I have strange problem with ports of my Cisco 4507R-E switch. Sometimes is happened when I look in my CUCM 6.1 to see that one or more phones are not registered. I telnet to 4507R switch to see status of port where IP Phone is connected show ip interface brief and the port is UP. Next thing I write following command show mac address-table interface gigabit 1/18 and there no mac address in output. The configuration of the ports is:
When a packet gets routed, it carries the source MAC address as that of the physical interface or VLAN interface, which performs the routing rather than the outgoing interface which is in switchport mode.
In order to learn the MAC address of the directly connected interface or port, you can configure the port for native VLAN. When any untagged frames are sent out of this port, the source MAC address associated physical port is learned and added to the MAC address table in the remote device.
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Cisco’s software-defined wide area network (SD-WAN) solution allows user to quickly and seamlessly establish an overlay fabric to connect an enterprise’s data centers, branch and campus locations, as well as colocation facilities in order to imp...
1. Log into CLI of DNAC:
ssh maglev@< DNAC appliance IP> -p 2222
2. Run this curl command to get token to get member id:
curl -X POST -u admin:<admin user password> -H -V https://<CLUSTER-IP>/api/system/v1/identitymgmt/token
Enterprise Switching Business Unit is glad to announce Beta release 16.12.2 for all Catalyst 9200/9300/9400/9500/9600 and Catalyst 3650/3850 Platforms. This release is made available to allow users to test, evaluate and share fee...
Purpose of the document
This document describes the general recommendations or best practices when designing and deploying the Cisco SD-Access technology. The document assumes that the reader has a general overview of Cisco's SD-Access for Distributed C...