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Cisco Bug: CSCup39948 - maximum routes X warning-only starts dropping routes after reload

Last Modified

Nov 27, 2020

Products (8)

  • CiscoPro Workgroup EtherSwitch Software
  • Cisco Nexus 7000 10-Slot Switch
  • Cisco Nexus 7000 4-Slot Switch
  • Cisco Nexus 7700 6-Slot Switch
  • Cisco Nexus 7700 18-Slot Switch
  • Cisco Nexus 7000 18-Slot Switch
  • Cisco Nexus 7000 9-Slot Switch
  • Cisco Nexus 7700 10-Slot Switch

Known Affected Releases

6.2(2a) 6.2(6a) 7.0(3)I2(0.562)

Description (partial)

Symptom:
After reload with maximum routes X warning-only devices stops installing routes into routing table saying it has reached the limit configured.

Even after the command stays the same in running config. after reload device ignores warning-only and set the number as actual limit for the routing table.

And you will see following msg says configured limit reached even though the running config will say warning only.

URIB-4-ROUTELIMIT_EXCEEDED  urib [5997] (test-base) Number of routes (4) reached or exceeds configured limit (4); dropped (1)


vrf context test
  address-family ipv4 unicast
    maximum routes 4 warning-only >>>>>>>>>>> warning only

after reload

show routing vrf test internal

SUP state: ACTIVE
Clean Restart: YES
Ksink: PSS URI: volatile:/dev/shm/urib_runtime_pss
Servers   ; CLIS: Up  ; L3VM: Up  ; RPM: Up  ; LISP: Down; UFDM: Up  ;
Registered; CLIS: Yes ; L3VM: Yes ; RPM: Yes ; LISP: No  ; UFDM: Yes ;
SHM Min: 96; Size: 96
MPLS VPN MIB Trap Threshold: disabled by default
debug-filter vrf: default (0x1)
             client: all (index 0x0) (mask 0x1)
             prefix-list: none

VRF "test" (0x00000003) State: UP (Up) UFDM Enabled: Yes
    TIB converged: Yes
    Route limit 4, warning limit 100% (4)>>>>>>>>>>>>> set the number as an actual limit
    Reinstall at 0% (4), pending: Yes
    Last MIB trap 00:05:49 ago; Max reset: No; Warn reset: Yes
   Current count 4, added 4, deleted 0, dropped 5

Conditions:
When maximum routes X command configured for a routing table with warning-only option.
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