This command configures the specified port or channel so that it is in a loopback mode. A line loopback loops frames received on the corresponding port or channel back toward the transmit (egress) direction before reaching the framer. The bit stream is not reframed. The electrical signal is regenerated by the Tx line interface unit (LIU) and the timing is provided by the Rx LIU.
Indicates if the port is in use by loopback mac-swap application. If 'None' is displayed, the port is not enabled for loopback testing. If 'Internal' is displayed, the port is in use by port loopback mac-swap application and no services can be configured on this port.
g. Create a banner that warns anyone accessing the device that unauthorized access is prohibited.S1(config)# banner motd $ Authorized Users Only! $S2(config)# banner motd $ Authorized Users Only! $h. Save the running configuration to the startup configuration file.S1# copy running-config startup-configS2# copy running-config startup-configPart 2: Configure and Verify Single-Area OSPFv2 for basic operation.Step 1: Configure interface addresses and basic OSPFv2 on each router.a. Configure interface addresses on each router as shown in the Addressing Table above.R1(config)# interface g0/0/1R1(config-if)# ip address 10.53.0.1 255.255.255.0R1(config-if)# no shutR1(config-if)# exitR1(config)# interface loopback 1R1(config-if)# ip address 172.16.1.1 255.255.255.0R1(config-if)# exitR2(config)# interface g0/0/1R2(config-if)# ip address 10.53.0.2 255.255.255.0R2(config-if)# no shutR2(config-if)# exitR2(config)# interface loopback 1R2(config-if)# ip address 192.168.1.1 255.255.255.0R2(config-if)# exitb. Enter OSPF router configuration mode using process ID 56.
f. Verify OSPFv2 is operational between the routers. Issue the command to verify R1 and R2 have formed an adjacency.R1# show ip ospf neighborNeighbor ID Pri State Dead Time Address Interface2.2.2.2 1 FULL/DR 00:00:33 10.53.0.2 GigabitEthernet0/0/1R2# show ip ospf neighborNeighbor ID Pri State Dead Time Address Interface1.1.1.1 1 FULL/BDR 00:00:37 10.53.0.1 GigabitEthernet0/0/1Which router is identified as the DR? Which is the BDR? What was the selection criteria?
Answers will vary. In this example R1 was configured first and was speaking OSPF before R2. So during the OSPF election only R1 was configured for OSPF and became the DR. After R2 was configured for OSPF it became the BDR on the Gigabit segment. The router with the highest router ID is used in the selection of DR and BDR.g. On R1, issue the show ip route ospf command to verify that the R2 Loopback1 network is present in the routing table. Notice the default behavior of OSPF is to advertise a loopback interface as a host route using a 32 bit mask.R1# show ip route ospfGateway of last resort is not set 192.168.1.0/32 is subnetted, 1 subnetsO 192.168.1.1 [110/2] via 10.53.0.2, 00:03:12, GigabitEthernet0/0/1h. Ping the R2 Loopback 1 interface address from R1. The ping should succeed.
a. On R1, configure the interface G0/0/1 OSPF priority to 50 to ensure R1 is the Designated Router.R1(config)# interface g0/0/1R1(config-if)# ip ospf priority 50b. Configure the OSPF timers on the G0/0/1 of each router for a hello timer of 30 seconds.R1(config)# interface g0/0/1R1(config-if)# ip ospf hello-interval 30R2(config)# interface g0/0/1R1(config-if)# ip ospf hello-interval 30c. On R1, configure a default static route that uses interface Loopback 1 as the exit interface. Then, propagate the default route into OSPF. Note the console message after setting the default route.R1(config)# ip route 0.0.0.0 0.0.0.0 loopack 1%Default route without gateway, if not a point-to-point interface, may impact performanceR1(config)# router ospf 56R1(config-router)# default-information originated. On R2 only, add the configuration necessary for OSPF to treat R2 Loopback 1 like a point-to-point network. This results in OSPF advertising Loopback 1 using the interface subnet mask.R2(config)# interface loopback 1R2(config-if)# ip ospf network point-to-pointR2(config-if)# exite. On R2 only, add the configuration necessary to prevent OSPF advertisements from being sent to the Loopback 1 network.
launch_testing_ament_cmake
: required=0.10.3, local=0.10.2 rosbag2_compression
: required=0.3.5, local=0.3.4 rcl_action
: required=1.1.9, local=1.1.7 rosidl_generator_cpp
: required=1.1.0, local=1.0.1 ament_cmake_target_dependencies
: required=0.9.7, local=0.9.6 rclcpp_components
: required=2.2.0, local=2.1.0 nav2_costmap_2d
: required=0.4.5, local=0.4.3 ros2lifecycle
: required=0.9.7, local=0.9.7 lifecycle
: required=0.9.3, local=0.9.3 tinyxml_vendor
: required=0.8.0, local=0.8.0 gazebo_msgs
: required=3.5.0, local=3.5.0 cv_bridge
: required=2.2.1, local=2.2.1 ament_lint_auto
: required=0.9.5, local=0.9.5 nav2_map_server
: required=0.4.5, local=0.4.3 ament_cmake_flake8
: required=0.9.5, local=0.9.5 rqt_py_common ...
For the "participant index" thing: it really prefers multicast for discovery, but the default configuration of a Linux loopback interface (at least on some distributions) falsely claims not to support multicast ... because of that it falls back to unicast discovery, but then it:
In audacity's preferences it only says ALSA in the top dropdown, im not sure if that is supposed to be like that or if it said PulseAudio before. There aren't even all my devices in the playback tab. Same goes for the recording device selection, but the loopback device I need to record from is there, so that works.
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