RP/0/RP0/CPU0:R6#show version Sun Oct 4 15:29:07.893 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 R6 uptime is 38 minutes XRd Control Plane Container RP/0/RP0/CPU0:R6#show interface description Sun Oct 4 15:29:08.149 UTC Interface Status Protocol Description -------------------------------------------------------------------------------- Lo0 up up Lo1 up up duplicated destination in both areas Nu0 up up Mg0/RP0/CPU0/0 up up management Gi0/0/0/0 up up to R2 (10.0.26.0/24 p2p) RP/0/RP0/CPU0:R6#show route Sun Oct 4 15:29:08.347 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 10.0.26.2 to network 0.0.0.0 i*L1 0.0.0.0/0 [115/10] via 10.0.26.2, 00:35:45, GigabitEthernet0/0/0/0 i L1 1.1.1.1/32 [115/20] via 10.0.26.2, 00:35:48, GigabitEthernet0/0/0/0 i L1 2.2.2.2/32 [115/10] via 10.0.26.2, 00:35:48, GigabitEthernet0/0/0/0 L 6.6.6.6/32 is directly connected, 00:36:11, Loopback0 i L1 10.0.12.0/24 [115/20] via 10.0.26.2, 00:35:48, GigabitEthernet0/0/0/0 i L1 10.0.25.0/24 [115/20] via 10.0.26.2, 00:35:48, GigabitEthernet0/0/0/0 C 10.0.26.0/24 is directly connected, 00:36:07, GigabitEthernet0/0/0/0 L 10.0.26.6/32 is directly connected, 00:36:07, GigabitEthernet0/0/0/0 L 172.16.0.100/32 is directly connected, 00:36:11, Loopback1 RP/0/RP0/CPU0:R6#show interface Sun Oct 4 15:29:08.557 UTC Loopback0 is up, line protocol is up Interface state transitions: 1 Hardware is Loopback interface(s) Internet address is 6.6.6.6/32 MTU 1500 bytes, BW 0 Kbit reliability Unknown, txload Unknown, rxload Unknown Encapsulation Loopback, loopback not set, Last link flapped 00:36:12 Last input Unknown, output Unknown Last clearing of "show interface" counters Unknown Input/output data rate is disabled. Loopback1 is up, line protocol is up Interface state transitions: 1 Hardware is Loopback interface(s) Description: duplicated destination in both areas Internet address is 172.16.0.100/32 MTU 1500 bytes, BW 0 Kbit reliability Unknown, txload Unknown, rxload Unknown Encapsulation Loopback, loopback not set, Last link flapped 00:36:12 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 00:37:59 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 5254.0035.9fd0 (bia 5254.0035.9fd0) Description: management Internet address is 10.19.2.66/16 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 00:36:07 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, 1 packets/sec 5 minute output rate 2000 bits/sec, 2 packets/sec 2674 packets input, 306952 bytes, 0 total input drops 0 drops for unrecognized upper-level protocol Received 13 broadcast packets, 29 multicast packets 0 runts, 0 giants, 0 throttles, 0 parity 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 3595 packets output, 687343 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 5254.009e.e480 (bia 5254.009e.e480) Description: to R2 (10.0.26.0/24 p2p) Internet address is 10.0.26.6/24 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 00:36:08 ARP type ARPA, ARP timeout 04:00:00 Last input 00:00:00, output 00:00:00 Last clearing of "show interface" counters 00:03:13 5 minute input rate 1000 bits/sec, 0 packets/sec 5 minute output rate 1000 bits/sec, 0 packets/sec 135 packets input, 45730 bytes, 0 total