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SNMP4SDN User Guide

Overview

We propose a southbound plugin that can control the off-the-shelf commodity Ethernet switches for the purpose of building SDN using Ethernet switches. For Ethernet switches, forwarding table, VLAN table, and ACL are where one can install flow configuration on, and this is done via SNMP and CLI in the proposed plugin. In addition, some settings required for Ethernet switches in SDN, e.g., disabling STP and flooding, are proposed.

SNMP4SDN as an OpenDaylight southbound plugin

SNMP4SDN as an OpenDaylight southbound plugin

Configuration

Just follow the steps:

Prepare the switch list database file

A sample is here, and we suggest to save it as /etc/snmp4sdn_swdb.csv so that SNMP4SDN Plugin can automatically load this file. Note that the first line is title and should not be removed.

Prepare the vendor-specific configuration file

A sample is here, and we suggest to save it as /etc/snmp4sdn_VendorSpecificSwitchConfig.xml so that SNMP4SDN Plugin can automatically load this file.

Install SNMP4SDN Plugin

If using SNMP4SDN Plugin provided in OpenDaylight release, just do the following from the Karaf CLI:

feature:repo-add mvn:org.opendaylight.snmp4sdn/features-snmp4sdn/0.8.1-SNAPSHOT/xml/features
feature:install odl-snmp4sdn-all

Troubleshooting

Installation Troubleshooting

Feature installation failure

When trying to install a feature, if the following failure occurs:

Error executing command: Could not start bundle ...
Reason: Missing Constraint: Require-Capability: osgi.ee; filter="(&(osgi.ee=JavaSE)(version=1.7))"

A workaround: exit Karaf, and edit the file <karaf_directory>/etc/config.properties, remove the line ${services-${karaf.framework}} and the “, " in the line above.

Runtime Troubleshooting

Problem starting SNMP Trap Interface

It is possible to get the following exception during controller startup. (The error would not be printed in Karaf console, one may see it in <karaf_directory>/data/log/karaf.log)

2014-01-31 15:00:44.688 CET [fileinstall-./plugins] WARN  o.o.snmp4sdn.internal.SNMPListener - Problem starting SNMP Trap Interface: {}
 java.net.BindException: Permission denied
        at java.net.PlainDatagramSocketImpl.bind0(Native Method) ~[na:1.7.0_51]
        at java.net.AbstractPlainDatagramSocketImpl.bind(AbstractPlainDatagramSocketImpl.java:95) ~[na:1.7.0_51]
        at java.net.DatagramSocket.bind(DatagramSocket.java:376) ~[na:1.7.0_51]
        at java.net.DatagramSocket.<init>(DatagramSocket.java:231) ~[na:1.7.0_51]
        at java.net.DatagramSocket.<init>(DatagramSocket.java:284) ~[na:1.7.0_51]
        at java.net.DatagramSocket.<init>(DatagramSocket.java:256) ~[na:1.7.0_51]
        at org.snmpj.SNMPTrapReceiverInterface.<init>(SNMPTrapReceiverInterface.java:126) ~[org.snmpj-1.4.3.jar:na]
        at org.snmpj.SNMPTrapReceiverInterface.<init>(SNMPTrapReceiverInterface.java:99) ~[org.snmpj-1.4.3.jar:na]
        at org.opendaylight.snmp4sdn.internal.SNMPListener.<init>(SNMPListener.java:75) ~[bundlefile:na]
        at org.opendaylight.snmp4sdn.core.internal.Controller.start(Controller.java:174) [bundlefile:na]
...

This indicates that the controller is being run as a user which does not have sufficient OS privileges to bind the SNMPTRAP port (162/UDP)

Switch list file missing

The SNMP4SDN Plugin needs a switch list file, which is necessary for topology discovery and should be provided by the administrator (so please prepare one for the first time using SNMP4SDN Plugin, here is the sample). The default file path is /etc/snmp4sdn_swdb.csv. SNMP4SDN Plugin would automatically load this file and start topology discovery. If this file is not ready there, the following message like this will pop up:

2016-02-02 04:21:52,476 | INFO| Event Dispatcher | CmethUtil                        | 466 - org.opendaylight.snmp4sdn - 0.3.0.SNAPSHOT | CmethUtil.readDB() err: {}
java.io.FileNotFoundException: /etc/snmp4sdn_swdb.csv (No such file or directory)
    at java.io.FileInputStream.open0(Native Method)[:1.8.0_65]
    at java.io.FileInputStream.open(FileInputStream.java:195)[:1.8.0_65]
    at java.io.FileInputStream.<init>(FileInputStream.java:138)[:1.8.0_65]
    at java.io.FileInputStream.<init>(FileInputStream.java:93)[:1.8.0_65]
    at java.io.FileReader.<init>(FileReader.java:58)[:1.8.0_65]
    at org.opendaylight.snmp4sdn.internal.util.CmethUtil.readDB(CmethUtil.java:66)
    at org.opendaylight.snmp4sdn.internal.util.CmethUtil.<init>(CmethUtil.java:43)
...

