From: Scott Morris (swm@emanon.com)
Date: Wed Jul 09 2008 - 22:55:55 ART
Why would it be a bug? I suppose it could be, but more likely a typo in
someone's route-map changing the next hop information!
If I had to guess, that's someone's router-id for bgp, and they thought that
had to be set as the next hop even though the router-id is a 32-bit number,
which is not necessarily (and definitely not in this case) a valid IP
address.
HTH,
Scott Morris, CCIE4 #4713, JNCIE-M #153, JNCIS-ER, CISSP, et al.
CCSI/JNCI-M/JNCI-ER
Senior CCIE Instructor
smorris@internetworkexpert.com
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-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Mark
Stephanus Chandra
Sent: Wednesday, July 09, 2008 9:48 PM
To: swm@emanon.com; 'Dennis Worth'; 'Cisco certification'
Subject: RE: BGP Message Unknown
Hi Scott,
Thanks for your reply
so, we assume this issue rising because of IOS Bug or what ?
Mark Stephanus Chandra
IT Consultant
-----Original Message-----
From: Scott Morris [mailto:swm@emanon.com]
Sent: 10 Juli 2008 7:53
To: 'Mark Stephanus Chandra'; 'Dennis Worth'; 'Cisco certification'
Subject: RE: BGP Message Unknown
A martian is any address that "just doesn't belong here"! :) You can't
advertise that route, but you may have a route-map attempting to set that as
the next hop (typo?)
Scott
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Mark
Stephanus Chandra
Sent: Wednesday, July 09, 2008 8:44 PM
To: 'Dennis Worth'; 'Cisco certification'
Subject: RE: BGP Message Unknown
Hi Dennis,
But I believe I don't advertise this route. Where this route come from ? And
what is a martian address space ?
Thanks
Regards
Mark Stephanus Chandra
IT Consultant
From: Dennis Worth [mailto:dennis.worth@gmail.com]
Sent: 10 Juli 2008 1:24
To: Cisco certification; Mark Stephanus Chandra
Subject: Fwd: BGP Message Unknown
Mark,
I believe the message is stating that the (254.192.2.52
<http://254.192.2.52/> ) is a martian address space. Which should not be
globaly advertised. Check out the this link.
http://www.ietf.org/rfc/rfc3704.txt
Someone correct me if I'm wrong.
thanks,
On Wed, Jul 9, 2008 at 10:54 AM, Mark Stephanus Chandra
<mark.chandra@gmail.com> wrote:
Dear CCIE Lab Group,
Can anyone give me explanation what is the meaning of this message :
%BGP-6-NEXTHOP: Invalid next hop (254.192.2.52) received from FEC0:234::4:
martian next hop
I'm currently establishing bgp ipv6 using frame-relay.
R4----FR DLCI 403 ----------FR DLCI 304-----R3
I already map the link local address also to each of the router but still
have the same mesaage. But route advertisement on both router looking good
though. No problem with route exchange. Just wondering what is this message
all about.
And Anyway, do I have to map link local address for bgp ipv6 over frame
relay ?
Have tried with no mapping link local address, still works fine
R3 Configuration :
router bgp 300
no synchronization
bgp router-id 150.1.3.3
bgp log-neighbor-changes
neighbor 162.1.0.2 remote-as 300
neighbor 162.1.0.4 remote-as 100
neighbor 162.1.0.4 remove-private-as
neighbor 162.1.13.1 remote-as 200
neighbor 162.1.38.8 remote-as 65002
neighbor FEC0:234::4 remote-as 100
no auto-summary
!
address-family ipv6
neighbor FEC0:234::4 activate
exit-address-family
R4 Configuration :
router bgp 100
no synchronization
bgp router-id 150.1.4.4
bgp log-neighbor-changes
neighbor 2001:204:12:1::254 remote-as 54
neighbor 150.1.5.5 remote-as 500
neighbor 150.1.5.5 ebgp-multihop 10
neighbor 150.1.5.5 update-source Loopback0
neighbor 162.1.0.3 remote-as 300
neighbor 204.12.1.254 remote-as 54
neighbor FEC0:234::3 remote-as 300
no auto-summary
!
address-family ipv6
neighbor 2001:204:12:1::254 activate
neighbor FEC0:234::3 activate
exit-address-family
Thanks all for looking into this
Mark Stephanus Chandra
IT Consultant
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