I have four 6509 switches connected in full mesh. The IOS is 12.2(33)SXI4a. Spanning tree mode configured is RPVST+. The switches are connected using fiber cables.
UDLD default hello interval is 15 sec. Going through Cisco documentation regarding UDLD, I noticed that holdtime of UDLD should be less than convergence time of spanning tree. Taking this into consideration, what should I set UDLD hello interval so that UDLD will take care of unidirectional links without causing a spanning tree loop to occur.
Convergence time depends on how well the network is configured with uplinkfast/backbonefast/portfast features. Normally the convergence time with RPVST+ is about 5 sec.
Configuring fast UDLD is a good idea. If one of the links becomes unidirectional, Fast UDLD detects this situation faster than regular UDLD and errdisables the link. Traffic is switched over to the second link by EtherChannel. Because this occurs very quickly, traffic loss is minimized.
Starting from NFVIS 3.12 versions, the deploy option does not depict all the SR-IOV VFs(Virtual Functions) available in a physical interface. This change is introduced as (i) the number of VFs of ENCS platform on LANs side is increased to 24 and (ii) the...
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Hi alli have 40 spots (40 Ethernet cables for computers coming out from switch) and i want each of these spots to have fix IP which means if i swap the computer the IP of certain spot remain the same.example : at spot 30 i have IP address of 192.168.22.40...
Cisco DNA Center nodes lost network connectivity. Cannot SSH to nodes. Cluster and Enterprise port connected to Cisco Nexus Switches.
Cisco DNA Center kernel logs showing hung queue error messages. "sudo cat /var/log/kern.log"