Guest

Preview Tool

Cisco Bug: CSCvt46409 - N7k OSPF area range not advertising cost

Last Modified

Sep 01, 2020

Products (9)

  • Cisco Nexus 7000 Series Switches
  • 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 7700 10-Slot Switch
  • Cisco Nexus 7000 9-Slot Switch
  • Cisco Nexus 7700 2-Slot Switch

Known Affected Releases

7.3(4)D1(1)

Description (partial)

Symptom:
OSPF ABR router should advertise a prefix with the cost 1000

version 7.3(4)D1(1)

interface Ethernet1/2
  ip address 192.168.2.2/24
  ip router ospf 1 area 0.0.0.1
  no shutdown

Nexus7000-1 # show run ospf

!Command: show running-config ospf
!Time: Wed Mar 11 00:51:14 2020

version 7.3(4)D1(1)
feature ospf

router ospf 1
  router-id 1.1.1.1
  area 0.0.0.1 range 192.168.2.0/24 cost 1000

interface Ethernet1/1
  ip router ospf 1 area 0.0.0.0

interface Ethernet1/2
  ip router ospf 1 area 0.0.0.1

513E.D.03-Nexus7000-1-CALO(config-router)# show ip ospf | i 192.168.2.0
          192.168.2.0/24 Active (Num nets: 1) Advertise Cost configured 1000
513E.D.03-Nexus7000-1-CALO(config-router)#


513E.D.03-Nexus7000-1-CALO(config-router)# show ip ospf database 192.168.2.0 det
        OSPF Router with ID (1.1.1.1) (Process ID 1 VRF default)

                Summary Network Link States (Area 0.0.0.0)

   LS age: 77
   Options: 0x2 (No TOS-capability, No DC)
   LS Type: Network Summary
   Link State ID: 192.168.2.0 (Network address)
   Advertising Router: 1.1.1.1
   LS Seq Number: 0x80000002
   Checksum: 0xab3d
   Length: 28
   Network Mask: /24
      TOS:   0 Metric: 4 <<<<<< should be 1000

Conditions:
this happens only if we have the same subnet configured on an interface locally.
In other words if we have exact intra area route for configured range.
Bug details contain sensitive information and therefore require a Cisco.com account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.