RP/0/RP0/CPU0:R1#show version Tue Oct 6 01:24:37.806 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 42 minutes XRd Control Plane Container RP/0/RP0/CPU0:R1#show interface description Tue Oct 6 01:24:37.996 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-SW (10.0.0.0/24 broadcast) RP/0/RP0/CPU0:R1#show route Tue Oct 6 01:24:38.246 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 10.0.0.2 to network 0.0.0.0 i*L1 0.0.0.0/0 [115/10] via 10.0.0.2, 00:22:24, GigabitEthernet0/0/0/0 [115/10] via 10.0.0.3, 00:22:24, GigabitEthernet0/0/0/0 L 1.1.1.1/32 is directly connected, 00:39:58, Loopback0 i L1 2.2.2.2/32 [115/10] via 10.0.0.2, 00:22:24, GigabitEthernet0/0/0/0 i L1 3.3.3.3/32 [115/10] via 10.0.0.3, 00:22:24, GigabitEthernet0/0/0/0 i L1 4.4.4.4/32 [115/20] via 10.0.0.3, 00:22:24, GigabitEthernet0/0/0/0 C 10.0.0.0/24 is directly connected, 00:39:54, GigabitEthernet0/0/0/0 L 10.0.0.1/32 is directly connected, 00:39:54, GigabitEthernet0/0/0/0 i L1 10.0.34.0/24 [115/20] via 10.0.0.3, 00:22:24, GigabitEthernet0/0/0/0 i L1 10.0.45.0/24 [115/30] via 10.0.0.3, 00:22:24, GigabitEthernet0/0/0/0 RP/0/RP0/CPU0:R1#show interface Tue Oct 6 01:24:38.491 UTC Loopback0 is up, line protocol is up Interface state transitions: 1 Hardware is Loopback interface(s) Internet address is 1.1.1.1/32 MTU 1500 bytes, BW 0 Kbit reliability Unknown, txload Unknown, rxload Unknown Encapsulation Loopback, loopback not set, Last link flapped 00:39:58 Last input Unknown, output Unknown Last clearing of "show interface" counters Unknown Input/output data rate is disabled. Null0 is up, line protocol is up Interface state transitions: 1 Hardware is Null interface Internet address is Unknown MTU 1500 bytes, BW 0 Kbit reliability 255/255, txload Unknown, rxload Unknown Encapsulation Null, loopback not set, Last link flapped 00:41:40 Last input never, output never Last clearing of "show interface" counters never 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 0 packets input, 0 bytes, 0 total input drops 0 drops for unrecognized upper-level protocol Received 0 broadcast packets, 0 multicast packets 0 packets output, 0 bytes, 0 total output drops Output 0 broadcast packets, 0 multicast packets MgmtEth0/RP0/CPU0/0 is up, line protocol is up Interface state transitions: 1 Hardware is Management Ethernet, address is 5254.00ab.82f7 (bia 5254.00ab.82f7) Description: management Internet address is 10.19.2.71/16 MTU 1514 bytes, BW 1000000 Kbit (Max: 1000000 Kbit) reliability 255/255, txload 0/255, rxload 0/255 Encapsulation ARPA, Duplex unknown, 1000Mb/s, unknown, link type is autonegotiation output flow control is off, input flow control is off Carrier delay (up) is 10 msec loopback not set, Last link flapped 00:39:54 ARP type ARPA, ARP timeout 04:00:00 Last input 00:00:00, output 