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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 an MST region, connecting to a rpvst switchblock. The rpvst distribution switches, consist of 2 3750's stacked together, each switch member has an uplink to a switch in the MST region. One of the ports is in the blocked state as expected, how...

dansken82 by Level 1
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Suppose I have a 700 meter pair of single mode fiber strands connecting building A to B.  The switch in building A is in the MDF right next to the fiber termination.  In building B, the fiber also terminates in the MDF, but the switch, unfortunately,...

ds6123 by Level 1
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Hi All, was wondering if anyone as ever run into this problem before. The company I work for has a floor that is using a stack of 2960S switchs and sticky MAC port security, with the exception of the last 24 ports which are NAC managed conference roo...

cdsemrad by Level 1
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  • 10 replies
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HI everyone i needed to activate RIP 2 on catalist 6509 i'm entering all configuration commands like conf tversion 2 passive-interface Vlan16 passive-interface GigabitEthernet7/48....passive-interface GigabitEthernet8/44.....passive-interface Gigabit...

aklyuka30 by Level 1
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I have this Cisco 6509 running 12.2.18SXF7b and it has Sup32 and WS-X6248 and 6348 line card. I have started noticing this strange behavior I see that several ports go into "disabled" mode. These are not only the uplink ports but also the ports where...

nawas by Level 4
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  • 3 replies
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I can't for the life of me find the instructions on the cisco.com site. Been looking for 2 days. I'm trying to install s72033-adventerprisek9_wan-mz.122-33.SXI1 on a Sup720 that's running 122-33.SXI7. If someone can provide a link for me that would b...

rshum by Level 1
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  • 5 replies
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Hello I'm new to the forum. Hope this works out. Basically I have a test lab consisting of two ASA's both running IOS 8.4. I would like to connect the outside interface of ASA2 to the DMZ on ASA1 and use the outside interface on ASA1 for ISP connecti...

crewdog10 by Level 1
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  • 6 replies
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Friends,Could someone clarify the following statement from Cisco 6500 Supervisory Engine 720 datasheet-Delivering upto 40Gbps per slot of switching capacity, 720 Gbps aggregate bandwidth.Like does this mean that a single slot from the 6500 chassis wi...

Hello all,I've done two very stupid things, first I didn't make an offline backup of my configuration of recently added switch, 2950, and two, I have forgotten the username that I setup for SSH access into that switch. (I did prevent telnet access as...

Hi,I want to block a particular PC (MAC address) from accessing a Router (Network) in a simple network as follows-So, I applied MAC ACL to fa2/1 interface of switch as-Switch(config)#mac access-lists extended test1                    #deny host <mac ...

HI, I have core and edge switch. core's gig3/2 is connected to edge's gig0/1.RUN CONFIG is -core#sh run int gig3/1Building configuration...Current configuration : 130 bytes!interface GigabitEthernet3/1 switchport trunk encapsulation dot1q switchport ...

Resolved! Vlan isolation

Can you restrict a vlan from commuicating with vlan1 (default vlan) when they have both been configured on the same Layer 3 Cisco switch?I'm trying to create a vlan consisting of only two ports that will allow a server in our DMZ (192.168.2.2/24) to ...

Hello All,My question is very naive. If i have a 6506 in which five SVIVvlans ( vlan 100 - vlan 500 ) are created.Vlan 100 is printer, vlan 200 is financial vlan.The route on this switch will point as default to a upstream firewall or router.1. will ...

suthomas1 by Level 6
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  • 4 replies
  • 0 Helpful votes