Cisco Catalyst 6509 - Show IP protocol

[TCCS TCS]

Hello Experts,

When I run the show IP protocol command on Agg switch which are in VSS I see below output. Can you help us understand what does the output mean. Sorry being new to Cisco 6509 thought to check with experts. Please help.

Agg#sh ip prot
*** IP Routing is NSF aware ***

Routing Protocol is "ospf 1"
  Outgoing update filter list for all interfaces is not set
  Incoming update filter list for all interfaces is not set
  Router ID 10.99.1.5
  Number of areas in this router is 1. 1 normal 0 stub 0 nssa
  Maximum path: 4
  Routing for Networks:
    10.0.0.0 0.255.255.255 area 0
  Passive Interface(s):
    GigabitEthernet1/1/1
    GigabitEthernet1/7/1
       TenGigabitEthernet2/2/6
    Control Plane Interface.1
    Loopback0
    Port-channel1
      Vlan32
    Vlan33
  Routing Information Sources:
    Gateway         Distance      Last Update
    10.99.1.4           110      2y18w
    10.99.1.1           110      1w4d
    10.99.1.2           110      1w4d
    10.99.1.3           110      15w5d
  Distance: (default is 110)

[Mark Malone]

Duplicate post looks to be asked in below

https://supportforums.cisco.com/discussion/13217556/cisco-catalyst-how-verify-interfaces-which-ospf-enabled

[TCCS TCS]

Hi Mark,

Can you help me understand what the command output means?

Agg#sh ip prot
*** IP Routing is NSF aware ***

Routing Protocol is "ospf 1"
  Outgoing update filter list for all interfaces is not set
  Incoming update filter list for all interfaces is not set
  Router ID 10.99.1.5
  Number of areas in this router is 1. 1 normal 0 stub 0 nssa
  Maximum path: 4
  Routing for Networks:
    10.0.0.0 0.255.255.255 area 0
  Passive Interface(s):
    GigabitEthernet1/1/1
    GigabitEthernet1/7/1
       TenGigabitEthernet2/2/6
    Control Plane Interface.1
    Loopback0
    Port-channel1
      Vlan32
    Vlan33
  Routing Information Sources:
    Gateway         Distance      Last Update
    10.99.1.4           110      2y18w
    10.99.1.1           110      1w4d
    10.99.1.2           110      1w4d
    10.99.1.3           110      15w5d
  Distance: (default is 110)

[Julio E. Moisa]

Hi

The show ip protocol will show you all the routing protocols (example, Eigrp, OSPF, RIP, BGP, etc) running on your device and their information like interfaces used by the protocol, network associated to the protocols, etc.

In this case you are running OSPF with process 1 only. For example you will see:

Routing Protocol is "ospf 1"   protocol running
  Outgoing update filter list for all interfaces is not set   it is not filtering nothing for outbound traffic
  Incoming update filter list for all interfaces is not set   it is not filtering nothing for inbound traffic
  Router ID 10.99.1.5  The IP address assigned to the OSPF for the router ID
  Number of areas in this router is 1. 1 normal 0 stub 0 nssa   area 0 is the only one area on this router
  Maximum path: 4
  Routing for Networks:
    10.0.0.0 0.255.255.255 area 0  OSPF is advertising the network 10.0.0.0/8
  Passive Interface(s):  Passive interface (they are not receiving routing information)
    GigabitEthernet1/1/1
    GigabitEthernet1/7/1
       TenGigabitEthernet2/2/6
    Control Plane Interface.1
    Loopback0
    Port-channel1
      Vlan32
    Vlan33
  Routing Information Sources:
    Gateway         Distance      Last Update
    10.99.1.4           110      2y18w
    10.99.1.1           110      1w4d
    10.99.1.2           110      1w4d
    10.99.1.3           110      15w5d
  Distance: (default is 110)  the administrative distance of OSPF

Hope it is useful :-)

[TCCS TCS]

Thanks Julio. Much appreciated!!!!

[Julio E. Moisa]

You are welcome, the routing information sources will represent the router-id of the routers that are advertising prefixes and you will see their administrative distance and the time of the last update received from these remote routers. 

You can see the router-id of the router with OSPF executing this command:

show ip ospf 

Please rate the comment if it is useful :-)

[TCCS TCS]

Hi Julio,

What does below command refer to in above output?

Routing Information Sources:
    Gateway         Distance      Last Update
    10.99.1.4           110      2y18w
    10.99.1.1           110      1w4d
    10.99.1.2           110      1w4d
    10.99.1.3           110      15w5d

Do they point to interfaces connected to other devices?