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Hello, Cisco Community!I’m really happy to share that I’ll be hosting the Cisco Community Lab Series, a brand-new hands-on learning journey designed to help you build practical networking skills step by step.Every Thursday at 8 PM EST, I’ll post a ne...

We have 6 switches in a cluster. I've read quite a bit the last couple of days about it, but time isn't on my side. I just don't get how I'm supposed to switch between switches since there's only one IP address. I tried to set up a vlan only to ha...

Hi there,I have a Cisco 3020 bladeswitch that is only reporting interface bandwidth of 10000Kbit when the link is actually a gigabit interface:GigabitEthernet0/9 is up, line protocol is up (connected) Hardware is Gigabit Ethernet, address is 001b.0c...

branfarm1 by Level 4
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  • 5 replies
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I've got a standard pair of Cat 6500s w/ HSRP in my core, running OSPF. We're about to connect to a satellite campus over a routed connection (running over DWDM). The topology is a pretty basic collapsed core design with our closet switches running...

garcia by Level 1
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  • 1 replies
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We have 20+ instruments which sent multicast alerts when certain monitor values are out of range. We've recently discovered that as long as they send alerts relatively constantly we never drop a packet. If they only send alerts every 10 minutes or...

jrobnett by Level 1
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HiI had a problem with multicast so I wanted to clear all the learned enteries in the mroute table. When I ran "clear ip mroute *" then looked at table again nothing had changed.How can I tell if the clear command actually worked because looking at t...

dan_track by Level 1
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I facing strange issue with cat 6509 switch , we have enabled rspan for voice recording solution , entire voice vlan x is replicating to rspan vlan Y.Few particular switches only allowed rspan vlan traffic in the trunk , but on the core switch trunk ...

Hi All,I have two core switches core 1 and core 2 two vlans are there on each of them and hsrp is configured for redundancy.now these core switches are connected with two routers resp and I wantto run hsrp between these two routers also. I have confi...

Hi Netpro,anyone know how to fix this ? this log show on my Core-Switch 6509-ESep 8 17:01:40.662 CCT: %DATACORRUPTION-1-DATAINCONSISTENCY: copy error, -PC= 0x40D24290-Traceback= 4043FB00 4045C420 40D24290 40D21564 4045FAF4 41056218 4046DFD8 4103DE8...

From what I've read DHCP snooping can help prevent unauthorized DHCP servers from causing disruptions on the network. I don't see how that is from the configurations I've read. http://www.cisco.com/en/US/docs/switches/lan/catalyst4500/12.1/12ew/confi...

rshum by Level 1
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The output of dir flash shows unable to stat flash., may i know the reason?. The Stat LED is green in color.Some of the outpu follows,switch: dir flashunable to stat flash/: permission deniedswitch: copy xmodem: flash:c2950-i6q4l2-mz.121-22.EA7.binBe...