3.3/32 is directly connected, 00:03:17, GigabitEthernet0/0/0/0 RP/0/RP0/CPU0:R3#show route isis Thu Sep 10 00:43:12.196 UTC i L2 1.1.1.1/32 [115/20] via 10.2.3.2, 00:03:16, GigabitEthernet0/0/0/0 i L2 2.2.2.2/32 [115/10] via 10.2.3.2, 00:03:16, GigabitEthernet0/0/0/0 i L2 10.1.2.0/24 [115/20] via 10.2.3.2, 00:03:16, GigabitEthernet0/0/0/0 RP/0/RP0/CPU0:R3#show isis Thu Sep 10 00:43:12.407 UTC IS-IS Router: 1 System Id: 0030.0300.3003 Hostname: R3 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: 4243 Respawn count: 1 Started: Thu 2026 Sep 10 00:14:50.852 UTC Null0 ready: Thu 2026 Sep 10 00:14:52.154 UTC Protocol shutdown: No System memory state: Normal Last change: never Memory state: Normal Last change: never Last/Initial memory usage/limit: 1595087/2147483648 0% Memory state monitoring interval: 60 s Memory usage/limit: 13826098/2147483648 0% Memory usage specifics (count/bytes): Nodes: 3/1224 LSPs: 3/1256 Links: 4/4896 Prefixes: 7/2408 Nets: 5/3056 Paths: 8/768 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 00:14:53.053 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): 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:R3#show isis hostname Thu Sep 10 00:43:12.540 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 RP/0/RP0/CPU0:R3#show isis interface Thu Sep 10 00:43:12.629 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: 3.3.3.3/32 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: 5 Last IIH Received: 00:43:08 (4.65 sec ago), 1497 octets Last IIH Sent: 00:43:05 (7.63 sec ago), 1497 octets Sending next P2P IIH in: 2 s IPv4 BFD: Disabled IPv6 BFD: Disabled Level-2 Adjacency Count: 1 Adjacency Flaps: 3 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: 5254.0032.e257 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: 10.2.3.3 Global Prefix: 10.2.3.0/24 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: 00:39:55.792 Received CSNP complete: 00:39:56.884 LSP Pacing Start: 00:39:56.792 LSP fast flooding: Disabled PME Link Delays and Loss: - RP/0/RP0/CPU0:R3#show isis interface brief Thu Sep 10 00:43:12.767 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:R3#show isis neighbors Thu Sep 10 00:43:12.905 UTC IS-IS 1 neighbors: System Id Interface SNPA State Holdtime Type IETF-NSF R2 Gi0/0/0/0 *PtoP* Up 25 L2 Capable Total neighbor count: 1 RP/0/RP0/CPU0:R3#show isis neighbors detail Thu Sep 10 00:43:13.060 UTC IS-IS 1 neighbors: System Id Interface SNPA State Holdtime Type IETF-NSF R2 Gi0/0/0/0 *PtoP* Up 24 L2 Capable Area Address(es): 49.0001 IPv4 Address(es): 10.2.3.2* Topologies: 'IPv4 Unicast' Uptime: 00:03:17 Total neighbor count: 1 RP/0/RP0/CPU0:R3#show isis database Thu Sep 10 00:43:13.256 UTC IS-IS 1 (Level-2) Link State Database LSPID LSP Seq Num LSP Checksum LSP Holdtime/Rcvd ATT/P/OL R1.00-00 0x00000022 0xf408 