input drops 0 drops for unrecognized upper-level protocol Received 0 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 133 packets output, 45374 bytes, 0 total output drops Output 0 broadcast packets, 22 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:R6#show route summary Sun Oct 4 15:29:08.912 UTC Route Source Routes Backup Deleted Memory(bytes) connected 1 2 0 600 local 3 0 0 600 application fib_mgr 0 0 0 0 isis 1 5 1 0 1200 dagr 0 0 0 0 Total 9 3 0 2400 RP/0/RP0/CPU0:R6#show route static Sun Oct 4 15:29:09.184 UTC % No matching routes found RP/0/RP0/CPU0:R6#show cef Sun Oct 4 15:29:09.393 UTC Prefix Next Hop Interface ------------------- ------------------- ------------------ 0.0.0.0/0 10.0.26.2/32 GigabitEthernet0/0/0/0 0.0.0.0/32 broadcast 1.1.1.1/32 10.0.26.2/32 GigabitEthernet0/0/0/0 2.2.2.2/32 10.0.26.2/32 GigabitEthernet0/0/0/0 6.6.6.6/32 receive Loopback0 10.0.12.0/24 10.0.26.2/32 GigabitEthernet0/0/0/0 10.0.25.0/24 10.0.26.2/32 GigabitEthernet0/0/0/0 10.0.26.0/24 attached GigabitEthernet0/0/0/0 10.0.26.0/32 broadcast GigabitEthernet0/0/0/0 10.0.26.2/32 10.0.26.2/32 GigabitEthernet0/0/0/0 10.0.26.6/32 receive GigabitEthernet0/0/0/0 10.0.26.255/32 broadcast GigabitEthernet0/0/0/0 172.16.0.100/32 receive Loopback1 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:R6#show arp Sun Oct 4 15:29:09.639 UTC ------------------------------------------------------------------------------- 0/RP0/CPU0 ------------------------------------------------------------------------------- Address Age Hardware Addr State Type Interface 10.0.26.2 00:35:57 5254.000f.9e67 Dynamic ARPA GigabitEthernet0/0/0/0 10.0.26.6 - 5254.009e.e480 Interface ARPA GigabitEthernet0/0/0/0 RP/0/RP0/CPU0:R6#show configuration commit list Sun Oct 4 15:29:09.877 UTC SNo. Label/ID User Line Client Time Stamp ~~~~ ~~~~~~~~ ~~~~ ~~~~ ~~~~~~ ~~~~~~~~~~ 1 1000000003 cisco vty0:node0_RP0_CPU CLI Sun Oct 4 15:24:23 2026 2 1000000002 cisco vty0:node0_RP0_CPU CLI Sun Oct 4 15:18:42 2026 3 1000000001 cisco vty0:node0_RP0_CPU CLI Sun Oct 4 15:07:07 2026 RP/0/RP0/CPU0:R6#show isis Sun Oct 4 15:29:09.986 UTC IS-IS Router: 1 System Id: 0060.0600.6006 Hostname: R6 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: 4352 Respawn count: 1 Started: Sun 2026 Oct 04 14:52:45.079 UTC Null0 ready: Sun 2026 Oct 04 14:52:46.778 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: 13826075/2147483648 0% Memory usage specifics (count/bytes): Nodes: 3/1224 LSPs: 3/1257 Links: 4/4896 Prefixes: 10/8624 Nets: 8/4736 Paths: 12/1152 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: Sun 2026 Oct 04 14:52:47.779 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) Loopback1 is running passively (passive in configuration) GigabitEthernet0/0/0/0 is running actively (active in configuration) RP/0/RP0/CPU0:R6#show isis protocol Sun Oct 4 15:29:10.296 UTC IS-IS Router: 1 System Id: 0060.0600.6006 Hostname: R6 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: 4352 Respawn count: 1 Started: Sun 2026 Oct 04 14:52:45.079 UTC Null0 ready: Sun 2026 Oct 04 14:52:46.778 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: 13826075/2147483648 0% Memory usage specifics (count/bytes): Nodes: 