Hello all! On request of the network team our datacenter team provides fiber optic crossconnects between switches. Once these ISLs are in place we can execute a change at a later time to have the interfaces configured and enabled for use in production. Despite the agreement to carefully patch RX/TX strands carefully, the cable needs an RX/TX swap nonetheless and nobody present on location at time of change execution. One way to have the DC team check RX/TX connectivity is to enable the switch interface when connecting the fiber, but it will immediately take part in spanning tree and other network protocol negotiations, which is strictly prohibited at that time. Is there a way to enable (Nexus) switch interfaces to allow to verify the optical interfaces signals without interference in network connectivity? I'm thinking of routed interfaces without IP, but maybe there's some other way to allow to check for link connectivity only, and not make it part of network configuration yet. Kind regards, Marco ... View more

Hi all, I have scheduled to replace a fan blade of a running Catalyst 6509 system, and I do not expect any downtime. If I remember well I have about 5 minutes to do so, else the system will automatically shut down. However, I cannot find any reference to confirm this. Who can help me out? Thanks and regards, Marco ... View more

Dear Cisco experts, I wonder if there's a way to manipulate sent traps from a switch with different severity levels? I now see SNMP link_down traps in my NMS, but they're all of the same level, but a link_down from a desktop is 'normal', a server link_down would be 'warning', but when an uplink to another data center goes down, it should result in all alarms going off, so should be 'critical'. Is there a way to tell my switch to send an SNMP trap on a different severity level dependent on the type of interface? This is most important because these links all have different SLAs. Many thanks for your support and suggestions. Marco van der Pal ... View more