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openvswitch/ofproto/ofproto-tnl-unixctl.man

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openvswitch: Userspace tunneling. Following patch adds support for userspace tunneling. Tunneling needs three more component first is routing table which is configured by caching kernel routes and second is ARP cache which build automatically by snooping arp. And third is tunnel protocol table which list all listening protocols which is populated by vswitchd as tunnel ports are added. GRE and VXLAN protocol support is added in this patch. Tunneling works as follows: On packet receive vswitchd check if this packet is targeted to tunnel port. If it is then vswitchd inserts tunnel pop action which pops header and sends packet to tunnel port. On packet xmit rather than generating Set tunnel action it generate tunnel push action which has tunnel header data. datapath can use tunnel-push action data to generate header for each packet and forward this packet to output port. Since tunnel-push action contains most of packet header vswitchd needs to lookup routing table and arp table to build this action. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Acked-by: Jarno Rajahalme <jrajahalme@nicira.com> Acked-by: Thomas Graf <tgraf@noironetworks.com> Acked-by: Ben Pfaff <blp@nicira.com>
2014-11-11 11:53:47 -08:00
.SS "OPENVSWITCH TUNNELING COMMANDS"
These commands query and modify OVS tunnel components. Ref to
README-native-tunneling.md for more info.
.
.IP "\fBovs/route/add ipv4_address/plen output_bridge [GW]\fR"
Adds ipv4_address/plen route to vswitchd routing table. output_bridge
needs to be OVS bridge name. This command is useful if OVS cached
routes does not look right.
.
.IP "\fBovs/route/show\fR"
Print all routes in OVS routing table, This includes routes cached
from system routing table and user configured routes.
.
.IP "\fBovs/route/del ipv4_address/plen\fR"
Delete ipv4_address/plen route from OVS routing table.
.
.IP "\fBtnl/arp/show\fR"
OVS builds ARP cache by snooping are messages. This command shows
ARP cache table.
.
tnl-arp-cache: Add a command to add or modify an ARP cache entry. This allows the ARP cache to be prepopulated for testing purposes, so that tests don't lose the first packet to each destination. (I guess this feature could have other uses too.) Signed-off-by: Ben Pfaff <blp@nicira.com> Acked-by: Andy Zhou <azhou@nicira.com>
2015-07-21 16:19:54 -07:00
.IP "\fBtnl/arp/set \fIbridge ip mac\fR"
Adds or modifies an ARP cache entry in \fIbridge\fR, mapping \fIip\fR
to \fImac\fR.
.
openvswitch: Userspace tunneling. Following patch adds support for userspace tunneling. Tunneling needs three more component first is routing table which is configured by caching kernel routes and second is ARP cache which build automatically by snooping arp. And third is tunnel protocol table which list all listening protocols which is populated by vswitchd as tunnel ports are added. GRE and VXLAN protocol support is added in this patch. Tunneling works as follows: On packet receive vswitchd check if this packet is targeted to tunnel port. If it is then vswitchd inserts tunnel pop action which pops header and sends packet to tunnel port. On packet xmit rather than generating Set tunnel action it generate tunnel push action which has tunnel header data. datapath can use tunnel-push action data to generate header for each packet and forward this packet to output port. Since tunnel-push action contains most of packet header vswitchd needs to lookup routing table and arp table to build this action. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Acked-by: Jarno Rajahalme <jrajahalme@nicira.com> Acked-by: Thomas Graf <tgraf@noironetworks.com> Acked-by: Ben Pfaff <blp@nicira.com>
2014-11-11 11:53:47 -08:00
.IP "\fBtnl/arp/flush\fR"
Flush ARP table.
.
.IP "\fBtnl/egress_port_range [num1] [num2]\fR"
Set range for UDP source port used for UDP based Tunnels. For
example VxLAN. If case of zero arguments this command prints
current range in use.
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