00:00:00 Last clearing of "show interface" counters never 5 minute input rate 1000 bits/sec, 2 packets/sec 5 minute output rate 3000 bits/sec, 2 packets/sec 4087 packets input, 458876 bytes, 0 total input drops 0 drops for unrecognized upper-level protocol Received 12 broadcast packets, 22 multicast packets 0 runts, 0 giants, 0 throttles, 0 parity 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 5078 packets output, 1062574 bytes, 0 total output drops Output 1 broadcast packets, 0 multicast packets 0 output errors, 0 underruns, 0 applique, 0 resets 0 output buffer failures, 0 output buffers swapped out 1 carrier transitions GigabitEthernet0/0/0/0 is up, line protocol is up Interface state transitions: 1 Hardware is GigabitEthernet, address is 5254.004e.accf (bia 5254.004e.accf) Description: to LAN-SW (10.0.0.0/24 broadcast) Internet address is 10.0.0.1/24 MTU 1514 bytes, BW 1000000 Kbit (Max: 1000000 Kbit) reliability 255/255, txload 0/255, rxload 0/255 Encapsulation ARPA, Full-duplex, 1000Mb/s, unknown, link type is force-up output flow control is off, input flow control is off Carrier delay (up) is 10 msec loopback not set, Last link flapped 00:39:54 ARP type ARPA, ARP timeout 04:00:00 Last input 00:00:00, output 00:00:00 Last clearing of "show interface" counters 00:01:01 5 minute input rate 10000 bits/sec, 2 packets/sec 5 minute output rate 1000 bits/sec, 1 packets/sec 179 packets input, 97366 bytes, 0 total input drops 0 drops for unrecognized upper-level protocol Received 0 broadcast packets, 70 multicast packets 0 runts, 0 giants, 0 throttles, 0 parity 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 115 packets output, 22470 bytes, 0 total output drops Output 0 broadcast packets, 7 multicast packets 0 output errors, 0 underruns, 0 applique, 0 resets 0 output buffer failures, 0 output buffers swapped out 0 carrier transitions RP/0/RP0/CPU0:R1#show route summary Tue Oct 6 01:24:38.897 UTC Route Source Routes Backup Deleted Memory(bytes) connected 1 1 0 400 local 2 0 0 400 application fib_mgr 0 0 0 0 isis 1 6 1 0 1480 dagr 0 0 0 0 Total 9 2 0 2280 RP/0/RP0/CPU0:R1#show route static Tue Oct 6 01:24:39.199 UTC % No matching routes found RP/0/RP0/CPU0:R1#show cef Tue Oct 6 01:24:39.404 UTC Prefix Next Hop Interface ------------------- ------------------- ------------------ 0.0.0.0/0 10.0.0.2/32 GigabitEthernet0/0/0/0 10.0.0.3/32 GigabitEthernet0/0/0/0 0.0.0.0/32 broadcast 1.1.1.1/32 receive Loopback0 2.2.2.2/32 10.0.0.2/32 GigabitEthernet0/0/0/0 3.3.3.3/32 10.0.0.3/32 GigabitEthernet0/0/0/0 4.4.4.4/32 10.0.0.3/32 GigabitEthernet0/0/0/0 10.0.0.0/24 attached GigabitEthernet0/0/0/0 10.0.0.0/32 broadcast GigabitEthernet0/0/0/0 10.0.0.1/32 receive GigabitEthernet0/0/0/0 10.0.0.2/32 10.0.0.2/32 GigabitEthernet0/0/0/0 10.0.0.3/32 