CYMRU Bogon Peering

Steve Bertrand steve at ibctech.ca
Fri Feb 12 19:17:16 CST 2010


Seth Mattinen wrote:
> On 2/12/2010 15:03, Steve Bertrand wrote:
>> What time frame do you determine to be instability? The following is
>> from a box that has ~25 neighbours. Since the box was reloaded (6w3d
>> ago), I've had the same uptime with the Team Cymru neighbours as I do
>> with internal gear. I can't say that I've experienced any instability at
>> all. It is not uncommon for me to have noticed uptimes well beyond 30w.
>>
> 
> 
> Mine are not so good:
> 
> Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down
> State/PfxRcd
> 38.229.0.5      4 65333  115856  115859 16411814    0    0 01:33:51       30
> 
> 68.22.187.24    4        65333   26968   29671 16311293    0    0 2w4d
>          30
> 
> I see you have 68.22.187.24 in your list too, but my uptime is less. Are
> you using increased hold times?

No... I haven't changed anything. Here is my exact config from said box
(for that host):

router bgp 14270

!...snip...

 neighbor cymru-bogon peer-group
 neighbor cymru-bogon description Cymru BOGON peer group
 neighbor cymru-bogon ebgp-multihop 255
 neighbor cymru-bogon update-source Loopback99

!...snip...

 neighbor 68.22.187.24 remote-as 65333
 neighbor 68.22.187.24 peer-group cymru-bogon
 neighbor 68.22.187.24 description Cymru route-server #2

!...snip...

 address-family ipv4
  redistribute static route-map RTBH-OUT
  neighbor cymru-bogon prefix-list CYMRU-OUT out
  neighbor cymru-bogon route-map CYMRU-MAP-IN in
  neighbor cymru-bogon maximum-prefix 200

!...snip...

  neighbor 68.22.187.24 activate

!...snip...

ip community-list expanded BOGON permit 65333:888
ip community-list expanded BLACKHOLE permit 14270:600
ip as-path access-list 10 permit ^65333*

!...snip...

ip prefix-list CYMRU-OUT seq 5 deny 0.0.0.0/0 le 32

!...snip...

route-map CYMRU-MAP-IN permit 10
 description Null route BOGONS learnt from Cymru
 match community BOGON
 set community 14270:888 no-export additive
 set ip next-hop 192.0.2.2

!...snip...

route-map RTBH-OUT permit 10
 match tag 600
 set local-preference 500
 set origin igp
 set community 14270:600 no-export

!__END__

Do you have any other peers on the same int that are dropping as well?

Steve









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