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authorChris Luke <chrisy@flirble.org>2016-12-28 09:44:47 -0500
committerDamjan Marion <dmarion.lists@gmail.com>2016-12-28 15:48:08 +0000
commitfdc62abdc113ea63dc867375bd49ef3043dcd290 (patch)
tree58fa46de0a30e69db796564890c3daa2830953c7 /src/vnet/span/span.md
parent37d77e9edbf845de23d41c343c11b34a575761ff (diff)
Repair Doxygen build infrastructure
After Gerrit 4430 much of the documentation failed to build, but silently so it was easily missed; equally missing that several paths have been missing for a while. - Correct paths after directory tree changes. - Doxygen now bails when input paths don't exist. - Fix up some of the less deranged entries in the documentation index. - Exclude the LUA tree, its documentation is a mess. Change-Id: I35e6b433feee5e05bca772d93aa1635c724db734 Signed-off-by: Chris Luke <chrisy@flirble.org>
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-# VPP SPAN implementation
-
-This is a memo intended to contain documentation of the VPP SPAN implementation.
-Everything that is not directly obvious should come here.
-
-
-## Switched Port Analyzer (SPAN)
-Port mirroring is used on a network switch to send a copy of network packets seen on one switch port to a network monitoring connection on another switch port.
-Can be used by network engineers or administrators to measure performnce, analyze and debug data or diagnose errors on a network.
-
-### RX traffic node
-There is one static node to mirror incomming packets.
-* span-input: Creates a copy of incomming buffer due to incomming buffers can be reused internally.
-
-Chaining: dpdk-input -> span-input ->
-* original buffer is sent to ethernet-input for processing
-* buffer copy is sent to interface-output
-
-### Configuration
-SPAN supports the following CLI configuration commands:
-
-#### Enable/Disable SPAN (CLI)
- set interface span <if-name> [disable | destination <if-name>]
-
-<if-name>: mirrored interface name
-destination <if-name>: monitoring interface name
-disable: delete mirroring
-
-#### Enable/Disabl SPAN (API)
-SPAN supports the following API configuration command:
- sw_interface_span_enable_disable src GigabitEthernet0/8/0 dst GigabitEthernet0/9/0
- sw_interface_span_enable_disable src_sw_if_index 1 dst_sw_if_index 2
-
-src/src_sw_if_index: mirrored interface name
-dst/dst_sw_if_index: monitoring interface name
-
-#### Remove SPAN entry (API)
-SPAN supports the following API configuration command:
- sw_interface_span_enable_disable src_sw_if_index 1 dst_sw_if_index 2 disable
-
-src_sw_if_index: mirrored interface name
-dst_sw_if_index: monitoring interface name
-
-### Configuration example
-
-Mirror all packets on interface GigabitEthernet0/10/0 to interface GigabitEthernet0/11/0.
-
-Configure IPv4 addresses on mirrored interface:
-set interface ip address GigabitEthernet0/10/0 192.168.1.13/24
-set interface state GigabitEthernet0/10/0 up
-
-Configure IPv4 addresses on monitoring interface:
-set interface ip address GigabitEthernet0/11/0 192.168.2.13/24
-set interface state GigabitEthernet0/11/0 up
-
-Configure SPAN
-set span src GigabitEthernet0/10/0 dst GigabitEthernet0/11/0
-
-### Operational data
-
-Active SPAN mirroring CLI show command:
- show interfaces span
-
-Active SPAN mirroring API dump command:
- sw_interface_span_dump