10.0.0.3/32 GigabitEthernet0/0/0/0 10.0.0.255/32 broadcast GigabitEthernet0/0/0/0 10.0.34.0/24 10.0.0.3/32 GigabitEthernet0/0/0/0 10.0.45.0/24 10.0.0.3/32 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 RP/0/RP0/CPU0:R1#show arp Tue Oct 6 01:24:39.742 UTC ------------------------------------------------------------------------------- 0/RP0/CPU0 ------------------------------------------------------------------------------- Address Age Hardware Addr State Type Interface 10.0.0.1 - 5254.004e.accf Interface ARPA GigabitEthernet0/0/0/0 10.0.0.2 00:39:40 5254.006d.5fdf Dynamic ARPA GigabitEthernet0/0/0/0 10.0.0.3 00:39:39 5254.00fd.7064 Dynamic ARPA GigabitEthernet0/0/0/0 RP/0/RP0/CPU0:R1#show configuration commit list Tue Oct 6 01:24:39.915 UTC SNo. Label/ID User Line Client Time Stamp ~~~~ ~~~~~~~~ ~~~~ ~~~~ ~~~~~~ ~~~~~~~~~~ 1 1000000004 cisco vty0:node0_RP0_CPU CLI Tue Oct 6 01:17:29 2026 2 1000000003 cisco vty0:node0_RP0_CPU CLI Tue Oct 6 01:12:28 2026 3 1000000002 cisco vty0:node0_RP0_CPU CLI Tue Oct 6 00:30:06 2026 4 1000000001 cisco vty0:node0_RP0_CPU CLI Tue Oct 6 00:25:06 2026 RP/0/RP0/CPU0:R1#show isis Tue Oct 6 01:24:40.138 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: 8023 Respawn count: 3 Started: Tue 2026 Oct 06 01:02:03.125 UTC Null0 ready: Tue 2026 Oct 06 01:02:03.600 UTC Protocol shutdown: No System memory state: Normal Last change: never Memory state: Normal Last change: never Last/Initial memory usage/limit: 1598620/2147483648 0% Memory state monitoring interval: 60 s Memory usage/limit: 13835889/2147483648 0% Memory usage specifics (count/bytes): Nodes: 5/2040 LSPs: 5/2088 Links: 8/9792 Prefixes: 13/10232 Nets: 8/5120 Paths: 18/1728 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: Tue 2026 Oct 06 01:02:04.411 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 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 protocol Tue Oct 6 01:24:40.368 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: 8023 Respawn count: 3 Started: Tue 2026 Oct 06 01:02:03.125 UTC Null0 ready: Tue 2026 Oct 06 01:02:03.600 UTC Protocol shutdown: No System memory state: Normal Last change: never Memory state: Normal Last change: never Last/Initial memory usage/limit: 1598620/2147483648 0% Memory state monitoring interval: 60 s Memory usage/limit: 13835889/2147483648 0% Memory usage specifics (count/bytes): Nodes: 5/2040 LSPs: 5/2088 Links: 8/9792 Prefixes: 13/10232 Nets: 8/5120 Paths: 18/1728 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: Tue 2026 Oct 06 01:02:04.411 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 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 Tue Oct 6 01:24:40.507 UTC IS-IS 1 hostnames Level System ID Dynamic Hostname 1 * 0010.0100.1001 R1 1 0020.0200.2002 R2 1 0030.0300.3003 R3 1 0040.0400.4004 