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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...

Hi.What will happen if the switch receive rogue BPDU, Superior BPDU packets on the vlan, which is not taking part on STP? And it isn't on portfast mode.As i understand there should be nothing related with unauthorized activity, as switch doesn't have...

Hi all,I have one confusion for Routing Loop,in distance vector routing is all the routers (i.e. R-1, R-B, R-C) update its routing table at same time or they do have their individual route update timer..?Thanks,Dhaval Tandel

I have an ESX server with two NIC's connected to two seperate 2960 switches (for reducnecy presumably) The two 2960 have a trunk to the core switch 4507. In the syslog I see the following message:Host 00:50:56:47:9B:88 in vlan 104 is flapping between...

Resolved! ip route-cache

HiFor troubleshooting reason, i configured on the interface, no ip route-cache.After troubleshooting i configured, ip route-cache. With show run, the interface shows no ip route-cache cef. My question is, does no ip route-cache disable ip cef on the ...

Thanks everyone, I have dual 6509's with dual FWSM's, basically I need to be able to create FW rules to permit/deny traffic to/from user vlans to several server vlans and between other networks, etc. These VLANs are present in the 6509, can I do this...

bbravo by Level 1
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It seems that one of my Core Routers the BGP to At&T is announcing everything- Yes Everything! OOOPPPSSS. Is there something I should look for? I looked at my other Router going that has BGP to another provider isn't doing that. I can put the con...

cozyk1515 by Level 1
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Hi all, when people talk about vpn phases, ie phase 1 and 2, is phase 1 the intial setup of the tunnel, peering etc, and is phase 2 the authentication etc once its established ?cheers

i have configured to ntp server.the system clock is ok but the time appeared in console is different.*** console log ***Mar 13 09:00:33.177*** sh ntp status ***Clock is synchronized, stratum 3, reference is 203.129.68.37nominal freq is 250.0000 Hz, a...

we have a 4006 with a supervisor 3 engine, 2 fibre modules and one gigbait ethernet module and the rest with standard 10/100 modules. This unit recently went pop and we had it replaced under our existing smartnet agreement. I have now been tasked wi...