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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...

I am doing some testing with IRB using 2 WS-C3750-12S switches. I have them connected using a point to point routed ethernet ports via multimode SFP's using OSPF as the routing protocol. They connect fine and all is well. We now need to bridge vlans ...

Hi all, can anyone tell me when running spanning tree in my network, if I disable spanning tree on the single uplinks to my switches from the distribution switch will the switches not receive any bpdu's ? but yet on all the access ports on my access ...

I have PCs connected to IP Phones on a VLAN. I have noticed failure on a few of these phones that lasts for only about 2mins. The IP phones restarts as soon as this occurs and does not affect all the phones on this VLAN. Please note that the affected...

chuks by Level 1
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  • 3 replies
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Resolved! Vlan down

Hi all I created 2 VLANs on a 3500XL 1. VLAN 2 2. VLAN 3assigned IP address to eachand use no shutdown commandwhen i use show interfaces commandit says WLAN 2 is administratively down, line protocl down the same is true for VLAN 3what is the problem ...

Due to some resign Catalyst 3560 stopped working. I have updated IOS but still not working. It shows following ErrorPOST: PortASIC CAM Subsystem Tests : BeginError unsupported TCAM value sizeActual value = 20, Expected value = 40POST: POST Pre Init T...

zubair_pk by Level 1
  • 4707 Views
  • 2 replies
  • 0 Helpful votes

Resolved! Vlan down

Hi all I created 2 VLANs on a 3500XL 1. VLAN 2 2. VLAN 3assigned IP address to eachand use no shutdown command.when i use show interfaces commandit says WLAN 2 is administratively down, line protocl down the same is true for VLAN 3what is the problem...

Hi,can I send snmp traps to a snmp manager host with catalayst express CE500 switch ?If possible, how can I configure the host ip address ?Thank you.

ychamps by Level 1
  • 731 Views
  • 1 replies
  • 0 Helpful votes

Could anybody tell me how to change MTU Size on a Cisco 3560 Switch.i mean to say whether it is to be changed on FastEthernet Interfaces or on VLAN 1 or on Global Configuration Mode and with which Command to change it.

susheel.p by Level 1
  • 11425 Views
  • 8 replies
  • 0 Helpful votes

Is it possible to monitor the BPDU traffic between switches? Am I correct that this is done at the frame level (Layer 2) such that a packet sniffer will be of no use? Thanks.

ocicat002 by Level 1
  • 1512 Views
  • 1 replies
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Hi all,Could someone tell me,can I configure two ISP on one Fast Ethernet port. We have a client, bougth a 1841 Modular router without aditional WAN cards. So, the router hes only two interfases. In this moment, we use one interfase for internal LAN ...

m__didova by Level 1
  • 529 Views
  • 2 replies
  • 0 Helpful votes

I'm setting up etherchannel on aggregation/access layers. Design is as followsaggregation 6509/6509 running iosaccess layer 2960tclThe access switch currently has a single gbe uplink to each 6509. In my lab, normal stp blocking occurs at the access s...

rkazala by Level 1
  • 1144 Views
  • 7 replies
  • 0 Helpful votes

Everyone,I have a bunch of 3550s in my network (bunch meaning 20 or so at different locations), that because of some new regulations/mandates, I need to implement 802.1x. My question is it worth replacing my 3550s with 3560s just for 802.1x? Is there...

ricky-li by Level 1
  • 655 Views
  • 2 replies
  • 0 Helpful votes