3/1224 LSPs: 3/1257 Links: 4/4896 Prefixes: 10/8624 Nets: 8/4736 Paths: 12/1152 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: Sun 2026 Oct 04 14:52:47.779 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) Loopback1 is running passively (passive in configuration) GigabitEthernet0/0/0/0 is running actively (active in configuration) RP/0/RP0/CPU0:R6#show isis hostname Sun Oct 4 15:29:10.480 UTC IS-IS 1 hostnames Level System ID Dynamic Hostname 1 0010.0100.1001 R1 1 0020.0200.2002 R2 1 * 0060.0600.6006 R6 RP/0/RP0/CPU0:R6#show isis interface Sun Oct 4 15:29:10.689 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: 6.6.6.6/32 PME Link Delays and Loss: - Loopback1 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: 172.16.0.100/32 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: P2P Circuit Number: 0 Extended Circuit Number: 6 Last IIH Received: 15:29:04 (6.52 sec ago), 1497 octets Last IIH Sent: 15:29:02 (7.87 sec ago), 1497 octets Sending next P2P IIH in: 1 s IPv4 BFD: Disabled IPv6 BFD: Disabled Level-1 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: 5254.009e.e480 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: 10.0.26.6 Global Prefix: 10.0.26.0/24 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: 14:53:12.195 Received CSNP complete: 14:53:13.018 LSP Pacing Start: 14:53:13.019 LSP fast flooding: Disabled PME Link Delays and Loss: - RP/0/RP0/CPU0:R6#show isis interface brief Sun Oct 4 15:29:10.856 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 - - - Lo1 Yes - - 0/0 1/1 No - - - Gi0/0/0/0 Yes 1 - 1/1 1/1 Up 1497 - - RP/0/RP0/CPU0:R6#show isis neighbors Sun Oct 4 15:29:10.983 UTC IS-IS 1 neighbors: System Id Interface SNPA State Holdtime Type IETF-NSF R2 Gi0/0/0/0 *PtoP* Up 23 L1 Capable Total neighbor count: 1 RP/0/RP0/CPU0:R6#show isis neighbors detail Sun Oct 4 15:29:11.173 UTC IS-IS 1 neighbors: System Id Interface SNPA State Holdtime Type IETF-NSF R2 Gi0/0/0/0 *PtoP* Up 23 L1 Capable Area Address(es): 49.0001 IPv4 Address(es): 10.0.26.2* Topologies: 'IPv4 Unicast' Uptime: 00:35:59 Total neighbor count: 1 RP/0/RP0/CPU0:R6#show isis adjacency Sun Oct 4 15:29:11.285 UTC IS-IS 1 Level-1 adjacencies: System Id Interface SNPA State Hold Changed NSF IPv4 IPv6 BFD BFD R2 Gi0/0/0/0 *PtoP* Up 22 00:35:59 Yes None None Total adjacency count: 1 RP/0/RP0/CPU0:R6#show isis adjacency detail Sun Oct 4 15:29:11.533 UTC IS-IS 1 Level-1 adjacencies: System Id Interface SNPA State Hold Changed NSF IPv4 IPv6 BFD BFD R2 Gi0/0/0/0 *PtoP* Up 22 00:35:59 Yes None None Area Address: 49.0001 Neighbor IPv4 Address: 10.0.26.2* Topology: IPv4 Unicast BFD Status: Neighbor Useable (BFD Not Configured) Adjacency Flaps: 0 Total adjacency count: 1 RP/0/RP0/CPU0:R6#show isis adjacency-log Sun Oct 4 15:29:11.721 UTC IS-IS 1 Level 1 Adjacency Log Capacity: 100, Size: 2 When System Interface State Details --- Sun Oct 4 2026 --- 14:53:11.586 R2 Gi0/0/0/0 d -> i 14:53:12.195 R2 Gi0/0/0/0 i -> u New adjacency IPv4 Unicast Up RP/0/RP0/CPU0:R6#show isis database Sun Oct 4 15:29:11.823 UTC IS-IS 1 (Level-1) Link State Database LSPID LSP Seq Num LSP Checksum LSP Holdtime/Rcvd ATT/P/OL R1.00-00 0x00000007 0xdab6 763 /1200 0/0/0 R2.00-00 