ot; [EMAIL PROTECTED]
To: "Erick B." [EMAIL PROTECTED]; "Chuck Larrieu" [EMAIL PROTECTED];
"CCIE_Lab Groupstudy List" [EMAIL PROTECTED]; [EMAIL PROTECTED]
Sent: Thursday, November 30, 2000 11:26 AM
Subject: Re: OSPF Lab - DR behaviour with loopbacks WAS: RE: question abo
If you remove the router ospf configuration and paste
it back, OSPF will restart with a new router ID if you
have a new high IP address. You can only do this in a
test/non-production network environment though. I've
done this before in my labs because it is faster then
waiting for the router to
[EMAIL PROTECTED]; "'CCIE_Lab
Groupstudy List'" [EMAIL PROTECTED]; [EMAIL PROTECTED]
Sent: Friday, December 01, 2000 3:35 PM
Subject: Re: OSPF Lab - DR behaviour with loopbacks WAS: RE: question about
loopback interfaces
If you remove the router ospf configuration and paste
it back, O
.
Tony
- Original Message -
From: "Chuck Larrieu" [EMAIL PROTECTED]
To: "Louie Belt" [EMAIL PROTECTED]; "'CCIE_Lab Groupstudy List'"
[EMAIL PROTECTED]; [EMAIL PROTECTED]
Sent: Friday, December 01, 2000 1:39 AM
Subject: RE: OSPF Lab - DR behaviour with loopbacks WA
Chuck and others,
I've been following this conversation and it is a good
review.
Without a loopback interface, the OSPF RID (Router ID)
will be the highest IP address on the router when the
OSPF process becomes active. If that interface isn't
stable (say the highest IP is on a WAN circuit)
al Message -
From: "Erick B." [EMAIL PROTECTED]
To: "Chuck Larrieu" [EMAIL PROTECTED]; "CCIE_Lab Groupstudy List"
[EMAIL PROTECTED]; [EMAIL PROTECTED]
Cc: "Priscilla Oppenheimer" [EMAIL PROTECTED]
Sent: Thursday, November 30, 2000 8:04 PM
Subject: Re: OSPF Lab - D
To: Erick B.; Chuck Larrieu; CCIE_Lab Groupstudy List;
[EMAIL PROTECTED]
Subject: Re: OSPF Lab - DR behaviour with loopbacks WAS: RE: question
about loopback interfaces
I thought OSPF is suppose to converge whenever you have a change in the
route. I.e whenever any interface bounce.. regardless of the OSPF
TECTED]; "CCIE_Lab
Groupstudy List"
[EMAIL PROTECTED]; [EMAIL PROTECTED]
Cc: "Priscilla Oppenheimer" [EMAIL PROTECTED]
Sent: Thursday, November 30, 2000 8:04 PM
Subject: Re: OSPF Lab - DR behaviour with loopbacks
WAS: RE: question about
loopback interfaces
Chuck and
TED]; "Chuck Larrieu" [EMAIL PROTECTED];
"CCIE_Lab Groupstudy List" [EMAIL PROTECTED]; [EMAIL PROTECTED]
Sent: Thursday, November 30, 2000 11:26 AM
Subject: Re: OSPF Lab - DR behaviour with loopbacks WAS: RE: question about
loopback interfaces
I thought OSPF is suppose to converge
Much as I personally rant about cross posting the two lists, I believe this
one might be worth examination from all levels.
Recall the questions and answers about the purpose of the loopback
interface, particularly in OSPF. Among the answers proposed is that the
loopback, being always up,
As per david's msg, it would seem that I may be entirely mistaken! (like thats a first
:)
headed back to study :)
pete
*** REPLY SEPARATOR ***
On 11/29/2000 at 8:58 AM Peter Van Oene wrote:
One or two comments inset.
Chuck's Text
I would venture a guess that the BDR
would
One or two comments inset.
Chuck's Text
I would venture a guess that the BDR
would be promoted because even though there is an alternative route to the
DR loopback, hellos go only to adjacent routers, and the DR is no longer
adjacent.
Well, I proved my point. Under this scenario, when I unplug
Using addresses associated with loopback interfaces (with ospf) has two
advantage :
1) The lo interface is more stable than any physical interface. It is active
when a
router boots up, and it only fails if the entire router fails.
2) The network administrator usually prefer to use a predictable
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