What is a characteristic of an ipv4 loopback interface on a cisco ios router
![what is a characteristic of an ipv4 loopback interface on a cisco ios router what is a characteristic of an ipv4 loopback interface on a cisco ios router](https://i.ytimg.com/vi/bxT5OQZoOhw/maxresdefault.jpg)
RP/0/RSP0/CPU0:router(config-if)# no shut RP/0/RSP0/CPU0:router(config)# interface Bundle-Ether1 This example shows two interfaces being created at the same time: first, the bundle trunk interface, then a subinterface attached Hardware is VLAN sub-interface(s), address is 0024.f71b.0ca8Įncapsulation 802.1Q Virtual LAN, VLAN Id 100, loopback not set, HundredGigE0/5/0/0.0 is administratively down, line protocol is administratively down. RP/0/RSP0/CPU0:router# show interface HundredGigE0/5/0/0.0 Output 0 broadcast packets, 0 multicast packetsĠ output errors, 0 underruns, 0 applique, 0 resetsĠ output buffer failures, 0 output buffers swapped out Received 0 broadcast packets, 0 multicast packetsĠ input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abortĠ packets output, 0 bytes, 0 total output drops Last clearing of "show interface" counters neverĥ minute input rate 0 bits/sec, 0 packets/secĥ minute output rate 0 bits/sec, 0 packets/secĠ packets input, 0 bytes, 0 total input dropsĠ drops for unrecognized upper-level protocol Output flow control is off, input flow control is off
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Reliability 255/255, txload 0/255, rxload 0/255įull-duplex, 1000Mb/s, SXFD, link type is force-up HundredGigE0/5/0/0 is administratively down, line protocol is administratively down. RP/0/RSP0/CPU0:router# show interface HundredGigE 0/5/0/0 The following example shows the display output for the trunk interface, HundredGigE 0/5/0/0, followed by the display outputįor the subinterface HundredGigE 0/5/0/0.0. After the new subinterface is configured further, the show interface command can display it along with its unique counters: When a subinterface is first created, the router recognizes it as an interface that, with few exceptions, is interchangeable RP/0/RSP0/CPU0:router# show run | begin HundredGigE 0/5/0/0 The show run command displays the trunk interface first, then the subinterfaces in ascending numerical order. RP/0/RSP0/CPU0:Sep 21 11:12:35.633 : config: %MGBL-SYS-5-CONFIG_I : Configured from console by root Use 'show configuration commit changes 1000000152' to view the changes. RP/0/RSP0/CPU0:Sep 21 11:12:34.819 : config: %MGBL-CONFIG-6-DB_COMMIT : Configuration committed by user 'root'. RP/0/RSP0/CPU0:router(config-subif)# commit RP/0/RSP0/CPU0:router(config-subif)# encapsulation dot1q 100 RP/0/RSP0/CPU0:router(config)# interface HundredGigE0/5/0/0.0 In the following example, the card in slot 5 has trunk interface, HundredGigE 0/5/0/0. Subinterfaces can never have the same subinterface number under one trunk. For example, the following subinterfaces numbers are Subinterface numbers do not need to be contiguous or in numeric order. For a given trunk interface, each subinterface under it must have a unique value. The subinterface number must be a positive You can then assign a subinterface number to the subinterface that you want to create. If a trunk interface does not exist, you must create a bundle interface before creating any subinterfaces under it. To create a subinterface, you must first identify a trunk interface under which to place it. The following configuration samples are examples of the trunk interfaces that you can create:Ī subinterface is a logical interface that the system create under a trunk interface. However, the system does not automatically create bundle interfaces but you must create them at the time of cofiguration. On the router, the system automatically creates the physical interfaces when the router recognizes a card and its physical Must not confuse with the word trunk in the context of VLAN trunking. A main interface is also known as a trunk interface, which you In Cisco IOS XR, interfaces are, by default, main interfaces.