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![Cat3850-3#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Cat3850-3(config)#iox
Cat3850-3(config)#exit
Cat3850-3#
Cat3850-3#guestshell enable
Management Interface will be selected if configured
Please wait for completion
guestshell is in RUNNING state
Cat3850-3#
Cat3850-3#guestshell
[guestshell@guestshell ~]$
[guestshell@guestshell flash]$ pip list install
DEPRECATION: The default format will switch to columns in the future. You can use --format=(legacy|columns) (or define a
format=(legacy|columns) in your pip.conf under the [list] section) to disable this warning.
certifi (2017.7.27.1)
chardet (3.0.4)
idna (2.6)
pip (9.0.1)
requests (2.18.4)
setuptools (22.0.5)
urllib3 (1.22)
[guestshell@guestshell flash]$ vi sho-ver.py
[guestshell@guestshell flash]$
[guestshell@guestshell flash]$ cat sho-ver.py
#!/usr/bin/python
import cli
print cli.execute('show version')
[guestshell@guestshell flash]$
[guestshell@guestshell flash]$ python ./sho-ver.py | grep bin
System image file is "flash:cat3k_caa-universalk9.16.06.01.SPA.bin"
[guestshell@guestshell flash]$
Catalyst で bash
vi, Python
pip](https://image.slidesharecdn.com/20171010onboxprogrammability-171011044208/85/20171010-on-box-programmability-9-320.jpg)
![::cisco::eem::event_register_routing network 1.1.1.0/24 type all ge 24
import requests
import sys
import eem
ACCESS_TOKEN = ”<access_token>"
ROOM_ID = ”<room_id>"
def setHeaders():
accessToken_hdr = 'Bearer ' + ACCESS_TOKEN
spark_header = {'Authorization': accessToken_hdr, 'Content-Type': 'application/json; charset=utf-8'}
return spark_header
def postMsg(the_header,roomId,message):
message = '{"roomId":"' + roomId + '","text":"' + message +'"}'
uri = 'https://api.ciscospark.com/v1/messages'
resp = requests.post(uri, data=message, headers=the_header)
print resp
event = eem.event_reqinfo()
message = ’# RoutingTable Change Detected # -> ' + event['network'] + '-' + event['type'] + '-BY-' + event['protocol']
header=setHeaders()
postMsg(header,ROOM_ID,message)
routewatch.py 1. ルーティング変更イベントを検出したら…
2. 通知内容を作って…
3. 書く。以上。
https://qiita.com/kikuta1978/items/42526882b57eafe480ad](https://image.slidesharecdn.com/20171010onboxprogrammability-171011044208/85/20171010-on-box-programmability-12-320.jpg)
20171010 on-box programmability
- 1. On-box programmability Kazumasa Ikuta 2017.10.10 NetOpsCoding#5× ネットワークプログラマビリティ勉強会#13
- 2.
- 4. • Ciscoさん EEM（2003頃〜）… CLI or Tcl • YAMAHAさん Luaスクリプト（2009/10） … Lua • Juniperさん JUNOScript2.0 … XSLT/SLAX
- 5.
