BMP (BGP Monitoring Protocol) Testing by JANOGers -2, by Taiji Tsuchiya. A presentation given at APNIC 38 during APOPS 2.

1. BMP(BGP Monitoring Protocol) Testing by JANOGers
BMP Test Results
1 © BIGLOBE Inc. 2014
16 Sep 2014

2. Joint Test Members and their Motivation
BIGLOBE
An ISP in Japan which has about 3 million subscribers.
We have several POPs in JP, HK, SG and the US, and we connect with 150+
ASs globally.
Primary goal is to be able to detect BGP trouble and investigate quickly.
GREE
One of the biggest social game providers in the mobile phone market.
They hope more oriented towards routing optimization to enhance the user
experience. e.g. Troubleshoot convergence time and latency.
Cisco
The biggest network device vendor.
They want to know the operators needs and get feedback for
future development.
2 © BIGLOBE Inc. 2014
16 Sep 2014

3. Current BMP implementation(Router)
Juniper
JUNOS 9.5 and later BMP version1
http://www.juniper.net/techpubs/en_US/junos13.2/topics/topic-map/bgp-monitor
ing-protocol.html
JUNOS 13.3 and later BMP version3
http://www.juniper.net/techpubs/en_US/junos13.3/topics/task/configuration/bgp-monitoring-protocol-v3.html
Cisco
IOS-XE 3.11S and later BMP version3
http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/x
e-3s/irg-xe-3s-book/bgp-monitor-protocol.html
IOS 15.4(2)T and later BMP version3
http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/15-mt/irg-15-mt-book/bgp-monitor-protocol.html
IOS-XR will supports 5.2.2 (Mid of 2014)
3 © BIGLOBE Inc. 2014
16 Sep 2014

4. Current BMP implementation(Software)
BMP Receiver
https://code.google.com/p/bmpreceiver/source/list
Developed by a Google engineer involved in writing the Internet draft for BMP.
Supported BMP version 1 only.
We requested info on updates for version 3, but apparently, it crashes after
receiving static reports.
Forhadahmed/bmp
https://github.com/forhadahmed/bmp
Developed by a former Cisco engineer
Did not work properly in current state
Existing open source software did not support BMP version3.
Luckily, Cisco was able to provide us with internal tool for testing.
4 © BIGLOBE Inc. 2014
16 Sep 2014

5. Test network topology
AS64705 AS64600
ASR9000
ASR1000
(IOS XE 3.11S)
BMP Server
(Cisco Internal tool)
5 © BIGLOBE Inc. 2014
MX960
(JUNOS13.3R1.8)
Route Reflector
ASR1000
(IOS XE 3.11S)
the Internet
EBGP
AS2518
IBGP
IBGP
IBGP
Full
Route
IBGP
16 Sep 2014

6. Testing…
6 © BIGLOBE Inc. 2014
Test Period ：
16th to 27th of July 2014
Testing Place：
Cisco Tokyo Office
So nice ice cream
16 Sep 2014

7. Test result： Inbound filtering
MX960 (JUNOS13.3R1.8)
Loc-RIB-In Adj-RIB-In
BMP Server
Number of routes in Adj-RIBs-In: 80
Number of routes in Loc-RIB: 5
7 © BIGLOBE Inc. 2014
Route
Reflector
AS109
AS7521
AS55349
Inbound
Policy BGP
AS109 UPDATE
AS7521
AS55349
AS7521
AS55349
deny AS109$
EBGP
Number of route
80
Number of Route
80
Number of Route
5
16 Sep 2014

8. Test result ： Inbound filtering
MX960 In this situation, the MX960 is receiving 80 routes
(JUNOS13.3R1.8)
from the remote router and denying routes
Loc-RIB-In Adj-RIB-In
by inbound filtering.
According to the BMP server log, we could find
differences in the number of routes between
BMP Server
Adj-RIBs-in and Local-RIB.
Number of routes in Adj-RIBs-In: 80
Number of routes in Loc-RIB: 5
8 © BIGLOBE Inc. 2014
Route
Reflector
AS109
AS7521
AS55349
Inbound
Policy BGP
AS109 UPDATE
AS7521
AS55349
AS7521
AS55349
deny AS109$
EBGP
Number of route
80
Number of Route
80
Number of Route
5
16 Sep 2014

