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Output good pkts = 10003 Output unicast pkts = 10000
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Input good pkts = 10003 Input unicast pkts = 10000 Statistics for interface TenGigE0/0/1/1 (cached values): Output 0 broadcast packets, 3 multicast packetsĠ output errors, 0 underruns, 0 applique, 0 resetsĠ output buffer failures, 0 output buffers swapped outĬheck the Controller Counters RP/0/RSP0/CPU0:ASR9001-F# show controllers tenGigE 0/0/1/1 stats Received 0 broadcast packets, 3 multicast packetsĠ input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abortġ0003 packets output, 15140657 bytes, 0 total output drops Last clearing of "show interface" counters 00:02:40ĥ minute input rate 685000 bits/sec, 126 packets/secĥ minute output rate 685000 bits/sec, 126 packets/secġ0003 packets input, 15140657 bytes, 0 total input dropsĠ drops for unrecognized upper-level protocol Output flow control is off, input flow control is off Hardware is TenGigE, address is 65 (bia 65) TenGigE0/0/1/1 is up, line protocol is up Success rate is 100 percent (10000/10000), round-trip min/avg/max = 1/1/5 msĬheck Interface Counters RP/0/RSP0/CPU0:ASR9001-F# show interfaces tenGigE 0/0/1/1 Pings with timeout=0 may result in system instability andĬontrol protocol flaps resulting in traffic impact.ĭO you really want to continue : y RP/0/RSP0/CPU0:ASR9001-F# clear counters tenGigE 0/0/1/1Ĭlear "show interface" counters on this interface This clears counters on both the interface and controller. RP/0/RSP0/CPU0:ASR9001-F(config-if)# end Clear Counters RP/0/RSP0/CPU0:ASR9001-F(config-if)# loopback internal This is traffic impacting RP/0/RSP0/CPU0:ASR9001-F# configure It can find problems with the CPU, fabric path, NP and transceiver, but it cannot find optical or transit problems. This is a basic test that can be performed without access to a remote site. The below examples use this interface: RP/0/RSP0/CPU0:ASR9001-F# show run int tenGigE 0/0/1/1 Internal loops can be done remotely, but don't provide as much information.Įxternal loops must be performed at the site, but give the greatest amount of information. There are two primary kinds of loopbacks: internal and external. When necessary, loopbacks can be used to find problems with line cards, fabric, Network Processors (NPs), transceivers, or optical transit paths.
Loopback plug to test an ethernet port mac#
Its as if the PIC wont transmit to its own MAC address.Īt this point, I don't have the loopback connector attached, I am just looking at what is coming out the port with Ethereal.Using Loopbacks to Test Ethernet Interfaces The only feature enabled in the stack is UDP.Īll of the packets I am sending are UDP, and I open a socket with the IP and MAC address, there is no ICMP used. It will send a packet out to its own IP address, as long as I change the MAC address. If I send out the data to a broadcast address 255.255.255.255.255.255, then the data does transmit, but is still not recieved. I can change the destination MAC address by 1 digit, and the PIC transmits the packet. Ethereal shows no data coming out the port when I try to transmit to my own mac address. While in loopback mode, I can transmit packets to any mac address except for my own mac address.
Loopback plug to test an ethernet port full#
I enable full duplex when I go into the loopback mode, then exit it when I am done with loop back mode.