0x0000000a 0xc4a0 919 /1200 1/0/0 R6.00-00 * 0x00000009 0x03ef 914 /* 0/0/0 Total Level-1 LSP count: 3 Local Level-1 LSP count: 1 RP/0/RP0/CPU0:R6#show isis database detail Sun Oct 4 15:29:11.976 UTC IS-IS 1 (Level-1) Link State Database LSPID LSP Seq Num LSP Checksum LSP Holdtime/Rcvd ATT/P/OL R1.00-00 0x00000007 0xdab6 763 /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: 0 IP-Extended 1.1.1.1/32 Metric: 10 IP-Extended 10.0.12.0/24 R2.00-00 0x0000000a 0xc4a0 919 /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 R1.00 Metric: 10 IS-Extended R6.00 Metric: 0 IP-Extended 2.2.2.2/32 Metric: 10 IP-Extended 10.0.12.0/24 Metric: 10 IP-Extended 10.0.25.0/24 Metric: 10 IP-Extended 10.0.26.0/24 R6.00-00 * 0x00000009 0x03ef 913 /* 0/0/0 Area Address: 49.0001 LSP MTU: 1492 NLPID: 0xcc IP Address: 6.6.6.6 Hostname: R6 Metric: 10 IS-Extended R2.00 Metric: 0 IP-Extended 6.6.6.6/32 Metric: 10 IP-Extended 10.0.26.0/24 Metric: 0 IP-Extended 172.16.0.100/32 Total Level-1 LSP count: 3 Local Level-1 LSP count: 1 RP/0/RP0/CPU0:R6#show isis database verbose Sun Oct 4 15:29:12.082 UTC IS-IS 1 (Level-1) Link State Database LSPID LSP Seq Num LSP Checksum LSP Holdtime/Rcvd ATT/P/OL R1.00-00 0x00000007 0xdab6 763 /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: 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 10.0.12.0/24 Prefix Attribute Flags: X:0 R:0 N:0 E:0 A:0 R2.00-00 0x0000000a 0xc4a0 919 /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 R1.00 Metric: 10 IS-Extended R6.00 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 10.0.12.0/24 Prefix Attribute Flags: X:0 R:0 N:0 E:0 A:0 Metric: 10 IP-Extended 10.0.25.0/24 Prefix Attribute Flags: X:0 R:0 N:0 E:0 A:0 Metric: 10 IP-Extended 10.0.26.0/24 Prefix Attribute Flags: X:0 R:0 N:0 E:0 A:0 R6.00-00 * 0x00000009 0x03ef 913 /* 0/0/0 Area Address: 49.0001 LSP MTU: 1492 NLPID: 0xcc IP Address: 6.6.6.6 Hostname: R6 Metric: 10 IS-Extended R2.00 Metric: 0 IP-Extended 6.6.6.6/32 Prefix Attribute Flags: X:0 R:0 N:1 E:0 A:0 Metric: 10 IP-Extended 10.0.26.0/24 Prefix Attribute Flags: X:0 R:0 N:0 E:0 A:0 Metric: 0 IP-Extended 172.16.0.100/32 Prefix Attribute Flags: X:0 R:0 N:1 E:0 A:0 Total Level-1 LSP count: 3 Local Level-1 LSP count: 1 RP/0/RP0/CPU0:R6#show isis topology Sun Oct 4 15:29:12.285 UTC IS-IS 1 paths to IPv4 Unicast (Level-1) routers System Id Metric Next-Hop Interface SNPA R1 20 R2 Gi0/0/0/0 *PtoP* R2 10 R2 Gi0/0/0/0 *PtoP* R6 -- RP/0/RP0/CPU0:R6#show isis spf-log Sun Oct 4 15:29:12.386 UTC IS-IS 1 Level 1 IPv4 Unicast Route Calculation Log Capacity: 210, Size: 15 Time Total Trig. Timestamp Type (ms) Nodes Count First Trigger LSP Triggers ------------ ----- ----- ----- ----- -------------------- ---------------------- --- Sun Oct 4 2026 --- 14:52:48.091 FSPF 0 0 2 CONFIG 14:52:57.879 FSPF 0 1 7 R6.00-00 CONFIG NEWNODE NEWLSP OVLSET PREFIXGOOD AREAADDR IPADDR 14:53:00.028 FSPF 0 1 1 R6.00-00 OVLCLR 14:53:00.890 PRC 0 1 1 R6.00-00 PREFIXGOOD 14:53:13.644 FSPF 0 3 10 R1.00-00 NEWNODE NEWLSP PREFIXGOOD AREAADDR IPADDR 14:53:15.141 FSPF 0 3 1 R2.00-00 LINKGOOD 14:53:18.342 FSPF 0 3 1 R2.00-00 LINKGOOD 14:53:20.383 FSPF 2 3 2 R6.00-00 LINKGOOD 14:53:23.343 PRC 1 3 1 R2.00-00 ATTSET 15:07:10.253 