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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 all, I'm trying to find some information relating to the over-subscription on the 8-port 10Gbps modules (e.g. WS-X4908-10GE) that are available for the 4900M. I've found that they have a 2:1 ratio, but cannot find out whether this is mapped port-t...

nickgreen by Level 1
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Resolved! Subnet Mask Change

I need to change the subnet mask on a vlan that a customer has from a /26 to a /25.  Before I do that I want to be sure that the only issue I see is that changing this will be that anything configured in the first 64 addresses that has a static IP ad...

Hi all,if we have two VLANs (red and green) configured on a Cisco 3750X is it possible to let DHCP requests from red to be forwarded to a central DHCP server using ip helper and clients on the green VLAN get their IP address configured from DHCP serv...

Hi all,I am unable to configure lldp on cisco 3560 switch and when I am putting "?" under global configuration mode lldp command is not showing there.Is there any issue with the IOS version ? Please help.Thanks,Arijit

Hi,A couple of years ago I had a vlan which was something like this 192.168.200.0/22.  I'm looking to this again but I want to make it 192.168.0.0/16.I've forgotten the original setup of this, so.... I'm connecting a router to a swtich.  On the route...

Hi,I have 3 Switches cascaded in the network which are configured with multiple VLANSnow there is a very peculiar issue that there are packet drops observerd in the LAN for only a particular VLAN , rest of the VLANs work fineWhat could be the issue ?

aryarahul by Level 1
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Why the host ports are also seen in the spanning-tree output ?Switch1#show spannVLAN0001  Spanning tree enabled protocol ieee  Root ID    Priority    32769             Address     0000.0CA2.138B             This bridge is the root             Hello T...

I have this ACL applied to a VLAN interface as follows:ip access-list extended catch-snmp permit icmp host 10.83.1.13 host 192.168.60.172 permit ip host 10.83.1.13 host 192.168.60.172 permit udp host 10.83.1.13 eq snmp host 192.168.60.172 permit ip a...