1015 /1200 0/0/0 R2.00-00 0x00000022 0xa7a8 1037 /1200 0/0/0 R3.00-00 * 0x00000023 0x4d56 1002 /* 0/0/0 Total Level-2 LSP count: 3 Local Level-2 LSP count: 1 RP/0/RP0/CPU0:R3#show isis database detail Thu Sep 10 00:43:13.403 UTC IS-IS 1 (Level-2) Link State Database LSPID LSP Seq Num LSP Checksum LSP Holdtime/Rcvd ATT/P/OL R1.00-00 0x00000022 0xf408 1015 /1200 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 0x00000022 0xa7a8 1037 /1200 0/0/0 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 IP 10.2.3.0/24 Metric: 10 IS R1.00 Metric: 10 IS R3.00 R3.00-00 * 0x00000023 0x4d56 1002 /* 0/0/0 Area Address: 49.0001 LSP MTU: 1492 NLPID: 0xcc IP Address: 3.3.3.3 Hostname: R3 Metric: 0 IP 3.3.3.3/32 Metric: 10 IP 10.2.3.0/24 Metric: 10 IS R2.00 Total Level-2 LSP count: 3 Local Level-2 LSP count: 1 RP/0/RP0/CPU0:R3#show isis topology Thu Sep 10 00:43:13.524 UTC IS-IS 1 paths to IPv4 Unicast (Level-2) routers System Id Metric Next-Hop Interface SNPA R1 20 R2 Gi0/0/0/0 *PtoP* R2 10 R2 Gi0/0/0/0 *PtoP* R3 -- RP/0/RP0/CPU0:R3#show isis adjacency Thu Sep 10 00:43:13.642 UTC IS-IS 1 Level-2 adjacencies: System Id Interface SNPA State Hold Changed NSF IPv4 IPv6 BFD BFD R2 Gi0/0/0/0 *PtoP* Up 24 00:03:17 Yes None None Total adjacency count: 1 RP/0/RP0/CPU0:R3#show isis adjacency-log Thu Sep 10 00:43:13.806 UTC IS-IS 1 Level 2 Adjacency Log Capacity: 100, Size: 10 When System Interface State Details --- Thu Sep 10 2026 --- 00:15:03.251 R2 Gi0/0/0/0 d -> i 00:15:12.950 R2 Gi0/0/0/0 i -> u New adjacency IPv4 Unicast Up 00:17:39.868 R2 Gi0/0/0/0 u -> d Holdtime expired IPv4 Unicast Down 00:17:40.658 R2 Gi0/0/0/0 d -> i 00:17:57.972 R2 Gi0/0/0/0 i -> u New adjacency IPv4 Unicast Up 00:31:14.175 R2 Gi0/0/0/0 u -> i 3-way state down IPv4 Unicast Down 00:31:14.636 R2 Gi0/0/0/0 i -> u Restarted IPv4 Unicast Up 00:36:57.793 R2 Gi0/0/0/0 u -> d Interface state down IPv4 Unicast Down 00:39:55.183 R2 Gi0/0/0/0 d -> i 00:39:55.792 R2 Gi0/0/0/0 i -> u New adjacency IPv4 Unicast Up RP/0/RP0/CPU0:R3#show isis spf-log Thu Sep 10 00:43:13.922 UTC IS-IS 1 Level 2 IPv4 Unicast Route Calculation Log Capacity: 210, Size: 23 Time Total Trig. Timestamp Type (ms) Nodes Count First Trigger LSP Triggers ------------ ----- ----- ----- ----- -------------------- ---------------------- --- Thu Sep 10 2026 --- 00:15:04.069 FSPF 0 1 7 R3.00-00 CONFIG NEWNODE NEWLSP OVLSET PREFIXGOOD AREAADDR IPADDR 00:15:06.135 FSPF 0 1 1 R3.00-00 OVLCLR 00:15:13.051 FSPF 0 2 1 R3.00-00 LINKGOOD 00:15:30.831 FSPF 0 3 11 R1.00-00 NEWNODE NEWLSP LINKGOOD PREFIXGOOD AREAADDR IPADDR 00:15:50.410 FSPF 3 3 1 R2.00-00 LINKGOOD 00:17:39.969 FSPF 2 3 2 R3.00-00 DELADJ LINKBAD 00:17:58.101 FSPF 49 3 1 R3.00-00 LINKGOOD 00:18:08.224 FSPF 2 3 1 R2.00-00 LINKGOOD 00:27:44.552 FSPF 3 3 3 R2.00-00 NEWLSP PREFIXGOOD 00:27:44.756 FSPF 2 3 