Configuration

Just follow the steps:

1. Prepare the switch list database file

A sample is here, and we suggest to save it as /etc/snmp4sdn_swdb.csv so that SNMP4SDN Plugin can automatically load this file.

Note

The first line is title and should not be removed.

2. Prepare the vendor-specific configuration file

A sample is here, and we suggest to save it as /etc/snmp4sdn_VendorSpecificSwitchConfig.xml so that SNMP4SDN Plugin can automatically load this file.

3. Install SNMP4SDN Plugin

If using SNMP4SDN Plugin provided in OpenDaylight release, just do the following:

Launch Karaf in Linux console:

cd <Boron_controller_directory>/bin
(for example, cd distribution-karaf-x.x.x-Boron/bin)
./karaf

Then in Karaf console, execute:

feature:install odl-snmp4sdn-all

4. Load switch list

For initialization, we need to feed SNMP4SDN Plugin the switch list. Actually SNMP4SDN Plugin automatically try to load the switch list at /etc/snmp4sdn_swdb.csv if there is. If so, this step could be skipped. In Karaf console, execute:

snmp4sdn:ReadDB <switch_list_path>
(For example, snmp4sdn:ReadDB /etc/snmp4sdn_swdb.csv)
(in Windows OS, For example, snmp4sdn:ReadDB D://snmp4sdn_swdb.csv)

A sample is here, and we suggest to save it as /etc/snmp4sdn_swdb.csv so that SNMP4SDN Plugin can automatically load this file.

Note

The first line is title and should not be removed.

5. Show switch list

snmp4sdn:PrintDB

Tutorial

Topology Service

Execute topology discovery

The SNMP4SDN Plugin automatically executes topology discovery on startup. One may use the following commands to invoke topology discovery manually. Note that you may need to wait for seconds for itto complete.

Note

Currently, one needs to manually execute snmp4sdn:TopoDiscover first (just once), then later the automatic topology discovery can be successful. If switches change (switch added or removed), snmp4sdn:TopoDiscover is also required. A future version will fix it to eliminate these requirements.

snmp4sdn:TopoDiscover

If one like to discover all inventory (i.e. switches and their ports) but not edges, just execute “TopoDiscoverSwitches”:

snmp4sdn:TopoDiscoverSwitches

If one like to only discover all edges but not inventory, just execute “TopoDiscoverEdges”:

snmp4sdn:TopoDiscoverEdges

You can also trigger topology discovery via the REST API by using curl from the Linux console (or any other REST client):

curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://localhost:8181/restconf/operations/topology:rediscover

You can change the periodic topology discovery interval via a REST API:

curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://localhost:8181/restconf/operations/topology:set-discovery-interval -d "{"input":{"interval-second":'<interval_time>'}}"
For example, set the interval as 15 seconds:
curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://localhost:8181/restconf/operations/topology:set-discovery-interval -d "{"input":{"interval-second":'15'}}"

Show the topology

SNMP4SDN Plugin supports to show topology via REST API:

  • Get topology

    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://localhost:8181/restconf/operations/topology:get-edge-list
    
  • Get switch list

    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://localhost:8181/restconf/operations/topology:get-node-list
    
  • Get switches’ ports list

    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://localhost:8181/restconf/operations/topology:get-node-connector-list
    
  • The three commands above are just for user to get the latest topology discovery result, it does not trigger SNMP4SDN Plugin to do topology discovery.

  • To trigger SNMP4SDN Plugin to do topology discover, as described in aforementioned Execute topology discovery.