9. Test result: downed BGP session by remote router
ASR1000
(IOS XE 3.11S)
EBGP
9 © BIGLOBE Inc. 2014
MX960
(JUNOS13.3R1.8)
clear bgp
BMP Server
BMP msg count: Route-monitor=2 Stat-report=115 Peer-down=1 Peer-up=2
4byte-ASN
Last Peer-down: Thu Jun 26 14:03:20 2014
Remote system closed the session
NOTIFY received: cease/admin reset
16 Sep 2014

10. Test result: downed BGP session by remote router
The remote ASR1000
router ran the “clear bgp” command,
EBGP
and we (IOS XE saw 3.11S)
these behaviors.
We could find the peer-down message along with
the message of the down reason.
10 © BIGLOBE Inc. 2014
MX960
(JUNOS13.3R1.8)
clear ip bgp
BMP Server
BMP msg count: Route-monitor=2 Stat-report=115 Peer-down=1 Peer-up=2
4byte-ASN
Last Peer-down: Thu Jun 26 14:03:20 2014
Remote system closed the session
NOTIFY received: cease/admin reset
16 Sep 2014

11. Test result ：downed BGP session by local router
11 © BIGLOBE Inc. 2014
ASR1000
(IOS XE 3.11S)
ASR1000
(IOS XE 3.11S)
IBGP
Interface
shutdown
BMP Server
BMP msg count: Route-monitor=3 Stat-report=20 Peer-down=1 Peer-up=1
Last Peer-down: Thu Jun 26 14:58:36 2014
Local system closed the session
NOTIFY sent: hold timer expired
ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
00 15 03 04 00
16 Sep 2014

12. Test result ：downed BGP session by local router
12 © BIGLOBE Inc. 2014
ASR1000
(IOS XE 3.11S)
ASR1000
(IOS XE 3.11S)
IBGP
Interface
shutdown
BMP Server
BMP msg count: Route-monitor=3 Stat-report=20 Peer-down=1 Peer-up=1
Last Peer-down: Thu Jun 26 14:58:36 2014
Local system closed the session
NOTIFY sent: hold timer expired
ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
00 15 03 04 00
16 Sep 2014
The local router ran the "Interface shutdown"
command, and we saw these behaviors.
We could find that the local system closed the
session by hold timer.

13. Test result： max prefix down on MX960
MX960
(JUNOS13.3R1.8)
iBGP
max prefix: 50 BGP
13 © BIGLOBE Inc. 2014
UPDATE
max prefix
down
BMP Server
Route
Reflector
BMP msg count: Route-monitor=40 Stat-report=44 Peer-down=6 Peer-up=6
Last Peer-down: Thu Jun 26 16:28:50 2014
Local system closed the session
NOTIFY sent: cease/max prefixes reached
ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
00 1c 03 06 01 00 01 01 00 00 00 32
Number of
routes：
80
16 Sep 2014

14. Test result： max prefix down on MX960
Here, MX960
the MX960 received 80 routes from remote
router. (JUNOS13.3R1.8)
But MX max prefix is 50, iBGP
so the BGP
session was max prefix: shut.
50 BGP
14 © BIGLOBE Inc. 2014
UPDATE
max prefix
down
BMP Server
Route
Reflector
BMP msg count: Route-monitor=40 Stat-report=44 Peer-down=6 Peer-up=6
Last Peer-down: Thu Jun 26 16:28:50 2014
Local system closed the session
NOTIFY sent: cease/max prefixes reached
ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
00 1c 03 06 01 00 01 01 00 00 00 32
Number of
routes：
80
16 Sep 2014
We could find downed status and the reason
caused.

