![]() The following example shows valid IP address configurations on two loopback interfaces. Given, for example, a 10.11.12.0/24 network, many people incorrectly call that a Class C network because of the /24 network mask, even though the first bit of the address is 0, making it is a Class A network, albeit with a longer network mask than the default Class A network mask, meaning it is a subnet of a Class A network, not a Class C network. When computers talk, they check to see if they are on the same subnet as the device they are talking to. If you ping 127.3.3.3 for example your device will ping itself. A loopback device is generally assigned that entire range. See PING parameters to fine-tune the PING command to get the most accurate results. ![]() For IPv6: PING ::1 or PING IPV6-LOOPBACK. Up to thirty-two IP addresses are supported on a loopback interface. During the configuration I noticed that the created loopback interface is not pingable and the vxlan interface is down due to loopback interface is inactive. To ping the loopback interface on your system to troubleshoot the problem, follow these steps: At the command line, type these commands: For IPv4: PING 127.0.0.1 or PING LOOPBACK. You can configure multiple IP addresses on a loopback interface ( lo0 to lo7). In the same way, if you configure a loopback interface ( lo1) with IP address 172.16.101.8, you cannot configure another loopback interface ( lo2) with IP address 172.16.101.8. fill out the form & at the Extended commands choose/type Y and enter the source address. This means that the address cannot be used by a VLAN interface or another loopback interface.įor example, if you configure a VLAN with IP address 172.16.100.8/24, you cannot configure a loopback interface with IP address 172.16.100.8. ![]() The maximum number of IP addresses supported on a switch is 2048, which includes all IP addresses configured for both VLANs and loopback interfaces (except for the default loopback IP address 127.0.0.1).Įach IP address that you configure on a loopback interface must be unique in the switch. From the source machine 192.168.1. Loopback interfaces share the same IP address space with VLAN configurations. On 192.168.1.36 I can ping the loopback and the source machine. You can configure a loopback interface only from the CLI you cannot configure a loopback interface from the WebAgent or Menu interface.
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