Flow configuration

FDB configuration

SNMP4SDN supports to add entry on FDB table via REST API:

  • Get FDB table

    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://<controller_ip_address>:8181/restconf/operations/fdb:get-fdb-table -d "{input:{"node-id":<switch-mac-address-in-number>}}"
    
    For example:
    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://localhost:8181/restconf/operations/fdb:get-fdb-table -d "{input:{"node-id":158969157063648}}"
    
  • Get FDB table entry

    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://<controller_ip_address>:8181/restconf/operations/fdb:get-fdb-entry -d "{input:{"node-id":<switch-mac-address-in-number>, "vlan-id":<vlan-id-in-number>, "dest-mac-addr":<destination-mac-address-in-number>}}"
    
    For example:
    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://localhost:8181/restconf/operations/fdb:get-fdb-entry -d "{input:{"node-id":158969157063648, "vlan-id":1, "dest-mac-addr":158969157063648}}"
    
  • Set FDB table entry

    (Notice invalid value: (1) non unicast mac (2) port not in the VLAN)

    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://<controller_ip_address>:8181/restconf/operations/fdb:set-fdb-entry -d "{input:{"node-id":<switch-mac-address-in-number>, "vlan-id":<vlan-id-in-number>, "dest-mac-addr":<destination-mac-address-in-number>, "port":<port-in-number>, "type":'<type>'}}"
    
    For example:
    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://localhost:8181/restconf/operations/fdb:set-fdb-entry -d "{input:{"node-id":158969157063648, "vlan-id":1, "dest-mac-addr":187649984473770, "port":23, "type":'MGMT'}}"
    
  • Delete FDB table entry

    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://<controller_ip_address>:8181/restconf/operations/fdb:del-fdb-entry -d "{input:{"node-id":<switch-mac-address-in-number>, "vlan-id":<vlan-id-in-number>, "dest-mac-addr":<destination-mac-address-in-number>}}"
    
    For example:
    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://localhost:8181/restconf/operations/fdb:del-fdb-entry -d "{input:{"node-id":158969157063648, "vlan-id":1, "dest-mac-addr":187649984473770}}"
    

VLAN configuration

SNMP4SDN supports to add entry on VLAN table via REST API:

  • Get VLAN table

    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://<controller_ip_address>:8181/restconf/operations/vlan:get-vlan-table -d "{input:{node-id:<switch-mac-address-in-number>}}"
    
    For example:
    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://localhost:8181/restconf/operations/vlan:get-vlan-table -d "{input:{node-id:158969157063648}}"
    
  • Add VLAN

    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://<controller_ip_address>:8181/restconf/operations/vlan:add-vlan -d "{"input":{"node-id":<switch-mac-address-in-number>, "vlan-id":<vlan-id-in-number>, "vlan-name":'<vlan-name>'}}"
    
    For example:
    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://localhost:8181/restconf/operations/vlan:add-vlan -d "{"input":{"node-id":158969157063648, "vlan-id":123, "vlan-name":'v123'}}"
    
  • Delete VLAN

    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://<controller_ip_address>:8181/restconf/operations/vlan:delete-vlan -d "{"input":{"node-id":<switch-mac-address-in-number>, "vlan-id":<vlan-id-in-number>}}"
    
    For example:
    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://localhost:8181/restconf/operations/vlan:delete-vlan -d "{"input":{"node-id":158969157063648, "vlan-id":123}}"
    
  • Add VLAN and set ports

    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://<controller_ip_address>:8181/restconf/operations/vlan:add-vlan-and-set-ports -d "{"input":{"node-id":<switch-mac-address-in-number>, "vlan-id":<vlan-id-in-number>, "vlan-name":'<vlan-name>', "tagged-port-list":'<tagged-ports-separated-by-comma>', "untagged-port-list":'<untagged-ports-separated-by-comma>'}}"
    
    For example:
    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://localhost:8181/restconf/operations/vlan:add-vlan-and-set-ports -d "{"input":{"node-id":158969157063648, "vlan-id":123, "vlan-name":'v123', "tagged-port-list":'1,2,3', "untagged-port-list":'4,5,6'}}"
    
  • Set VLAN ports

    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://<controller_ip_address>:8181/restconf/operations/vlan:set-vlan-ports -d "{"input":{"node-id":<switch-mac-address-in-number>, "vlan-id":<vlan-id-in-number>, "tagged-port-list":'<tagged-ports-separated-by-comma>', "untagged-port-list":'<untagged-ports-separated-by-comma>'}}"
    
    For example:
    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://localhost:8181/restconf/operations/vlan:set-vlan-ports -d "{"input":{"node-id":"158969157063648", "vlan-id":"123", "tagged-port-list":'4,5', "untagged-port-list":'2,3'}}"
    

ACL configuration

SNMP4SDN supports to add flow on ACL table via REST API. However, it is so far only implemented for the D-Link DGS-3120 switch.

ACL configuration via CLI is vendor-specific, and SNMP4SDN will support configuration with vendor-specific CLI in future release.