- 6. Junos で On-boxPython
- 7. Arista EoS EventManager (Condition Action)
- 8. Catalyst までも… #! /bin/bash LXC && 参考：Catalyst3850 IOS-XE 16.6.1
- 9. Cat3850-3#conf t Enter configurationcommands, one per line. End with CNTL/Z. Cat3850-3(config)#iox Cat3850-3(config)#exit Cat3850-3# Cat3850-3#guestshell enable Management Interface will be selected if configured Please wait for completion guestshell is in RUNNING state Cat3850-3# Cat3850-3#guestshell [guestshell@guestshell ~]$ [guestshell@guestshell flash]$ pip list install DEPRECATION: The default format will switch to columns in the future. You can use --format=(legacy|columns) (or define a format=(legacy|columns) in your pip.conf under the [list] section) to disable this warning. certifi (2017.7.27.1) chardet (3.0.4) idna (2.6) pip (9.0.1) requests (2.18.4) setuptools (22.0.5) urllib3 (1.22) [guestshell@guestshell flash]$ vi sho-ver.py [guestshell@guestshell flash]$ [guestshell@guestshell flash]$ cat sho-ver.py #!/usr/bin/python import cli print cli.execute('show version') [guestshell@guestshell flash]$ [guestshell@guestshell flash]$ python ./sho-ver.py | grep bin System image file is "flash:cat3k_caa-universalk9.16.06.01.SPA.bin" [guestshell@guestshell flash]$ Catalyst で bash vi, Python pip
- 10. cat3850(config-applet)#event ? application Applicationspecific event cli CLI event config Configuration policy event counter Counter event env Environmental event gold GOLD event identity Identity event interface Interface event ioswdsysmon IOS WDSysMon event ipsla IPSLA Event mat MAC address table event neighbor-discovery Neighbor Discovery event nf NF Event none Manually run policy event oir OIR event rf Redundancy Facility event routing Routing event rpc Remote Procedure Call event snmp SNMP event snmp-notification SNMP Notification Event snmp-object SNMP object event syslog Syslog event tag event tag identifier timer Timer event cat3850(config-applet)#action 100 ? add Add append Append to a variable break Break out of a conditional loop cli Execute a CLI command cns-event Send a CNS event comment add comment context Save or retrieve context information continue Continue to next loop iteration counter Modify a counter value decrement Decrement a variable divide Divide else else conditional elseif elseif conditional end end conditional block exit Exit from applet run file file operations force-switchover Force a software switchover foreach foreach loop gets get line of input from active tty handle-error On error action help Read/Set parser help buffer if if conditional increment Increment a variable info Obtain system specific information mail Send an e-mail multiply Multiply policy Run a pre-registered policy publish-event Publish an application specific event puts print data to active tty regexp regular expression match reload Reload system set Set a variable snmp-object-value Specify value for the SNMP get request snmp-trap Send an SNMP trap string string commands subtract Subtract syslog Log a syslog message track Read/Set a tracking object wait Wait for a specified amount of time while while loop 内部イベント検出 アクション &&
- 11. Demo https://www.youtube.com/watch?v=7Hla36hkwt0&t=4s EEM • ルーティングテーブル の経路変化でトリガー •Pythonに情報を提供 REST API OSPF 経路 Catalyst 3850Cisco 1900 × +ローカルファイルに記述
- 12. ::cisco::eem::event_register_routing network 1.1.1.0/24type all ge 24 import requests import sys import eem ACCESS_TOKEN = ”<access_token>" ROOM_ID = ”<room_id>" def setHeaders(): accessToken_hdr = 'Bearer ' + ACCESS_TOKEN spark_header = {'Authorization': accessToken_hdr, 'Content-Type': 'application/json; charset=utf-8'} return spark_header def postMsg(the_header,roomId,message): message = '{"roomId":"' + roomId + '","text":"' + message +'"}' uri = 'https://api.ciscospark.com/v1/messages' resp = requests.post(uri, data=message, headers=the_header) print resp event = eem.event_reqinfo() message = ’# RoutingTable Change Detected # -> ' + event['network'] + '-' + event['type'] + '-BY-' + event['protocol'] header=setHeaders() postMsg(header,ROOM_ID,message) routewatch.py 1. ルーティング変更イベントを検出したら… 2. 通知内容を作って… 3. 書く。以上。 https://qiita.com/kikuta1978/items/42526882b57eafe480ad
- 13. SiSi SiSi SiSiSiSiSiSi SiSiSiSiSiSiSiSiSiSiSiSi • ネットワーク越しではできないことができ、想像力が膨らむ！（装置内のAPIとか） • 装置やベンダーに依存する分、オープンに議論しにくい（かもしれない） • やってみると、けっこう楽しい（しかもわりとリアルに役立つかもしれない） まとめ：On-box プログラマビリティ 外部からの監視や自動化 • Zabbix • Python • Ansible • Netconf/YANG • … 内部からの監視や自動化 Shell Python EEM Shell Python EEM • On-box Python • コンテナ • イベント -> アクション • …
- 14.