From: Walter Chen (wchen@xxxxxxxxx)
Date: Fri May 25 2001 - 15:54:29 GMT-3
Aaryn was right that PPP will always install a host route of the other side
of the serial (or ISDN) link and "no peer nei" command can remove this
route. This is because PPP is, after all, a point-to-point protocol. The
host route guarantees connectivity between the end points of the link, no
matter what address you put there. One side can be 10.1.1.1/24 and the other
side can be 200.2.2.2/28 and you can still ping each other. Of course, no
dynamic routing protocol will work across this link.
Walter
-----Original Message-----
From: Pickell, Aaryn [mailto:Aaryn.Pickell@getronics.com]
Sent: Friday, May 25, 2001 2:40 PM
To: 'sanjay'; ccielab@groupstudy.com
Subject: RE: PPP Encapsulation and OSPF
This isn't to do with OSPF. PPP will automatically install a host route for
the IP address of the other side of the link. Switching to HDLC doesn't do
this.
You can use "no peer neighbor-route" to disable this. I think.
Aaryn Pickell - CCNP ATM, CCDP, MCSE
Senior Engineer - Routing Protocols
Getronics Inc.
Direct: 713-394-1609
Email:aaryn.pickell@getronics.com
This e-mail message and any attachments are confidential and may be
privileged. If you are not the intended recipient, please notify me
immediately by replying to this message and please destroy all copies of
this message and attachments. Thank you.
> -----Original Message-----
> From: sanjay [mailto:ccienxtyear@hotmail.com]
> Sent: Friday, May 25, 2001 1:16 PM
> To: ccielab@groupstudy.com
> Subject: PPP Encapsulation and OSPF
>
>
> Hi,
>
> I have 2 routers back to back via serial connection. The
> encapsulation on the
> serial interface is PPP and the ip address is
> 172.17.59.166/29. When I do a
> show IP route, the route table shows 2 networks. One of them is
> 172.17.59.166/32 and the second 172.17.59.160/29 (this is the
> subnet between
> the 2 routers). My question is why this behaviour when
> running OSPF over PPP
> on serial links. As soon as I changed the encapsualtion to HDLC, the
> 172.17.59.166/32 is gone. Any ideas?
>
> thanks,
> Sanjay
> **Please read:http://www.groupstudy.com/list/posting.html
**Please read:http://www.groupstudy.com/list/posting.html
**Please read:http://www.groupstudy.com/list/posting.html
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:30:53 GMT-3