OSPF Database & routing table

[actkillerby]

Why would there be discrepancies between the ospf database and the entries in the routing table. If I do show ip ospf database there are a significant number of entries that are not shown but are in the network list under router ospf....

Why would this be? We are having occasional connectivity problems with 2 of the subnets that are not in the ospf database but are in the network router list.

Any help you can give is appreciated.

Alex

Sent from Cisco Technical Support iPad App

[Sudeep Valengattil]

Hi Alex,

So you can see the subnets in it .. rite?

  Link connected to: a Stub Network

   (Link ID) Network/subnet number: 10.115.44.0

   (Link Data) Network Mask: 255.255.255.0

    Number of TOS metrics: 0

     TOS 0 Metrics: 1

Link connected to: a Stub Network

   (Link ID) Network/subnet number: 10.115.52.0

   (Link Data) Network Mask: 255.255.255.0

    Number of TOS metrics: 0

     TOS 0 Metrics: 15

  Link connected to: a Stub Network

   (Link ID) Network/subnet number: 10.115.63.0

   (Link Data) Network Mask: 255.255.255.0

    Number of TOS metrics: 0

     TOS 0 Metrics: 1

Regards,

Sudeep

[actkillerby]

Hi Sudeep

Yes but cannot see it when I do

sh ip ospf database on another router in the area

       OSPF Router with ID (192.168.162.2) (Process ID 2)

                Router Link States (Area 0)

Link ID         ADV Router      Age         Seq#       Checksum Link count
192.168.162.1   192.168.162.1   1855        0x80026107 0x31B9   30
192.168.162.2   192.168.162.2   99          0x8002622E 0xD3F6   43
192.168.162.3   192.168.162.3   338         0x8001EF9E 0x18A0   58
192.168.162.7   192.168.162.7   1276        0x80004CC8 0x29C1   25
192.168.162.8   192.168.162.8   886         0x80012338 0xE59A   25

                Net Link States (Area 0)

Link ID         ADV Router      Age         Seq#       Checksum
10.89.164.3     192.168.162.3   338         0x80004256 0xAB3F
10.89.164.131   192.168.162.3   338         0x80004257 0xA4C4
10.89.184.3     192.168.162.3   338         0x80000CCC 0x73A4
10.115.0.5      192.168.162.2   99          0x80000233 0x63F6
10.115.1.193    192.168.162.1   1855        0x8000023A 0x874D
10.115.6.2      192.168.162.3   338         0x80000CCC 0x767A
10.115.18.1     192.168.162.2   99          0x80000CCD 0x7136
10.115.32.2     192.168.162.2   99          0x80000CCD 0xCCCB
10.115.46.3     192.168.162.3   338         0x8000425B 0x7C46
10.115.50.2     192.168.162.3   338         0x80000CCC 0x1A6A
10.115.64.129   192.168.162.1   1855        0x80000232 0xBDE4
10.115.64.133   192.168.162.1   1855        0x8000025D 0x4D25
10.115.64.138   192.168.162.3   845         0x80000233 0x692B
10.115.64.145   192.168.162.1   1855        0x80000260 0x5904
10.115.97.2     192.168.162.7   1275        0x800025FF 0xC535
10.115.98.3     192.168.162.7   1275        0x80002604 0x796A
10.115.104.4    192.168.162.3   338         0x80000CCD 0x4DF3
10.115.112.8    192.168.162.7   1275        0x80001F6A 0x2160
10.115.113.2    192.168.162.7   1275        0x800041B3 0xDD7C
10.115.113.66   192.168.162.7   1275        0x800041B2 0x5DBD
10.115.113.131  192.168.162.8   886         0x80001F6C 0xB987
10.115.113.194  192.168.162.7   1275        0x800041B2 0x5842
10.115.114.2    192.168.162.7   1275        0x800025FE 0x9099
10.115.114.130  192.168.162.7   1275        0x800041B2 0xCF0A
10.115.115.131  192.168.162.8   886         0x80001F6C 0x225D
10.115.116.2    192.168.162.7   1275        0x800041B2 0x3D5B
10.115.116.130  192.168.162.7   1275        0x800041B2 0x38DF
10.115.117.2    192.168.162.7   1275        0x800041B2 0x3265
10.115.117.130  192.168.162.7   1275        0x800041B2 0x2DE9
10.115.118.2    192.168.162.7   1275        0x800025FF 0xE084
10.115.118.130  192.168.162.7   1275        0x800041B1 0x24F2
10.115.119.2    192.168.162.7   1275        0x800025FF 0xD58E
10.115.120.2    192.168.162.7   1275        0x800041B2 0x1183
10.115.125.2    192.168.162.8   886         0x80000CD3 0x2AF8
172.20.1.4      192.168.162.7   1275        0x80002606 0x6276
192.168.76.3    192.168.162.7   1275        0x800041B2 0x2430
192.168.144.2   192.168.162.2   99          0x8000023B 0x94C1
192.168.161.3   192.168.162.1   1855        0x80000232 0xCE81
192.168.176.14  192.168.162.3   338         0x80000CCC 0x5EB0
192.168.177.3   192.168.162.2   99          0x80000CCD 0xBB5E

Is this correct or should I be able to see it on another router in the same area

Thansk

Alex

[Sudeep Valengattil · Accepted solution]

hi Alex,

As I said earlier, all routers with in an area would have the same topology database. That means, same entries.

The only thing i think u are missing is, you have to check it under the Router LSA for the advertising router.

show ip ospf database router <192.168.162.1>

Check the same command on the router in which u suspect its not there.

regards,

Sudeep