R4 RP/0/RP0/CPU0:R1#show isis interface Tue Oct 6 01:24:40.631 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: LAN Circuit Number: 1 Last IIH Received: 01:24:39 (1.01 sec ago), 1497 octets Last PDU Rejected: 01:24:39 (1.27 sec ago), 1497 octets, L2 LAN IIH, Circuit-Type mismatch Last IIH Sent: 01:24:33 (7.21 sec ago), 1497 octets IPv4 BFD: Disabled IPv6 BFD: Disabled Level-1 Adjacency Count: 2 Adjacency Flaps: 0 LAN ID: R3.01 Priority (Local/DIS): 64/64 Next LAN IIH in: 1 s 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: 5254.004e.accf Layer-2 Multicast: All Level-1 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: 10.0.0.1 Global Prefix: 10.0.0.0/24 LSP Transmission is: idle LSP Transmit Timer in: 0 ms LSP Burst Size: 9 LSPs in the next 0 ms LSP fast flooding: Unsupported PME Link Delays and Loss: - RP/0/RP0/CPU0:R1#show isis interface brief Tue Oct 6 01:24:40.808 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 - RP/0/RP0/CPU0:R1#show isis neighbors Tue Oct 6 01:24:41.005 UTC IS-IS 1 neighbors: System Id Interface SNPA State Holdtime Type IETF-NSF R2 Gi0/0/0/0 5254.006d.5fdf Up 23 L1 Capable R3 Gi0/0/0/0 5254.00fd.7064 Up 8 L1 Capable Total neighbor count: 2 RP/0/RP0/CPU0:R1#show isis neighbors detail Tue Oct 6 01:24:41.229 UTC IS-IS 1 neighbors: System Id Interface SNPA State Holdtime Type IETF-NSF R2 Gi0/0/0/0 5254.006d.5fdf Up 23 L1 Capable Area Address(es): 49.0001 IPv4 Address(es): 10.0.0.2* Topologies: 'IPv4 Unicast' Uptime: 00:22:37 R3 Gi0/0/0/0 5254.00fd.7064 Up 8 L1 Capable Area Address(es): 49.0001 IPv4 Address(es): 10.0.0.3* Topologies: 'IPv4 Unicast' Uptime: 00:22:36 Total neighbor count: 2 RP/0/RP0/CPU0:R1#show isis adjacency Tue Oct 6 01:24:41.496 UTC IS-IS 1 Level-1 adjacencies: System Id Interface SNPA State Hold Changed NSF IPv4 IPv6 BFD BFD R2 Gi0/0/0/0 5254.006d.5fdf Up 23 00:22:37 Yes None None R3 Gi0/0/0/0 5254.00fd.7064 Up 8 00:22:36 Yes None None Total adjacency count: 2 RP/0/RP0/CPU0:R1#show isis adjacency detail Tue Oct 6 01:24:41.705 UTC IS-IS 1 Level-1 adjacencies: System Id Interface SNPA State Hold Changed NSF IPv4 IPv6 BFD BFD R2 Gi0/0/0/0 5254.006d.5fdf Up 23 00:22:37 Yes None None Area Address: 49.0001 Neighbor IPv4 Address: 10.0.0.2* DIS Priority: 64 Local Priority: 64 Neighbor Priority: 64 Topology: IPv4 Unicast BFD Status: Neighbor Useable (BFD Not Configured) R3 Gi0/0/0/0 5254.00fd.7064 Up 7 00:22:37 Yes None None Area Address: 49.0001 Neighbor IPv4 Address: 10.0.0.3* DIS Priority: 64 Local Priority: 64 Neighbor Priority: 64 (DIS) Topology: IPv4 Unicast BFD Status: Neighbor Useable (BFD Not Configured) Total adjacency count: 2 RP/0/RP0/CPU0:R1#show isis adjacency-log Tue Oct 6 01:24:42.033 UTC IS-IS 1 Level 1 Adjacency Log Capacity: 100, Size: 2 When System Interface State Details --- Tue Oct 6 2026 --- 01:02:04.121 R2 Gi0/0/0/0 d -> u New adjacency IPv4 Unicast Up 01:02:04.770 R3 Gi0/0/0/0 d -> u New adjacency IPv4 Unicast Up RP/0/RP0/CPU0:R1#show isis database Tue Oct 6 01:24:42.289 UTC IS-IS 1 (Level-1) Link State Database LSPID LSP Seq Num LSP Checksum LSP Holdtime/Rcvd ATT/P/OL R1.00-00 * 0x0000000b 0x1264 624 /* 0/0/0 R2.00-00 0x0000000e 0xce6f 1039 /1200 1/0/0 R3.00-00 0x0000000e 0x6072 1159 /1200 1/0/0 R3.01-00 0x0000000c 0xc9bb 673 /1200 0/0/0 R4.00-00 0x0000000c 0x37e3 1043 /1200 1/0/0 Total Level-1 LSP count: 5 Local Level-1 LSP count: 1 RP/0/RP0/CPU0:R1#show isis database detail Tue Oct 6 01:24:42.405 UTC IS-IS 1 (Level-1) Link State Database LSPID LSP Seq Num LSP Checksum LSP Holdtime/Rcvd ATT/P/OL R1.00-00 * 0x0000000b 0x1264 624 /* 0/0/0 Area Address: 49.0001 LSP MTU: 1492 NLPID: 0xcc IP Address: 1.1.1.1 Hostname: R1 Metric: 10 IS-Extended R3.01 Metric: 0 IP-Extended 1.1.1.1/32 Metric: 10 IP-Extended 10.0.0.0/24 R2.00-00 0x0000000e 0xce6f 1039 /1200 1/0/0 Area Address: 49.0001 LSP MTU: 1492 NLPID: 0xcc IP Address: 2.2.2.2 Hostname: R2 Metric: 10 IS-Extended R3.01 Metric: 0 IP-Extended 2.2.2.2/32 Metric: 10 IP-Extended 10.0.0.0/24 R3.00-00 0x0000000e 0x6072 1159 /1200 1/0/0 Area Address: 49.0001 LSP MTU: 1492 NLPID: 0xcc IP Address: 3.3.3.3 Hostname: R3 Metric: 10 IS-Extended R3.01 Metric: 10 IS-Extended R4.00 Metric: 0 IP-Extended 3.3.3.3/32 Metric: 10 IP-Extended 10.0.0.0/24 Metric: 10 IP-Extended 10.0.34.0/24 R3.01-00 0x0000000c 0xc9bb 673 /1200 0/0/0 Metric: 0 IS-Extended R2.00 Metric: 0 IS-Extended R1.00 Metric: 0 IS-Extended R3.00 R4.00-00 0x0000000c 0x37e3 1043 /1200 1/0/0 Area Address: 49.0001 LSP MTU: 1492 NLPID: 0xcc IP Address: 4.4.4.4 Hostname: R4 Metric: 10 IS-Extended R3.00 Metric: 0 IP-Extended 4.4.4.4/32 Metric: 10 IP-Extended 10.0.34.0/24 Metric: 10 IP-Extended 10.0.45.0/24 Total Level-1 LSP count: 5 Local Level-1 LSP count: 1 RP/0/RP0/CPU0:R1#show isis database verbose Tue Oct 6 01:24:42.548 UTC IS-IS 1 (Level-1) Link State Database LSPID LSP Seq Num LSP Checksum LSP Holdtime/Rcvd ATT/P/OL R1.00-00 * 0x0000000b 0x1264 623 /* 0/0/0 Area Address: 49.0001 LSP MTU: 1492 NLPID: 0xcc IP Address: 1.1.1.1 Hostname: R1 Metric: 10 IS-Extended R3.01 Metric: 0 IP-Extended 1.1.1.1/32 Prefix Attribute Flags: X:0 R:0 N:1 E:0 A:0 Metric: 10 IP-Extended 10.0.0.0/24 Prefix Attribute Flags: X:0 R:0 N:0 E:0 A:0 R2.00-00 0x0000000e 0xce6f 1039 /1200 1/0/0 Area Address: 49.0001 LSP MTU: 1492 NLPID: 0xcc IP Address: 2.2.2.2 Hostname: R2 Metric: 10 IS-Extended R3.01 Metric: 0 IP-Extended 2.2.2.2/32 Prefix Attribute Flags: X:0 R:0 N:1 E:0 A:0 Metric: 10 IP-Extended 10.0.0.0/24 Prefix Attribute Flags: X:0 R:0 N:0 E:0 A:0 R3.00-00 0x0000000e 0x6072 1158 /1200 1/0/0 Area Address: 49.0001 LSP MTU: 1492 NLPID: 0xcc