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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...

<p>Hello,</p><p>There is a single connection between two 4500 switches.Switch A  interface A - Switch B interface B</p><p>On switch A, the interface A is the only interface for an Etherchannel. On switch B, interface B does not belong to any Ethercha...

emmawuxp06 by Level 1
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Resolved! OSPF / VLAN

On 4500 BackBone Switch ; we have 15 VLANS, running OSPF as the routing protocol, we need to create another new VLAN (vlan 120) and the requirement is that this VLAN should not be allowed to communicate with other vlans.As per requirement I have not ...

<p>Can someone provide me an example config for running VRRP with multiple VLANS on a router?  Does multicast have to be enabled ?  I cannot get more than one VRRP group to failover on a VLAN.  Here is the config i have so far:</p><p> </p><p>track 2 ...

bspear123 by Level 1
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<p>My charitable organization people are in VLAN 12.  The hospital is in VLAN 11.  They both connect via fiber to a 3560G.  Right now, 11 and 12 can see all of the other person's network.  I want to make it so 12 cannot see 11.</p><p>12 Trunks out of...

toddnh65a by Level 1
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I did a complete switch config, VLANs and all, and TFTPd the config out to a server. Then I cleared the switch out (delete vlan.dat and wri era/reload). Once it reloaded I configured the minimum necessary to get IP connectivity to the TFTP server, an...

<p> Hi every body!<br /> What are contents of DHCP snooping binding database?<br />How Can I view this database? could any body give me an example displaying the contents of dhcp snooping binding database?<br /><br />Thanks a lot!</p>

sarahr202 by Level 5
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<p>This 3560 just started doing this to me, when I make a change and I issue wither "wr" or "wr m":</p><p>Building configuration...<br /> <br />Error writing new config file "flash:/config.text.new"<br />Error writing new config file "flash:/private-...

toddnh65a by Level 1
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<p>Can someone provide me an example config for running VRRP with multiple VLANS on a router?  Does multicast have to be enabled ?  I cannot get more than one VRRP group to failover on a VLAN.  Here is the config i have so far:</p><p>track 2 interfac...

bspear123 by Level 1
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Hello All,I have an HSRP issue. Here's the st standby brief output from my switches.switch 1Vl501 51 100 P Active local 172.25.10.253 172.25.10.1Vl600 60 100 P Active local 172.25.11.253 172.25.11.1switch 2Vl...

<p>I am using 6509 core switch in which i configure dhcp pool for every vlan from this i connect 4510R using as a distribution swtch from this i connect 2960 switches as an access layer. My client machine is conneted with 2960 the issue is that some ...

I have been trying to set up an Access Control List on a Cisco 1841 router. I can see that a basic ACL isnt exactly rocket science, but this just doesn't seem to work. By "doesn't work" I mean that as soon as I apply the ACL to an interface, i immedi...

scottford by Level 1
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<p>Hi every body!</p><p>I just want to see the feilds inside the dhcp option 82.</p><p>Could anyone please forward me a link which could explain the feilds.</p><p>Thanks a lot!</p><p> </p>

sarahr202 by Level 5
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