RE: OSPF's router ID

From: Jonathan V Hays (jhays@jtan.com)
Date: Thu Feb 20 2003 - 00:59:26 GMT-3


1. Please post your configuration files.

2. There is no reason that 255 cannot be used in an IP address. It
depends on your subnet mask. For example, if the 7.255.4.251 address is
a /8 prefix then the network address is 7.0.0.0, the broadcast address
is 7.255.255.255, and all addresses in between are legal host addresses.

7.0.0.1
7.0.0.2
...
7.0.0.254
7.0.0.255 <- this is a legal host address
7.0.1.0
7.0.1.1
etc.

HTH

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Tom Young
Sent: Wednesday, February 19, 2003 8:46 PM
To: ccielab@groupstudy.com
Subject: OSPF's router ID

It is a part of my configuration of the router, the ospf's router ID is
7.255.4.251. But nobody had been set it, where the address from? And why
the 255 appeared in the address .It is very strange, who can teach it
for me? Thanks alot

show ip ospf database database-summary

             OSPF Router with ID (7.255.4.251) (Process ID
100)

Area 0 database summary
  LSA Type Count Delete Maxage
  Router 22 0 0
  Network 33 0 0
  Summary Net 11 0 0
  Summary ASBR 10 0 0
  Type-7 Ext 0 0 0
  Opaque Link 0 0 0
  Opaque Area 0 0 0
  Subtotal 76 0 0

Process 100 database summary
  LSA Type Count Delete Maxage
  Router 22 0 0
  Network 33 0 0
  Summary Net 11 0 0
  Summary ASBR 10 0 0
  Type-7 Ext 0 0 0
  Opaque Link 0 0 0
  Opaque Area 0 0 0
  Type-5 Ext 573 0 0
  Opaque AS 0 0 0
  Total 649 0 0



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