We commented out the following lines, to test if it is indeed an
End-of-RIB-marker that is acting up, and it turns out it isn't.
in rde.c line 2613 we commented out this:
if (peer->capa_received.restart && peer->capa_announced.restart)
peer_send_eor(peer, afi, safi);
This is the only place where the peer_send_eor function is called, and
commented out, the bug remains. Hence we assume it is not an eor message
that causes the issue... but an update generated somewhere else.
Because the empty update is sent out to all connected parties, I think
it has something to do with the 'announce all' capability.
On 3/8/09 10:48 PM, Arnoud Vermeer wrote:
> No, this is not the only session. Here is the full config, I hope it helps:
>
> Things start going wrong when I add the following to a v6 session:
> tcp md5sig password hondjes
>
> --
>
> AS 6777
> router-id 195.69.145.245
> fib-update no
> log updates
> listen on 195.69.145.245
> listen on 2001:7F8:1::A500:6777:4
>
> nexthop qualify via bgp
> transparent-as yes
>
> dump all in "/tmp/all-in-dump-%H%M" 300
> dump all out "/tmp/all-out-dump-%H%M" 300
>
> group "peers-rs-v6" {
> announce IPv6 unicast
> announce IPv4 none
> softreconfig in yes
> enforce neighbor-as yes
> set nexthop no-modify
> local-address 2001:7F8:1::A500:6777:4
>
> neighbor 2001:7f8:1::A500:1200:1 {
> descr "AS1200-v6-01"
> remote-as 1200
> announce all
> passive
> tcp md5sig password hondjes
> }
>
> neighbor 2001:7f8:1::A500:1200:2 {
> descr "AS1200-v6-02"
> remote-as 1200
> announce all
> passive
> }
>
> neighbor 2001:7f8:1::a504:8345:1 {
> descr "XSNEWS-v6-01"
> remote-as 48345
> announce all
> passive
> max-prefix 5
> }
>
> neighbor 2001:7f8:1::a504:8345:2 {
> descr "XSNEWS-v6-02"
> remote-as 48345
> announce all
> passive
> max-prefix 5
> }
>
> neighbor 2001:7F8:1::A503:4763:1 {
> descr "ABSOLUTE-v6-01"
> remote-as 34763
> announce all
> passive
> max-prefix 350
> }
>
> neighbor 2001:7F8:1::A501:6265:1 {
> descr "LEASEWEB-v6-01"
> remote-as 16265
> announce all
> passive
> max-prefix 115
> }
>
> neighbor 2001:7F8:1::A501:6265:2 {
> descr "LEASEWEB-v6-02"
> remote-as 16265
> announce all
> passive
> max-prefix 115
> }
>
> neighbor 2001:7F8:1::A504:1692:1 {
> descr "OPENCARRIER-v6-01"
> remote-as 41692
> announce all
> passive
> max-prefix 5
> }
>
> neighbor 2001:7f8:1::a500:559:1 {
> descr "SWITCH-v6-01"
> remote-as 559
> announce all
> passive
> max-prefix 252
> }
>
> }
>
> group "peers-rs-v4" {
> announce IPv6 none
> announce IPv4 unicast
> softreconfig in yes
> enforce neighbor-as yes
> set nexthop no-modify
>
> neighbor 195.69.144.1 {
> descr "AS1200-rtr-eun-01"
> remote-as 1200
> announce all
> passive
> max-prefix 5
> tcp md5sig password hondjes
> }
>
> neighbor 195.69.145.1 {
> descr "AS1200-rtr-glo-02"
> remote-as 1200
> announce all
> passive
> max-prefix 5
> }
>
> neighbor 195.69.144.229 {
> descr "XSNEWS-01"
> remote-as 48345
> announce all
> passive
> max-prefix 5
> }
>
> neighbor 195.69.145.229 {
> descr "XSNEWS-02"
> remote-as 48345
> announce all
> passive
> max-prefix 5
> }
>
> neighbor 195.69.144.168 {
> descr "AKAMAI-01"
> remote-as 20940
> announce all
> passive
> max-prefix 152
> }
>
> neighbor 195.69.145.208 {
> descr "AKAMAI-02"
> remote-as 20940
> announce all
> passive
> max-prefix 152
> }
>
> neighbor 195.69.144.33 {
> descr "SWITCH-01"
> remote-as 559
> announce all
> passive
> max-prefix 252
> }
>
> neighbor 195.69.145.105 {
> descr "ABSOLUTE-RADIO-01"
> remote-as 34763
> announce all
> passive
> max-prefix 350
> }
>
> neighbor 195.69.144.159 {
> descr "CAMBRIUM-01"
> remote-as 25596
> announce all
> passive
> max-prefix 15
> }
>
> neighbor 195.69.145.169 {
> descr "CAMBRIUM-02"
> remote-as 25596
> announce all
> passive
> max-prefix 15
> }
>
> neighbor 195.69.145.119 {
> descr "TNG-01"
> remote-as 13101
> announce all
> passive
> max-prefix 150
> }
>
> neighbor 195.69.144.215 {
> descr "LEASEWEB-01"
> remote-as 16265
> announce all
> passive
> max-prefix 115
> }
>
> neighbor 195.69.145.215 {