To do ACL configuration using the REST APIs, use commands like the following:

  • Clear ACL table

    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://<controller_ip_address>:8181/restconf/operations/acl:clear-acl-table -d "{"input":{"nodeId":<switch-mac-address-in-number>}}"
    
    For example:
    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://localhost:8181/restconf/operations/acl:clear-acl-table -d "{"input":{"nodeId":158969157063648}}"
    
  • Create ACL profile (IP layer)

    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://<controller_ip_address>:8181/restconf/operations/acl:create-acl-profile -d "{input:{"nodeId":<switch-mac-address-in-number>,"profile-id":<profile_id_in_number>,"profile-name":'<profile_name>',"acl-layer":'IP',"vlan-mask":<vlan_mask_in_number>,"src-ip-mask":'<src_ip_mask>',"dst-ip-mask":"<destination_ip_mask>"}}"
    
    For example:
    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://localhost:8181/restconf/operations/acl:create-acl-profile -d "{input:{"nodeId":158969157063648,"profile-id":1,"profile-name":'profile_1',"acl-layer":'IP',"vlan-mask":1,"src-ip-mask":'255.255.0.0',"dst-ip-mask":'255.255.255.255'}}"
    
  • Create ACL profile (MAC layer)

    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://<controller_ip_address>:8181/restconf/operations/acl:create-acl-profile -d "{input:{"nodeId":<switch-mac-address-in-number>,"profile-id":<profile_id_in_number>,"profile-name":'<profile_name>',"acl-layer":'ETHERNET',"vlan-mask":<vlan_mask_in_number>}}"
    
    For example:
    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://localhost:8181/restconf/operations/acl:create-acl-profile -d "{input:{"nodeId":158969157063648,"profile-id":2,"profile-name":'profile_2',"acl-layer":'ETHERNET',"vlan-mask":4095}}"
    
  • Delete ACL profile

    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://localhost:8181/restconf/operations/acl:del-acl-profile -d "{input:{"nodeId":<switch-mac-address-in-number>,"profile-id":<profile_id_in_number>}}"
    
    For example:
    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://localhost:8181/restconf/operations/acl:del-acl-profile -d "{input:{"nodeId":158969157063648,"profile-id":1}}"
    
    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://<controller_ip_address>:8181/restconf/operations/acl:del-acl-profile -d "{input:{"nodeId":<switch-mac-address-in-number>,"profile-name":"<profile_name>"}}"
    
    For example:
    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://localhost:8181/restconf/operations/acl:del-acl-profile -d "{input:{"nodeId":158969157063648,"profile-name":'profile_2'}}"
    
  • Set ACL rule

    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://<controller_ip_address>:8181/restconf/operations/acl:set-acl-rule -d "{input:{"nodeId":<switch-mac-address-in-number>,"profile-id":<profile_id_in_number>,"profile-name":'<profile_name>',"rule-id":<rule_id_in_number>,"port-list":[<port_number>,<port_number>,...],"acl-layer":'<acl_layer>',"vlan-id":<vlan_id_in_number>,"src-ip":"<src_ip_address>","dst-ip":'<dst_ip_address>',"acl-action":'<acl_action>'}}"
    (<acl_layer>: IP or ETHERNET)
    (<acl_action>: PERMIT as permit, DENY as deny)
    
    For example:
    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://localhost:8181/restconf/operations/acl:set-acl-rule -d "{input:{"nodeId":158969157063648,"profile-id":1,"profile-name":'profile_1',"rule-id":1,"port-list":[1,2,3],"acl-layer":'IP',"vlan-id":2,"src-ip":'1.1.1.1',"dst-ip":'2.2.2.2',"acl-action":'PERMIT'}}"
    
  • Delete ACL rule

    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://<controller_ip_address>:8181/restconf/operations/acl:del-acl-rule -d "{input:{"nodeId":<switch-mac-address-in-number>,"profile-id":<profile_id_in_number>,"profile-name":'<profile_name>',"rule-id":<rule_id_in_number>}}"
    
    For example:
    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://localhost:8181/restconf/operations/acl:del-acl-rule -d "{input:{"nodeId":158969157063648,"profile-id":1,"profile-name":'profile_1',"rule-id":1}}"
    

Special configuration

SNMP4SDN supports setting the following special configurations via REST API:

  • Set STP port state

    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://<controller_ip_address>:8181/restconf/operations/config:set-stp-port-state -d "{input:{"node-id":<switch-mac-address-in-number>, "port":<port_number>, enable:<true_or_false>}}"
    (true: enable, false: disable)
    
