Two general schools of thought here:

a.) carry the MICE prefix in your IGP (OSPF, ISIS, etc) - not BGP, if you need it to recurse next hops. While this is the ‘easy button’, it has the unintended impact of allowing things on your network to directly target MICE IPs which should be avoided - the only things we want talking to directly to MICE IP’s are other BGP speaking routers to establish BGP sessions.

b.) set next-hop-self on your sessions on IXP facing router, so next hop is rewritten to the router itself towards the rest of your network. That way, you don’t need to carry the IX prefix in your IGP at all.


On Mar 30, 2020, at 5:56 PM, Abhi Devireddy <abhi@DEVIREDDY.COM> wrote:

And you would be right... I needed a downstream device to have that route.
It's been fixed now. Sorry for the extraneous alert.

I'll check that on our other session (AS3789) as well.

Abhi
From: MICE Discuss <MICE-DISCUSS@LISTS.IPHOUSE.NET> on behalf of Andrew Hoyos <hoyosa@GMAIL.COM>
Sent: Monday, March 30, 2020 5:52 PM
To: MICE-DISCUSS@LISTS.IPHOUSE.NET <MICE-DISCUSS@LISTS.IPHOUSE.NET>
Subject: Re: [MICE-DISCUSS] BGP alerts about AS 53740 (OPTBIT)
 
One of the most common reasons we see this is from ‘redist connected’ without any sanity check or prefix filter. 

On Mar 30, 2020, at 5:49 PM, Jeremy Lumby <jlumby@MNVOIP.COM> wrote:

Abhi,
 
                It is not as much a question about filtering prefixes, it is more a question of why your network would originate 206.108.255.0/24
 
Jeremy Lumby
Minnesota VoIP
9217 17th Ave S #216
Bloomington, MN 55425
M: 612-355-7740
D: 612-392-6814
F: 952-873-7425
 
 
 
From: MICE Discuss [mailto:MICE-DISCUSS@LISTS.IPHOUSE.NET] On Behalf Of Abhi Devireddy
Sent: Monday, March 30, 2020 5:29 PM
To: MICE-DISCUSS@LISTS.IPHOUSE.NET
Subject: Re: [MICE-DISCUSS] BGP alerts about AS 53740 (OPTBIT)
 
Frank,
That's really interesting. I'm sending QRator an unfiltered BGP feed and that might be triggering the error(?).
I'll try to filter my feed to QRator to deny the MICE prefix and see if that fixes it.
 
Open to suggestions as well.
Abhi
From: MICE Discuss <MICE-DISCUSS@LISTS.IPHOUSE.NET> on behalf of Frank Bulk <fbulk@MYPREMIERONLINE.COM>
Sent: Monday, March 30, 2020 5:11 PM
To: MICE-DISCUSS@LISTS.IPHOUSE.NET <MICE-DISCUSS@LISTS.IPHOUSE.NET>
Subject: [MICE-DISCUSS] BGP alerts about AS 53740 (OPTBIT)
 
Curious if anyone can make sense of this alert from QRator.  Are they suggesting OPTBIT is advertising MICE’s /24?
 
I’ve seen this come and go since Sunday night at 10:09 pm Central.
 
Frank 
 
From: Radar by Qrator <no-reply@qrator.net> 
Sent: Monday, March 30, 2020 2:49 AM

Subject: [BGP ALERT] [HIGH] <AS18883> Created Hijacks
 
Time: 30.03.2020 07:42:00 UTC
Created Hijacks 
New IPv4 incidents: 
Target Prefix
Target ASN
Affected prefix
Affected ASN
Severity
Propagation
High
1
AS Names involved in the incident:
AS18883 (FIBERNET-NETWORK-OPERATIONS-CENTER),  AS53740 (OPTBIT) 
Active IPv4 incident count: 16
 
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