Changes between Version 12 and Version 13 of Internal/OpenFlow/CLISetup

Timestamp:

Aug 13, 2009, 9:56:50 PM (15 years ago)

Author:

akoshibe

Comment:

—

Internal/OpenFlow/CLISetup

@@ -215 +215 @@
 }}}
 
+=== SNMP (8/13) ===
+For a explanation of SNMP: http://en.wikipedia.org/wiki/Simple_Network_Management_Protocol [[BR]]
+In the IP8800 guide: http://www.nec.co.jp/ip88n/s36_sw/html/cfguide2/index.html [[BR]]
+MIB references: http://www.alvestrand.no/objectid/
+==== Configuring the IP8800 ====
+Use of SNMP (Simple Network Management Protocol) is not set by default; you must create access lists with IP addresses allowed to request information as a manager device. In this case, an ACL is created for all the interfaces of SB9, eth1: 
+{{{
+!sw-sb09(config)# access-list 1 permit 10.19.0.10 0.0.0.0
+!sw-sb09(config)# access-list 1 permit 192.168.100.28 0.0.0.0
+!sw-sb09(config)# access-list 1 permit 192.168.1.28 0.0.0.0
+!sw-sb09(config)# access-list 1 permit 172.16.100.1 0.0.0.0
+!sw-sb09(config)# sh access-list 
+access-list 1 10 permit host 10.19.0.10
+access-list 1 20 permit host 192.168.100.28
+access-list 1 30 permit host 192.168.1.28
+access-list 1 40 permit host 172.16.100.1
+}}}
+
+to include it in the snmp access list, use the following command:
+{{{
+sw-sb09(config)# snmp-server community "NET" ro 1
+}}}
+where "NET" is the group name, "ro" is read-only, and "1" is the access list allowed. 
+
+==== Accessing MIBs on the IP8800 ====
+accessing it through the switch itsself is easy enough:
+{{{
+sw-sb09# snmp walk 1.3.6.1.2.1.1            
+
+Name: sysDescr.0
+Value: ALAXALA AX3640S AX-3640-48T2XW-L [AX3640S-48T2XW] Switching software Ver. 
+10.7 [OS-L3L]
+
+Name: sysObjectID.0
+Value: ax3640s
+
+Name: sysUpTime.0
+Value: 25724205
+
+Name: sysContact.0
+Value: 
+
+Name: sysName.0
+Value: sw-sb09
+
+Name: sysLocation.0
+Value: 
+
+Name: sysServices.0
+Value: 78
+}}}
+
+==== From a manager device - snmpwalk ==== 
+with snmpwalk from SB9:
+{{{
+root@sb9:~# snmpwalk -v 2c -c NET 172.16.100.10 1.3.6.1.2.1.1
+}}}
+{{{
+SNMPv2-MIB::sysDescr.0 = STRING: ALAXALA AX3640S AX-3640-48T2XW-L [AX3640S-48T2XW] Switching software Ver. 10.7 [OS-L3L]
+SNMPv2-MIB::sysObjectID.0 = OID: SNMPv2-SMI::enterprises.21839.1.2.11
+DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (26201570) 3 days, 0:46:55.70
+SNMPv2-MIB::sysContact.0 = STRING: 
+SNMPv2-MIB::sysName.0 = STRING: sw-sb09
+SNMPv2-MIB::sysLocation.0 = STRING: 
+SNMPv2-MIB::sysServices.0 = INTEGER: 78
+}}}
+==== Using Ruby scripts ====
+libsnmp reference: http://snmplib.rubyforge.org/doc/index.html 
+
+Ruby has libsnmp-ruby, a library for SNMP, available. SB9 didn't come with it, so it was installed:
+{{{
+apt-get install libsnmp-ruby
+}}}
+A messy irb test of the library:
+{{{
+irb(main):002:0> require 'snmp'
+irb(main):004:0> agent_hostname = "172.16.100.10"
+=> "172.16.100.10"
+irb(main):005:0> agent_comm = "NET"
+=> "NET"
+irb(main):007:0> s = SNMP::Manager.new(:Host => agent_hostname, :Community =>agent_comm, :Port => 161)
+=> #<SNMP::Manager:0xb79d5d98 @snmp_version=:SNMPv2c, @port=161, @transport=#<SNMP::UDPTransport:0xb79d5d5c @socket=#<UDPSocket:0xb79d5d34>>, @write_community="NET", @host="172.16.100.10", @retries=5, @community="NET", @mib=#<SNMP ... #this goes on for a while
+irb(main):009:0> response = s.get(["1.3.6.1.2.1.1.1.0"])
+=> #<SNMP::Response:0xb79c2d10 @error_index=0, @error_status=0, @request_id=856260869, @varbind_list=[#<SNMP::VarBind:0xb79c2900 @value="ALAXALA AX3640S AX-3640-48T2XW-L [AX3640S-48T2XW] Switching software Ver. 10.7 [OS-L3L]", @name=[1.3.6.1.2.1.1.1.0]>]>
+irb(main):035:0> rstring = "#{response.varbind_list.to_s}"
+=> "[name=1.3.6.1.2.1.1.1.0, value=ALAXALA AX3640S AX-3640-48T2XW-L [AX3640S-48T2XW] Switching software Ver. 10.7 [OS-L3L] (OCTET STRING)]"
+}}}
+
 [[BR]]
 [[BR]]