IP Address: 3.3.3.3 Hostname: R3 Metric: 10 IS-Extended R3.01 Metric: 10 IS-Extended R4.00 Metric: 0 IP-Extended 3.3.3.3/32 Prefix Attribute Flags: X:0 R:0 N:1 E:0 A:0 Metric: 10 IP-Extended 10.0.0.0/24 Prefix Attribute Flags: X:0 R:0 N:0 E:0 A:0 Metric: 10 IP-Extended 10.0.34.0/24 Prefix Attribute Flags: X:0 R:0 N:0 E:0 A:0 R3.01-00 0x0000000c 0xc9bb 673 /1200 0/0/0 Metric: 0 IS-Extended R2.00 Metric: 0 IS-Extended R1.00 Metric: 0 IS-Extended R3.00 R4.00-00 0x0000000c 0x37e3 1043 /1200 1/0/0 Area Address: 49.0001 LSP MTU: 1492 NLPID: 0xcc IP Address: 4.4.4.4 Hostname: R4 Metric: 10 IS-Extended R3.00 Metric: 0 IP-Extended 4.4.4.4/32 Prefix Attribute Flags: X:0 R:0 N:1 E:0 A:0 Metric: 10 IP-Extended 10.0.34.0/24 Prefix Attribute Flags: X:0 R:0 N:0 E:0 A:0 Metric: 10 IP-Extended 10.0.45.0/24 Prefix Attribute Flags: X:0 R:0 N:0 E:0 A:0 Total Level-1 LSP count: 5 Local Level-1 LSP count: 1 RP/0/RP0/CPU0:R1#show isis topology Tue Oct 6 01:24:42.753 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 5254.006d.5fdf R3 10 R3 Gi0/0/0/0 5254.00fd.7064 R4 20 R3 Gi0/0/0/0 5254.00fd.7064 RP/0/RP0/CPU0:R1#show isis spf-log Tue Oct 6 01:24:42.901 UTC IS-IS 1 Level 1 IPv4 Unicast Route Calculation Log Capacity: 210, Size: 4 Time Total Trig. Timestamp Type (ms) Nodes Count First Trigger LSP Triggers ------------ ----- ----- ----- ----- -------------------- ---------------------- --- Tue Oct 6 2026 --- 01:02:14.035 FSPF 0 5 11 R1.00-00 CONFIG NEWNODE NEWLSP OVLSET LINKGOOD PREFIXGOOD AREAADDR IPADDR 01:02:14.044 FSPF 0 5 21 R2.00-00 NEWNODE NEWLSP ATTSET LINKGOOD PREFIXGOOD AREAADDR IPADDR 01:02:16.141 FSPF 0 5 1 R1.00-00 OVLCLR 01:17:16.192 FSPF 0 5 1 PERIODIC RP/0/RP0/CPU0:R1#show isis spf-log detail Tue Oct 6 01:24:43.095 UTC IS-IS 1 Level 1 IPv4 Unicast Route Calculation Log Capacity: 210, Size: 4 Time Total Trig. Timestamp Type (ms) Nodes Count First Trigger LSP Triggers ------------ ----- ----- ----- ----- -------------------- ---------------------- --- Tue Oct 6 2026 --- 01:02:14.035 FSPF 0 5 11 R1.00-00 CONFIG NEWNODE NEWLSP OVLSET LINKGOOD PREFIXGOOD AREAADDR IPADDR Delay: 10138ms (since first trigger) Trigger Link: R3.01 Trigger Prefix: 1.1.1.1/32 Trigger LSPs: 2 New LSP Arrivals: 0 SR uloop: No Next Wait Interval: 200ms RIB Batches: 0 (0 critical, 0 high, 0 medium, 0 low) Timings (ms): +--Total--+ Real CPU SPT Calculation: 0 0 Route Update: 0 0 ----- ----- Full Calculation: 0 0 01:02:14.044 FSPF 0 5 21 R2.00-00 NEWNODE NEWLSP ATTSET LINKGOOD PREFIXGOOD AREAADDR IPADDR Delay: 2ms (since first trigger) 9ms (since end of last calculation) Trigger Link: R3.01 Trigger Prefix: 2.2.2.2/32 Trigger LSPs: 3 New LSP Arrivals: 0 SR uloop: No Next Wait Interval: 400ms RIB Batches: 0 (0 critical, 0 high, 0 medium, 0 low) Timings (ms): +--Total--+ Real CPU SPT