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68 lines
2.0 KiB
ReStructuredText
68 lines
2.0 KiB
ReStructuredText
Docker Open vSwitch with SNMP for GNS3
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Inspired by gns3/openvswitch
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This are sources for docker image for a configurable Open vSwitch with SNMP and LLDP support.
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By default, all ports will be added to br0. To have eth0 as dedicated mgmt. interface see below.
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Use case examples:
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- SNMP enabled switch
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- test NMS / SNMP topology detection
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Software
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--------
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Based on alpine:latest with additional net-snmp and lldpd packets installed.
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SNMP agent will listen on all interfaces, read-only community is 'public'
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LLDP agent is integrated with snmpd.
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Both agents can be switched on or off by the respective environment variables.
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Environment variables
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---------------------
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Set the following variables to either 1 or 0 to start or not start the corresponding protocols / daemons:
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LLDP, SNMP, RSTP default 1
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Dedicated management interface
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------------------------------
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If MANAGEMENT_INTERFACE=1 eth0 will not be added to br0 and needs to be configured
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as usual.
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Number of bridges
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-----------------
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By default one bridge (br0) is created and all interfaces are added.
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To create more bridges set NUM_BR=n (default n=1).
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Configuration of those additional bridges needs to be done manually.
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RSTP
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----
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By default RSTP will be enabled (RSTP=1).
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Use RSTP_ROOT to set bridge priority. 1 for primary root, 2 for secondary root bridge.
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LLDP
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----
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Use LLDP_CHASSIS_ID=someName to configure chassis id.
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LLDP_PID_TYPE={ifname | mac} configure the port id subtype e.g. what is used as port id.
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For even more LLDP config, you can connect to a running container and edit /etc/lldpd.d/lldpd.conf
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(the folder is added as docker volume for persistence).
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Helpers
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-------
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/bin/rstp is a wrapper for ovs-vsctl.
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Usage: rstp command [bridge]
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status show status
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enable enable RSTP
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disable disable RSTP and forward BPDU
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primary configure bridge as primary root
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secondary configure bridge as secondary root
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By default br0 will be used.
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Building the container
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#######################
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.. code:: bash
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docker build -t gns3/ovs-snmp .
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