![]() The following example shows valid IP address configurations on two loopback interfaces. Up to thirty-two IP addresses are supported on a loopback interface. 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. I tried extended ping using other sources no luck. I noticed while trying to upgrade code on the 2811 and it kept failing. configuration of 2811 looks like this as well as 3750. it works either way ping -t 192.168.1.1 ping 192.168.1. For some reason I cannot ping loopback address, The loopback is for a cme. 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. Sep 6th, 2017 at 11:23 PM It doesnt have to be. 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. ![]() ![]() Loopback interfaces share the same IP address space with VLAN configurations. If you ping on 10.0.0.11, you wont get ping replies as there is obviously no remote host, but you will see the corresponding ARP requests in Wireshark. The ping to IPv4 is not, because it is possible that IPv4 is not allowed in the cloud devices, since it is specified under the PC that this client is only for IPv6. If you ping to this 10.0.0.10 address the ping will get ping replies, but you wont see any of this traffic in Wireshark (much like the 127.0.0.1 problem). You can configure a loopback interface only from the CLI you cannot configure a loopback interface from the WebAgent or Menu interface. I have reviewed your exercise and the IPv6 ping is successful.
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