Calculation: 0 0 Route Update: 0 0 ----- ----- Full Calculation: 0 0 01:02:16.141 FSPF 0 5 1 R1.00-00 OVLCLR Delay: 51ms (since first trigger) 2097ms (since end of last calculation) Trigger LSPs: 1 New LSP Arrivals: 0 SR uloop: No Next Wait Interval: 800ms RIB Batches: 0 (0 critical, 0 high, 0 medium, 0 low) Timings (ms): +--Total--+ Real CPU SPT Calculation: 0 0 Route Update: 0 0 ----- ----- Full Calculation: 0 0 01:17:16.192 FSPF 0 5 1 PERIODIC Delay: 50ms (since first trigger) 900051ms (since end of last calculation) Trigger LSPs: 0 New LSP Arrivals: 0 SR uloop: No Next Wait Interval: 200ms RIB Batches: 0 (0 critical, 0 high, 0 medium, 0 low) Timings (ms): +--Total--+ Real CPU SPT Calculation: 0 0 Route Update: 0 0 ----- ----- Full Calculation: 0 0 RP/0/RP0/CPU0:R1#show isis lsp-log Tue Oct 6 01:24:43.238 UTC IS-IS 1 Level 1 LSP Generation Log Capacity: 50, Size: 4 When Count Interface Triggers --- Tue Oct 6 2026 --- 01:02:04.089 1 CONFIG 01:02:04.289 3 Gi0/0/0/0 NEWADJ MSD REMADDR 01:02:07.159 1 Gi0/0/0/0 DIS 01:02:16.090 1 LSPDBOL RP/0/RP0/CPU0:R1#show isis statistics Tue Oct 6 01:24:43.505 UTC IS-IS 1 Packet and Event Statistics Dropped Dropped Total PDUs Sent Received On Input By Update Hello: 159 620 0 - CSNP: 0 153 - 0 PSNP: 1 0 0 0 LSP: 7 14 0 0 LSP Retransmissions: 0 LSP Checksum Errors: 0 IS-IS Update Queue: 0/3500 Total Traffic: 167 High Water Mark: 3 HWM Set: Tue 2026 Oct 06 01:02:14.037 UTC Total Drops: 0 IS-IS Input Queue: 0/4200 Total Traffic: 1585 High Water Mark: 3 Total Drops: 0 Level-1 LSPs sourced (new/refresh): 7/1 Route Calculations IPv4 Unicast Total: 4 Full SPF Calculations: 4 Periodic: 1 Partial Route Calc: 0 Next Hop Calculations: 0 RP/0/RP0/CPU0:R1#show route isis Tue Oct 6 01:24:43.647 UTC i*L1 0.0.0.0/0 [115/10] via 10.0.0.2, 00:22:29, GigabitEthernet0/0/0/0 [115/10] via 10.0.0.3, 00:22:29, GigabitEthernet0/0/0/0 i L1 2.2.2.2/32 [115/10] via 10.0.0.2, 00:22:29, GigabitEthernet0/0/0/0 i L1 3.3.3.3/32 [115/10] via 10.0.0.3, 00:22:29, GigabitEthernet0/0/0/0 i L1 4.4.4.4/32 [115/20] via 10.0.0.3, 00:22:29, GigabitEthernet0/0/0/0 i L1 10.0.34.0/24 [115/20] via 10.0.0.3, 00:22:29, GigabitEthernet0/0/0/0 i L1 10.0.45.0/24 [115/30] via 10.0.0.3, 00:22:29, GigabitEthernet0/0/0/0 RP/0/RP0/CPU0:R1#show isis route Tue Oct 6 01:24:43.903 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 [10/115] via 10.0.0.2, GigabitEthernet0/0/0/0, R2, Weight: 0 via 10.0.0.3, GigabitEthernet0/0/0/0, R3, Weight: 0 C 1.1.1.1/32 is directly connected, Loopback0 L1 2.2.2.2/32 [10/115] via 10.0.0.2, GigabitEthernet0/0/0/0, R2, Weight: 0 L1 3.3.3.3/32 [10/115] via 10.0.0.3, GigabitEthernet0/0/0/0, R3, Weight: 0 L1 4.4.4.4/32 [20/115] via 10.0.0.3, GigabitEthernet0/0/0/0, R3, Weight: 0 C 10.0.0.0/24 is directly connected, GigabitEthernet0/0/0/0 L1 