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advice choose right core switch

Hi, i need an advice to choose a core switch for my network. Now i have a flat network with some 3750E stacked and some 3750G. 3750E are connected with 10Gb fiber and 3750G with 1Gb Fiber.After summer i need to buy 2 switches for 2 server rooms (i th...

Resolved! HSRP State flapping

Hello I've just migrate my core switch from Cisco 3560 to Cisco WS-C3850-48T-L (IOS-XE Software,  (CAT3K_CAA-UNIVERSALK9-M), Version 03.06.06E). The issue I meet is that HSRP state is flapping continiously when I check my log, I have no physical lin...

Resolved! Not sure where to configure the storm-control

We have a lot of users connecting to the access layer switches, and some users cause to make broadcast issue. I heard that storm control works only inbound? So I want to know where to configure the storm control. Please see attached. Red? (Access lay...

ohforce55 by Beginner
  • 3 replies
  • 0 Helpful votes

Error on Native VLAN with 3 switches

Hi! I was studying VLANs and testing some native VLAN projects on Packet Tracer 6. I've built this network with 2 segments, each one using a different native VLAN for both ports to avoid mismatch. In my project, SW1-SW2 segment is configured with VLA...

VitDoc by Beginner
  • 2 replies
  • 5 Helpful votes

Resolved! Does 3750 have any IP Base model?

Does 3750 have a None E and None X model?Cisco Catalyst 3750G-48TSCisco Catalyst 3750-24PS-SThese two switches are IP Base or Lan base?What that 5th letter means? what TS and PS-S means?what command should I put in IOS to see if this is an IP base sw...

George-Sl by Beginner
  • 15 replies
  • 0 Helpful votes

2960X dead PSU?

I have a number of remote 2960X units which are connected to a Cisco RSP2300 unit for power redundancy.I noticed that one of the switches is being powered by the RPS unit. I have rebooted it, and it continues to show it's being powered by the RPS.I h...

fred2k3 by Beginner
  • 1 replies
  • 0 Helpful votes

Resolved! 3650 forgetting my port descriptions

I have 2 * WS-C3650-48TS switches running 16.6.3 When I add Port Descriptions from the web GUI (Configuration -> Physical Interfaces) it appears to save them, but then after a time (I'm not sure exactly how long, but lets say a few days) they disappe...

fred2k3 by Beginner
  • 3 replies
  • 0 Helpful votes

Resolved! ASIC <--->CPU packet flow

Hi, I would like to know if a CISCO  switch uses DMA (Direct memory access) to copy a control packet (e.g OSPF) or a packet for which there is no entry in FIB to CPU? If not how does it happen? I'm not familiar with the internal architecture/ packet ...

Resolved! Error log %PIM-5-NBRCHG: neighbor

Dear I have 2 core 4500 with the below config :Core 1interface Vlan202 description VLAN FOR VOICE  ip address x.x.x.2 no ip redirects ip pim dense-mode standby 202 ip x.x.x.1 standby 202 priority 90 standby 202 preemptend core 2interfac...