I have many access switches with the same configuration but WHY I am getting this issue only on some switches. I want to know why this
problem is random in nature (occurring on only some switches).
Secondly "vlan dot1q tag native" is not supported some of the access switches(2960) but this command has applied on the core switch. Should I remove it from the Core switch or keep it there? What is the best
practice? But other access switches are working properly without "vlan
dot1q tag native" command.
How can I fix this issue without applying "switchport trunk allowed vlan 1-4094".
This problem is not solved by SHUT/NOSHUT under the trunk interfaces.
You will see this if the trunk configs do not match on each end and native vlan mismatches are a cause in a lot of cases . Make sure trunk parameters match exactly on each end including native vlans. Also what vlans allowed across the trunk probably do not match. The switch looks at these if you are using DTP to create the the trunks , its a self protection mechanism. All newer switches including the 2960 support specifying a specific native vlan for the trunks , if none is specified it defaults to vlan 1.
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
Introduction Featured Speakers Luis Espejel is the Telecommunications
Manager of IENova, an Oil & Gas company. Currently he works with Cisco
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worked as a Senior Engineer with the Routing P...
In this session you can learn more about Layer 3 multicast and the best
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