10.0.34.0/24 [20/115] via 10.0.0.3, GigabitEthernet0/0/0/0, R3, Weight: 0 L1 10.0.45.0/24 [30/115] via 10.0.0.3, GigabitEthernet0/0/0/0, R3, Weight: 0 RP/0/RP0/CPU0:R1#show running-config router isis Tue Oct 6 01:24:44.108 UTC router isis 1 is-type level-1 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 address-family ipv4 unicast metric 10 ! ! ! RP/0/RP0/CPU0:R1#show route 0.0.0.0/0 Tue Oct 6 01:24:45.303 UTC Routing entry for 0.0.0.0/0 Known via "isis 1", distance 115, metric 10, candidate default path, type level-1 Installed Oct 6 01:02:14.048 for 00:22:31 Routing Descriptor Blocks 10.0.0.2, from 2.2.2.2, via GigabitEthernet0/0/0/0 Route metric is 10 10.0.0.3, from 3.3.3.3, via GigabitEthernet0/0/0/0 Route metric is 10 No advertising protos. RP/0/RP0/CPU0:R1#show isis database level 1 Tue Oct 6 01:24:45.597 UTC IS-IS 1 (Level-1) Link State Database LSPID LSP Seq Num LSP Checksum LSP Holdtime/Rcvd ATT/P/OL R1.00-00 * 0x0000000b 0x1264 620 /* 0/0/0 R2.00-00 0x0000000e 0xce6f 1036 /1200 1/0/0 R3.00-00 0x0000000e 0x6072 1155 /1200 1/0/0 R3.01-00 0x0000000c 0xc9bb 670 /1200 0/0/0 R4.00-00 0x0000000c 0x37e3 1040 /1200 1/0/0 Total Level-1 LSP count: 5 Local Level-1 LSP count: 1 RP/0/RP0/CPU0:R1#show running-config router static Tue Oct 6 01:24:45.802 UTC router static vrf Mgmt address-family ipv4 unicast 0.0.0.0/0 10.19.0.1 ! ! ! RP/0/RP0/CPU0:R1#show isis statistics Tue Oct 6 01:24:46.893 UTC IS-IS 1 Packet and Event Statistics Dropped Dropped Total PDUs Sent Received On Input By Update Hello: 159 621 0 - CSNP: 0 154 - 0 PSNP: 1 0 0 0 LSP: 7 14 0 0 LSP Retransmissions: 0 LSP Checksum Errors: 0 IS-IS Update Queue: 0/3500 Total Traffic: 168 High Water Mark: 3 HWM Set: Tue 2026 Oct 06 01:02:14.037 UTC Total Drops: 0 IS-IS Input Queue: 0/4200 Total Traffic: 1589 High Water Mark: 3 Total Drops: 0 Level-1 LSPs sourced (new/refresh): 7/1 Route Calculations IPv4 Unicast Total: 4 Full SPF Calculations: 4 Periodic: 1 Partial Route Calc: 0 Next Hop Calculations: 0 RP/0/RP0/CPU0:R1#show isis interface brief Tue Oct 6 01:24:47.104 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 - RP/0/RP0/CPU0:R1#show isis adjacency detail Tue Oct 6 01:24:47.308 UTC IS-IS 1 Level-1 adjacencies: System Id Interface SNPA State Hold Changed NSF IPv4 IPv6 BFD BFD R2 Gi0/0/0/0 5254.006d.5fdf Up 25 00:22:43 Yes None None Area Address: 49.0001 Neighbor IPv4 Address: 10.0.0.2* DIS Priority: 64 Local Priority: 64 Neighbor Priority: 64 Topology: IPv4 Unicast BFD Status: Neighbor Useable (BFD Not Configured) R3 Gi0/0/0/0 5254.00fd.7064 Up 8 00:22:42 Yes None None Area Address: 49.0001 Neighbor IPv4 Address: 10.0.0.3* DIS Priority: 64 Local Priority: 64 Neighbor Priority: 64 (DIS) Topology: IPv4 Unicast BFD Status: Neighbor Useable (BFD Not Configured) Total adjacency count: 2