15. Test result： max prefix down on ASR1000
ASR1000
(IOS XE 3.11S)
max prefix: 50
15 © BIGLOBE Inc. 2014
EBGP
BGP
UPDATE
MX960
(JUNOS13.3R1.8)
Number of
routes：80
max prefix
down
BMP Server
BMP msg count: Route-monitor=21 Stat-report=11 Peer-down=1 Peer-up=2
4byte-ASN
Last Peer-down: Thu Jun 26 16:10:37 2014
Local system closed the session
FSM event code: 0
No NOTIFY sent
ASR 1000 IOS-XE 3.11S does not
support RFC4486
(BGP cease notification Messages)
sub-code1
（Maximum Number of Prefixes Reached）
*It supported from IOS-XR3.13
http://www.cisco.com/c/en/us/td/docs/ios-xml/
ios/iproute_bgp/configuration/xe-3s/irg-xe-3s-book/irg-max-prefix.
html
16 Sep 2014
} ???

16. Test result： max prefix down on ASR1000
This ASR1000
situation is completely the same as previous
scenario. (IOS XE 3.11S)
But the BMP server log reason was
unclear.
max prefix: 50
In our survey, this case was caused by no support
of RFC4486 (BGP cease notification messages) on IOS-XE
3.11S.
Cisco said that ASR1000 supported from IOS-XE3.13.
If you want to use BMP function, you should pay
attention for supported status of RFC4486, not only
BMP.
16 © BIGLOBE Inc. 2014
EBGP
BGP
UPDATE
MX960
(JUNOS13.3R1.8)
Number of
routes：80
max prefix
down
BMP Server
BMP msg count: Route-monitor=21 Stat-report=11 Peer-down=1 Peer-up=2
4byte-ASN
Last Peer-down: Thu Jun 26 16:10:37 2014
Local system closed the session
FSM event code: 0
No NOTIFY sent
ASR 1000 does not support
RFC4486
(BGP cease notification Messages)
sub-code1
（Maximum Number of Prefixes
Reached）
*It will support from 3.13
16 Sep 2014
} ???

17. The test result summary
We were able to successfully implement BMP
and see how we could benefit from its use.
It allows operators to obtain valuable information that
previously required debug commands and router login.
Most Japanese ISPs forbid the use of debug command,
because of the high CPU usage.
It helps us troubleshoot complex outages.
The data gathered is based on RFC-defined standards,
so the output is consistent among various vendors.
17 © BIGLOBE Inc. 2014
16 Sep 2014

18. The test result summary
Current Implementation of BMP
Supported Routers
In recent implementations, Juniper and Cisco routers
support BMP version3.
We are hoping more vendors will support BMP
Available Software
It lacked a server-side software that was compatible with
BMP version 3.
We need Superman
18 © BIGLOBE Inc. 2014
16 Sep 2014

19. Last on the Agenda
What is BMP(BGP Monitoring Protocol)?
BIGLOBE/GREE/CISCO BMP test result summary
After JANOG34…
19 © BIGLOBE Inc. 2014
16 Sep 2014

20. JANOG34 in Takamatsu
Day
July 16-18 2014
Host
STNet, Incorporated
Attendee
Tutorial and BoF: 93(remote 118)
Meeting 547
We presented these BMP test .
Some operators take interest in it
to troubleshoot without debug command.
20 © BIGLOBE Inc. 2014
Takamatsu
16 Sep 2014

21. Opinion to IETF
We will report to IETF IDR(Inter-Domain routing)
and GROW working group about the gap between
operators expectations and vendor implementation
Timestamp
Timestamp is not mandatory requirement but operator's
expectation is pretty high.
Security
Draft is not explicitly request security for BMP it's self.
We thought this would be implementation's issue between
server-side software and router and multi vendors.
21 © BIGLOBE Inc. 2014
16 Sep 2014

22. Implementation update
After JANOG34, some software engineers have been
working on developing BMP servers.
NTT R&D Wataru Ishida published BMPv3 software
Ryu BMP Sever
https://github.com/osrg/ryu
http://osrg.github.io/bmp/
22 © BIGLOBE Inc. 2014
16 Sep 2014

23. Future Plans
BMP
Further testing for installation of our network.
Developing an automation tool triggered by BMP
messages for our daily operation.
Find other new useful technologies
We want to find and test new technologies with JANOG
operators.
23 © BIGLOBE Inc. 2014
16 Sep 2014