> descr "LEASEWEB-02"
> remote-as 16265
> announce all
> passive
> max-prefix 115
> }
>
> neighbor 195.69.145.136 {
> descr "IN2IP-01"
> remote-as 34141
> announce all
> passive
> max-prefix 8
> }
>
> neighbor 195.69.145.187 {
> descr "VOXEL-01"
> remote-as 29791
> announce all
> passive
> max-prefix 20
> }
>
> neighbor 195.69.145.221 {
> descr "OPENCARRIER-01"
> remote-as 41692
> announce all
> passive
> max-prefix 5
> }
>
> neighbor 195.69.144.101 {
> descr "HYVES-01"
> remote-as 47344
> announce all
> passive
> max-prefix 10
> }
>
> neighbor 195.69.145.185 {
> descr "GTS-CE-01"
> remote-as 5588
> announce all
> passive
> max-prefix 7
> }
>
> }
>
> # filter out prefixes longer than 24 or shorter than 8 bits
> deny from any
> allow from any inet prefixlen 8 - 24
> allow from any inet6 prefixlen 16 - 48
>
> # do not accept a default route
> deny from any inet prefix 0.0.0.0/0
> deny from any inet6 prefix ::/0
> deny from any inet6 prefix 2000::/3
>
> # filter bogus networks
> deny from any inet prefix 10.0.0.0/8 prefixlen>= 8
> deny from any inet prefix 172.16.0.0/12 prefixlen>= 12
> deny from any inet prefix 192.168.0.0/16 prefixlen>= 16
> deny from any inet prefix 169.254.0.0/16 prefixlen>= 16
> deny from any inet prefix 192.0.2.0/24 prefixlen>= 24
> deny from any inet prefix 224.0.0.0/4 prefixlen>= 4
> deny from any inet prefix 240.0.0.0/4 prefixlen>= 4
>
> deny from any inet6 prefix 3ffe::/16
> deny from any inet6 prefix 2001:db8::/32 prefixlen>= 32
> deny from any inet6 prefix ::/8
> deny from any inet6 prefix fe00::/9
> deny from any inet6 prefix ff00::/8
>
>
> On 3/8/09 9:18 PM, Henning Brauer wrote:
>
>> * Arnoud Vermeer<arnoud.verm...@ams-ix.net> [2009-03-08 21:06]:
>>
>>
>>> I didn't modify the source code in any way. I'm running the latest
>>> version from CVS on an amd64 machine and an i386 machine.
>>>
>>> I have the following configuration:
>>>
>>> AS 6777
>>> router-id 195.69.145.245
>>> fib-update no
>>> log updates
>>> listen on 195.69.145.245
>>> listen on 2001:7F8:1::A500:6777:4
>>>
>>> nexthop qualify via bgp
>>> transparent-as yes
>>>
>>> dump all in "/tmp/all-in-dump-%H%M" 300
>>> dump all out "/tmp/all-out-dump-%H%M" 300
>>>
>>> group "peers-rs-v6" {
>>> announce IPv6 unicast
>>> announce IPv4 none
>>> softreconfig in yes
>>> enforce neighbor-as yes
>>> set nexthop no-modify
>>> local-address 2001:7F8:1::A500:6777:4
>>>
>>> neighbor 2001:7f8:1::A500:1200:1 {
>>> descr "AS1200-v6-01"
>>> remote-as 1200
>>> announce all
>>> passive
>>> }
>>> }
>>>
>>>
>> so you only have that one neighbor, right?
>>
>>
>>
>>> The comment about the gracefull restart lead me to think about the
>>> following setting:
>>>
>>> announce capabilities (yes|no)
>>> If set to no, capability negotiation is disabled during
>>> the es-
>>> tablishment of the session. This can be helpful to connect
>>> to
>>> old or broken BGP implementations. The default is yes.
>>>
>>> Doesn't this troggle the graceful update? While reading the announce
>>>
>>>
>> no. you can't turn it on, yet. which reminds me that I wanted to add
>> buttons for specific capabilities...
>>
>>
>>
>>> part of the manual, I noticed the following:
>>> announce (all|none|self|default-route)
>>> If set to none, no UPDATE messages will be sent to the
>>> neighbor.
>>> If set to default-route, only the default route will be
>>> announced
>>> to the neighbor. If set to all, all generated UPDATE
>>> messages
>>> will be sent to the neighbor. This is usually used for
>>> transit
>>> AS's and IBGP peers. The default value for EBGP peers is
>>> self,
>>> which limits the sent UPDATE messages to announcements of
>>> the lo-
>>> cal AS. The default for IBGP peers is all.
>>>
>>> I also have announce all, in my configuration, because it is a route
>>> server I'm working on. Could this be the setting that is responsible for
>>> the UPDATE?
>>>
>>>
>> sure. but the root issue here is that we're apparently sending out
>> bullshit in this case for yet unknown reasons.