PRC 0 3 1 R6.00-00 PREFIXGOOD 15:08:20.436 FSPF 0 3 1 PERIODIC 15:13:03.136 FSPF 1 3 2 R2.00-00 LINKBAD PREFIXBAD 15:18:43.642 PRC 0 3 1 R6.00-00 PREFIXBAD 15:24:25.948 PRC 0 3 1 R6.00-00 PREFIXGOOD 15:24:31.232 FSPF 1 3 2 R2.00-00 LINKGOOD PREFIXGOOD RP/0/RP0/CPU0:R6#show isis spf-log detail Sun Oct 4 15:29:12.527 UTC IS-IS 1 Level 1 IPv4 Unicast Route Calculation Log Capacity: 210, Size: 15 Time Total Trig. Timestamp Type (ms) Nodes Count First Trigger LSP Triggers ------------ ----- ----- ----- ----- -------------------- ---------------------- --- Sun Oct 4 2026 --- 14:52:48.091 FSPF 0 0 2 CONFIG Delay: 0ms (since first trigger) 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 14:52:57.879 FSPF 0 1 7 R6.00-00 CONFIG NEWNODE NEWLSP OVLSET PREFIXGOOD AREAADDR IPADDR Delay: 9788ms (since first trigger) 9788ms (since end of last calculation) Trigger Prefix: 6.6.6.6/32 Trigger LSPs: 1 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 14:53:00.028 FSPF 0 1 1 R6.00-00 OVLCLR Delay: 51ms (since first trigger) 2149ms (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 14:53:00.890 PRC 0 1 1 R6.00-00 PREFIXGOOD Delay: 50ms (since first trigger) 862ms (since end of last calculation) Trigger Prefix: 10.0.26.0/24 Trigger LSPs: 1 New LSP Arrivals: 0 SR uloop: No Next Wait Interval: 1600ms 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 14:53:13.644 FSPF 0 3 10 R1.00-00 NEWNODE NEWLSP PREFIXGOOD AREAADDR IPADDR Delay: 51ms (since first trigger) 12754ms (since end of last calculation) 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 14:53:15.141 FSPF 0 3 1 R2.00-00 LINKGOOD Delay: 50ms (since first trigger) 1497ms (since end of last calculation) Trigger Link: R1.00 Trigger LSPs: 1 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 14:53:18.342 FSPF 0 3 1 R2.00-00 LINKGOOD Delay: 50ms (since first trigger) 3201ms (since end of last calculation) Trigger Link: R6.00 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 14:53:20.383 FSPF 2 3 2 R6.00-00 LINKGOOD Delay: 50ms (since first trigger) 2041ms (since end of last calculation) Trigger Link: R2.00 Trigger LSPs: 2 New LSP Arrivals: 0 SR uloop: No Next Wait Interval: 1600ms RIB Batches: 2 (0 critical, 0 high, 1 medium, 1 low) Timings (ms): +--Total--+ Real CPU SPT Calculation: 0 0 Route Update: 2 1 ----- ----- Full Calculation: 2 1 14:53:23.343 PRC 1 3 1 R2.00-00 ATTSET Delay: 50ms (since first trigger) 2958ms (since end of last calculation) Trigger LSPs: 1 New LSP Arrivals: 0 SR uloop: No Next Wait Interval: 3200ms RIB Batches: 1 (0 critical, 0 high, 0 medium, 1 low) Timings (ms): +--Total--+ Real CPU SPT Calculation: 0 0 Route Update: 1 0 ----- ----- Full Calculation: 1 0 15:07:10.253 PRC 0 3 1 R6.00-00 PREFIXGOOD Delay: 51ms (since first trigger) 826909ms (since end of last calculation) Trigger Prefix: 172.16.0.100/32 Trigger LSPs: 1 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 15:08:20.436 FSPF 0 3 1 PERIODIC Delay: 50ms (since first trigger) 70183ms (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 15:13:03.136 FSPF 1 3 2 R2.00-00 LINKBAD PREFIXBAD Delay: 50ms (since first trigger) 282700ms (since end of last calculation) Trigger Link: R6.00 Trigger Prefix: 