3 R2.00-01 NEWLSP PREFIXGOOD 00:31:14.287 FSPF 3 3 2 R3.00-00 DELADJ LINKBAD 00:31:15.999 FSPF 0 3 7 R1.00-00 OVLSET LINKGOOD LINKBAD PREFIXGOOD PREFIXBAD 00:31:17.795 FSPF 4 3 2 R3.00-00 LINKGOOD 00:31:18.963 FSPF 1 3 1 R2.00-00 OVLCLR 00:36:57.946 FSPF 2 3 3 R3.00-00 DELADJ LINKBAD PREFIXBAD 00:38:19.275 FSPF 0 3 3 R2.00-02 LSPEXPIRY LINKBAD PREFIXBAD 00:38:25.512 FSPF 0 3 5 R2.00-00 DELNODE LSPEXPIRY PREFIXBAD AREAADDR IPADDR 00:38:41.864 FSPF 0 3 2 R2.00-01 LSPEXPIRY PREFIXBAD 00:38:43.846 FSPF 0 3 6 R1.00-00 DELNODE LSPEXPIRY LINKBAD PREFIXBAD AREAADDR IPADDR 00:39:54.686 PRC 0 1 1 R3.00-00 PREFIXGOOD 00:39:55.853 FSPF 4 3 17 R1.00-00 NEWNODE NEWLSP LINKGOOD PREFIXGOOD AREAADDR IPADDR 00:40:27.153 FSPF 2 3 4 R2.00-00 LSPEXPIRY PREFIXBAD 00:40:30.782 FSPF 0 3 3 R2.00-00 LSPEXPIRY LINKGOOD LINKBAD RP/0/RP0/CPU0:R3#show isis lsp-log Thu Sep 10 00:43:14.159 UTC IS-IS 1 Level 2 LSP Generation Log Capacity: 50, Size: 15 When Count Interface Triggers --- Thu Sep 10 2026 --- 00:14:53.355 1 CONFIG 00:14:55.367 1 CONFIG 00:14:59.928 1 Lo0 IPUP 00:15:03.048 1 Gi0/0/0/0 IPUP 00:15:06.084 1 LSPDBOL 00:15:13.000 1 Gi0/0/0/0 NEWADJ 00:17:39.918 2 Gi0/0/0/0 DELADJ BESTADJ 00:17:58.022 1 Gi0/0/0/0 NEWADJ 00:20:37.158 1 CONFIG 00:27:11.511 1 CONFIG 00:31:14.236 1 Gi0/0/0/0 SABIT 00:31:17.744 1 Gi0/0/0/0 SABIT 00:36:57.847 2 Gi0/0/0/0 DELADJ BESTADJ 00:39:54.635 1 Gi0/0/0/0 IPUP 00:39:55.843 2 Gi0/0/0/0 NEWADJ CONFIG RP/0/RP0/CPU0:R3#show isis statistics Thu Sep 10 00:43:14.460 UTC IS-IS 1 Packet and Event Statistics Dropped Dropped Total PDUs Sent Received On Input By Update Hello: 178 158 0 - CSNP: 4 3 - 0 PSNP: 76 24 0 0 LSP: 37 95 0 0 LSP Retransmissions: 10 LSP Checksum Errors: 0 Initiated LSP Purges: 4 Initiated Other LSP Purges: 4 Last Other Purged LSP: R1.00-00 (L2) Last Occurrence: Thu 2026 Sep 10 00:38:43.795 UTC IS-IS Update Queue: 0/3500 Total Traffic: 122 High Water Mark: 4 HWM Set: Thu 2026 Sep 10 00:31:15.947 UTC Total Drops: 0 IS-IS Input Queue: 0/4200 Total Traffic: 280 High Water Mark: 4 Total Drops: 0 Level-2 LSPs sourced (new/refresh): 17/20 Route Calculations IPv4 Unicast Total: 23 Full SPF Calculations: 22 Periodic: 0 Partial Route Calc: 1 Next Hop Calculations: 0 RP/0/RP0/CPU0:R3#show cef Thu Sep 10 00:43:14.629 UTC Prefix Next Hop Interface ------------------- ------------------- ------------------ 0.0.0.0/0 drop default handler 0.0.0.0/32 broadcast 1.1.1.1/32 10.2.3.2/32 GigabitEthernet0/0/0/0 2.2.2.2/32 10.2.3.2/32 GigabitEthernet0/0/0/0 3.3.3.3/32 receive Loopback0 10.1.2.0/24 10.2.3.2/32 GigabitEthernet0/0/0/0 10.2.3.0/24 attached GigabitEthernet0/0/0/0 10.2.3.0/32 broadcast GigabitEthernet0/0/0/0 10.2.3.2/32 10.2.3.2/32 GigabitEthernet0/0/0/0 10.2.3.3/32 receive GigabitEthernet0/0/0/0 10.2.3.255/32 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