From: Daniel Cisco Group Study (danielcgs@imc.net.au)
Date: Fri Jun 06 2003 - 21:19:37 GMT-3
Danny,
The two links belong to the "router link state" generated by the local router, with ID 200.0.0.2. The two links represent two different things:
This link describes a neighbor: (the neighbor is 200.0.0.4)
Link connected to: another Router (point-to-point)
(Link ID) Neighboring Router ID: 200.0.0.4
(Link Data) Router Interface address: 150.50.24.2
Number of TOS metrics: 0
TOS 0 Metrics: 64
This link describes a locally attached network:
Link connected to: a Stub Network
(Link ID) Network/subnet number: 150.50.24.0
(Link Data) Network Mask: 255.255.255.0
Number of TOS metrics: 0
TOS 0 Metrics: 64
If you area still confused, have a read of the following (quite a good read....):
http://www.cisco.com/en/US/tech/tk365/tk480/technologies_white_paper09186a0080094202.shtml
Daniel
-----Original Message-----
From: Danny.Andaluz@triaton-na.com [mailto:Danny.Andaluz@triaton-na.com]
Sent: Saturday, 7 June 2003 06:47
To: ccielab@groupstudy.com
Subject: RE: Show ip ospf database router self-originate
Anybody???
-----Original Message-----
From: Andaluz, Danilo, Triaton/NA
Sent: Thursday, June 05, 2003 10:55 PM
To: ccielab@groupstudy.com
Subject: Show ip ospf database router self-originate
Group,
In the below config and output of "show ip ospf data router self-originate", I'm not understanding something. If I have only one interface in Area 1, why does the router show 2 links? That first link in the output show ip ospf data router self-originate is 200.0.0.4. This is actually the loopback of the attached router. It is not self-originated.
interface Serial0
no ip address
encapsulation frame-relay
frame-relay lmi-type cisco
!
interface Serial0.24 point-to-point
ip address 150.50.24.2 255.255.255.0
frame-relay interface-dlci 104
!
router ospf 1
log-adjacency-changes
network 150.50.24.0 0.0.0.255 area 1
r2#sh ip ospf database router self-originate
OSPF Router with ID (200.0.0.2) (Process ID 1)
Router Link States (Area 1)
LS age: 484
Options: (No TOS-capability, DC)
LS Type: Router Links
Link State ID: 200.0.0.2
Advertising Router: 200.0.0.2
LS Seq Number: 80000013
Checksum: 0xA4C6
Length: 48
Area Border Router
Number of Links: 2
Link connected to: another Router (point-to-point)
(Link ID) Neighboring Router ID: 200.0.0.4
(Link Data) Router Interface address: 150.50.24.2
Number of TOS metrics: 0
TOS 0 Metrics: 64
Link connected to: a Stub Network
(Link ID) Network/subnet number: 150.50.24.0
(Link Data) Network Mask: 255.255.255.0
Number of TOS metrics: 0
TOS 0 Metrics: 64
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