    For example:
    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://localhost:8181/restconf/operations/config:set-stp-port-state -d "{input:{"node-id":158969157063648, "port":2, enable:false}}"
    
  • Get STP port state

    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://<controller_ip_address>:8181/restconf/operations/config:get-stp-port-state -d "{input:{"node-id":<switch-mac-address-in-number>, "port":<port_number>}}"
    
    For example:
    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://localhost:8181/restconf/operations/config:get-stp-port-state -d "{input:{"node-id":158969157063648, "port":2}}"
    
  • Get STP port root

    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://<controller_ip_address>:8181/restconf/operations/config:get-stp-port-root -d "{input:{"node-id":<switch-mac-address-in-number>, "port":<port_number>}}"
    
    For example:
    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://localhost:8181/restconf/operations/config:get-stp-port-root -d "{input:{"node-id":158969157063648, "port":2}}"
    
  • Enable STP

    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://<controller_ip_address>:8181/restconf/operations/config:enable-stp -d "{input:{"node-id":<switch-mac-address-in-number>}}"
    
    For example:
    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://localhost:8181/restconf/operations/config:enable-stp -d "{input:{"node-id":158969157063648}}"
    
  • Disable STP

    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://<controller_ip_address>:8181/restconf/operations/config:disable-stp -d "{input:{"node-id":<switch-mac-address-in-number>}}"
    
    For example:
    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://localhost:8181/restconf/operations/config:disable-stp -d "{input:{"node-id":158969157063648}}"
    
  • Get ARP table

    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://<controller_ip_address>:8181/restconf/operations/config:get-arp-table -d "{input:{"node-id":<switch-mac-address-in-number>}}"
    
    For example:
    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://localhost:8181/restconf/operations/config:get-arp-table -d "{input:{"node-id":158969157063648}}"
    
  • Set ARP entry

    (Notice to give IP address with subnet prefix)

    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://<controller_ip_address>:8181/restconf/operations/config:set-arp-entry -d "{input:{"node-id":<switch-mac-address-in-number>, "ip-address":'<ip_address>', "mac-address":<mac_address_in_number>}}"
    
    For example:
    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://localhost:8181/restconf/operations/config:set-arp-entry -d "{input:{"node-id":158969157063648, "ip-address":'10.217.9.9', "mac-address":1}}"
    
  • Get ARP entry

    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://<controller_ip_address>:8181/restconf/operations/config:get-arp-entry -d "{input:{"node-id":<switch-mac-address-in-number>, "ip-address":'<ip_address>'}}"
    
    For example:
    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://localhost:8181/restconf/operations/config:get-arp-entry -d "{input:{"node-id":158969157063648, "ip-address":'10.217.9.9'}}"
    
  • Delete ARP entry

    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://<controller_ip_address>:8181/restconf/operations/config:delete-arp-entry -d "{input:{"node-id":<switch-mac-address-in-number>, "ip-address":'<ip_address>'}}"
    
    For example:
    curl --user "admin":"admin" -H "Accept: application/json" -H "Content-type: application/json" -X POST http://localhost:8181/restconf/operations/config:delete-arp-entry -d "{input:{"node-id":158969157063648, "ip-address":'10.217.9.9'}}"
    

Using Postman to invoke REST API

Besides using the curl tool to invoke REST API, like the examples aforementioned, one can also use GUI tool like Postman for better data display.

Example: Get VLAN table using Postman

As the screenshot shown below, one needs to fill in required fields.

URL:
http://<controller_ip_address>:8181/restconf/operations/vlan:get-vlan-table

Accept header:
application/json

Content-type:
application/json

Body:
{input:{"node-id":<node_id>}}
for example:
{input:{"node-id":158969157063648}}
Example: Get VLAN table using Postman

Example: Get VLAN table using Postman

Multi-vendor support

So far the supported vendor-specific configurations:

  • Add VLAN and set ports
  • (More functions are TBD)

The SNMP4SDN Plugin would examine whether the configuration is described in the vendor-specific configuration file. If yes, the configuration description would be adopted, otherwise just use the default configuration. For example, adding VLAN and setting the ports is supported via SNMP standard MIB. However we found some special cases, for example, certain Accton switch requires to add VLAN first and then allows to set the ports. So one may describe this in the vendor-specific configuration file.

A vendor-specific configuration file sample is here, and we suggest to save it as /etc/snmp4sdn_VendorSpecificSwitchConfig.xml so that SNMP4SDN Plugin can automatically load it.

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