10.0.26.0/24 Trigger LSPs: 1 New LSP Arrivals: 0 SR uloop: No Next Wait Interval: 200ms RIB Batches: 1 (0 critical, 0 high, 0 medium, 1 low) Timings (ms): +--Total--+ Real CPU SPT Calculation: 0 0 Route Update: 1 0 ----- ----- Full Calculation: 1 0 15:18:43.642 PRC 0 3 1 R6.00-00 PREFIXBAD Delay: 50ms (since first trigger) 340505ms (since end of last calculation) Trigger Prefix: 172.16.0.100/32 Trigger LSPs: 1 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 15:24:25.948 PRC 0 3 1 R6.00-00 PREFIXGOOD Delay: 50ms (since first trigger) 342306ms (since end of last calculation) Trigger Prefix: 172.16.0.100/32 Trigger LSPs: 1 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 15:24:31.232 FSPF 1 3 2 R2.00-00 LINKGOOD PREFIXGOOD Delay: 50ms (since first trigger) 5284ms (since end of last calculation) Trigger Link: R6.00 Trigger Prefix: 10.0.26.0/24 Trigger LSPs: 1 New LSP Arrivals: 0 SR uloop: No Next Wait Interval: 400ms RIB Batches: 1 (0 critical, 0 high, 0 medium, 1 low) Timings (ms): +--Total--+ Real CPU SPT Calculation: 0 0 Route Update: 1 0 ----- ----- Full Calculation: 1 0 RP/0/RP0/CPU0:R6#show isis lsp-log Sun Oct 4 15:29:12.713 UTC IS-IS 1 Level 1 LSP Generation Log Capacity: 50, Size: 8 When Count Interface Triggers --- Sun Oct 4 2026 --- 14:52:48.153 1 CONFIG 14:52:56.737 1 Lo0 IPUP 14:52:59.977 1 LSPDBOL 14:53:00.839 1 Gi0/0/0/0 IPUP 14:53:20.332 1 Gi0/0/0/0 SABIT 15:07:10.202 1 Lo1 CONFIG 15:18:43.591 1 IPDOWN 15:24:25.898 1 Lo1 CONFIG RP/0/RP0/CPU0:R6#show isis statistics Sun Oct 4 15:29:12.880 UTC IS-IS 1 Packet and Event Statistics Dropped Dropped Total PDUs Sent Received On Input By Update Hello: 254 250 0 - CSNP: 1 1 - 0 PSNP: 10 6 0 0 LSP: 6 11 0 0 LSP Retransmissions: 0 LSP Checksum Errors: 0 IS-IS Update Queue: 0/3500 Total Traffic: 18 High Water Mark: 2 HWM Set: Sun 2026 Oct 04 14:53:13.592 UTC Total Drops: 0 IS-IS Input Queue: 0/4200 Total Traffic: 268 High Water Mark: 2 Total Drops: 0 Level-1 LSPs sourced (new/refresh): 10/1 Route Calculations IPv4 Unicast Total: 15 Full SPF Calculations: 10 Periodic: 1 Partial Route Calc: 5 Next Hop Calculations: 0 RP/0/RP0/CPU0:R6#show route isis Sun Oct 4 15:29:13.025 UTC i*L1 0.0.0.0/0 [115/10] via 10.0.26.2, 00:35:49, GigabitEthernet0/0/0/0 i L1 1.1.1.1/32 [115/20] via 10.0.26.2, 00:35:52, GigabitEthernet0/0/0/0 i L1 2.2.2.2/32 [115/10] via 10.0.26.2, 00:35:52, GigabitEthernet0/0/0/0 i L1 10.0.12.0/24 [115/20] via 10.0.26.2, 00:35:52, GigabitEthernet0/0/0/0 i L1 10.0.25.0/24 [115/20] via 10.0.26.2, 00:35:52, GigabitEthernet0/0/0/0 RP/0/RP0/CPU0:R6#show isis route Sun Oct 4 15:29:13.348 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 10.0.26.2, GigabitEthernet0/0/0/0, R2, Weight: 0 L1 1.1.1.1/32 [20/115] via 10.0.26.2, GigabitEthernet0/0/0/0, R2, Weight: 0 L1 2.2.2.2/32 [10/115] via 10.0.26.2, GigabitEthernet0/0/0/0, R2, Weight: 0 C 6.6.6.6/32 is directly connected, Loopback0 L1 10.0.12.0/24 [20/115] via 10.0.26.2, GigabitEthernet0/0/0/0, R2, Weight: 0 L1 10.0.25.0/24 [20/115] via 10.0.26.2, GigabitEthernet0/0/0/0, R2, Weight: 0 C 10.0.26.0/24 is directly connected, GigabitEthernet0/0/0/0 C 172.16.0.100/32 is directly connected, Loopback1 RP/0/RP0/CPU0:R6#show running-config