The Access Switches are redundant connected to the two Core Switches. From the STP point of view we have a standard triangle situation.
Problem: Pinging the SW_A01 from SW_C02 is not possible.
more details: SW_C01 is root of the stp. On SW_A01, the uplink to the nonroot Coreswitch (which is SW_C02) is blocked (as it should). On the SW_C02 the sh arp tells me that the SW_A01 is connected directly on its own port, what is wrong, because this link is blocked at the other end. So why is the MAC-Address sean here?
Even more details:
The Core Switches are running PVST.
The Access Switch only supports CSTP.
How can I configure the Switches, that the Problem can be solved? Any hints?
For STP, what does SW_C02 say about the VLAN/IP Subnet that's not accessible? What does SW_A01 say? Do you have a STP root bridge conflict?
Where's the VLAN interface? You say you can't ping from SW_A01. Do you mean that you can't ping from the switch, or can't ping from a node attached to SW_A01? Do you have a VLAN interface on the switch? Can you ping each VLAN interface IP on each of the three switches?
If you unplug/shutdown the link from SW_A01 to SW_C01, can you ping SW_C02?
Are you doing any VLAN pruning? Do you have trunks properly configured and are you allowing all VLANs across?
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
IOS® and Cisco IOS XE platforms, and NX to some extent. He has also
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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