router isis Sun Oct 4 15:29:13.494 UTC router isis 1 is-type level-1 net 49.0001.0060.0600.6006.00 log adjacency changes address-family ipv4 unicast metric-style wide ! interface Loopback0 passive address-family ipv4 unicast ! ! interface Loopback1 passive address-family ipv4 unicast ! ! interface GigabitEthernet0/0/0/0 point-to-point address-family ipv4 unicast metric 10 ! ! ! RP/0/RP0/CPU0:R6#show route 0.0.0.0/0 Sun Oct 4 15:29:14.444 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 4 14:53:23.344 for 00:35:51 Routing Descriptor Blocks 10.0.26.2, from 2.2.2.2, via GigabitEthernet0/0/0/0 Route metric is 10 No advertising protos. RP/0/RP0/CPU0:R6#show isis database level 1 Sun Oct 4 15:29:14.661 UTC IS-IS 1 (Level-1) Link State Database LSPID LSP Seq Num LSP Checksum LSP Holdtime/Rcvd ATT/P/OL R1.00-00 0x00000007 0xdab6 760 /1200 0/0/0 R2.00-00 0x0000000a 0xc4a0 916 /1200 1/0/0 R6.00-00 * 0x00000009 0x03ef 911 /* 0/0/0 Total Level-1 LSP count: 3 Local Level-1 LSP count: 1 RP/0/RP0/CPU0:R6#show running-config router static Sun Oct 4 15:29:14.786 UTC router static vrf Mgmt address-family ipv4 unicast 0.0.0.0/0 10.19.0.1 ! ! ! RP/0/RP0/CPU0:R6#show route 172.16.0.100/32 Sun Oct 4 15:29:15.646 UTC Routing entry for 172.16.0.100/32 Known via "local", distance 0, metric 0 (connected) Installed Oct 4 14:52:56.676 for 00:36:19 Routing Descriptor Blocks directly connected, via Loopback1 Route metric is 0 Redist Advertisers: 3 (protoid=3, clientid=38) RP/0/RP0/CPU0:R6#show route 172.16.0.100/32 detail Sun Oct 4 15:29:15.819 UTC Routing entry for 172.16.0.100/32 Known via "local", distance 0, metric 0 (connected) Installed Oct 4 14:52:56.676 for 00:36:19 Routing Descriptor Blocks directly connected, via Loopback1 Route metric is 0 Label: None Tunnel ID: None Binding Label: None Extended communities count: 0 NHID: 0x0 (Ref: 0) Route version is 0x2 (2) No local label IP Precedence: Not Set QoS Group ID: Not Set Flow-tag: Not Set Fwd-class: Not Set Route Priority: RIB_PRIORITY_LOCAL (3) SVD Type RIB_SVD_TYPE_LOCAL Download Priority 0, Download Version 4 Redist Advertisers: 3 (protoid=3, clientid=38) Extended communities count: 0 RP/0/RP0/CPU0:R6#show cef 172.16.0.100/32 Sun Oct 4 15:29:16.072 UTC 172.16.0.100/32, version 4, attached, receive Updated Oct 4 14:52:56.691 Prefix Len 32 internal 0x3006041 (ptr 0x8851c900) [3], 0x400 (0x8988c618), 0x0 (0x0) , receive adjacency, internal 0x3006041 0x0 (ptr 0x8851c900) [3], 0x400 (0x8988c618), 0x0 (0x0) Updated Oct 4 14:52:56.691 Prefix Len 32, traffic index 0, precedence n/a, priority 0 gateway array (0x89724538) reference count 1, flags 0x0, source rib (7), 0 backups [2 type 3 flags 0x8401 (0x897c8670) ext 0x0 (0x0)] LW-LDI[type=3, refc=1, ptr=0x8988c618, sh-ldi=0x897c8670] gateway array update type-time 1 Oct 4 14:52:56.691 LDI Update time Oct 4 14:52:56.691 LW-LDI-TS Oct 4 14:52:56.691 via Loopback1, 23 dependencies, weight 0, class 0 [flags 0x8] path-idx 0 NHID 0x0 [0x88932390 0x0] receive adjacency Load distribution: 0 (refcount 2) Hash OK Interface Address 0 Y recursive receive RP/0/RP0/CPU0:R6#show isis route 172.16.0.100/32 Sun Oct 4 15:29:16.280 UTC C 172.16.0.100/32 is directly connected, Loopback1