Hi Allits been a long time since I looked at the basics :). Do switches use the cam table or tcam table for Mac learning ?also, if we were to add say 300 access list control entries and apply to a switch port, would this cause any negative impact to ...
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Forum Posts
We have a device connected to a 3650 switch whose ethernet controller crashes when it receives more than 200000pps. The traffic to this device can have variable packet sizes, so it would not be practical for us to rate-limit by mbps. Is there any mec...
Hi! I have problem with IGMP querier config. I would like to change version 2, what 3560 uses default, to version 3. Reference guide says that go interfaces config and then type command ”ip igmp version 3”. After that I could config other parameters,...
Hello, I am newbie, i replaced 2 switches with vlan33 protected by FW with 4 cisco 2x sg350x and 2x SX350X in Hybrid stack. The stack is now accessible from vlan1 and vlan33. Removing FW I have to filter accesses in http https from vlan1 to vlan33. ...
Resolved! Stack removal
I am my honing my troubleshoot skills and I have a general inquiry on switch stacks. I have a member that went down and I am curious on do and donts of adding it back without restarting the whole stack. I am aware that stacking a live member will cau...
We have 2 Cisco 6332 FI's hooked together and also trunked to a Cisco 9732 switch. This setup also includes 3 Cisco C240 servers. This was all working and then we had to tear down the setup and move it to another room for lab renovations. Got everyth...
Hello,I am trying to configure dot1x authentication for all access ports on our access switches. We currently have dot1x set up for our WLAN with WAP-Enterprise that uses certificates on the Windows machines to authenticate on a Cisco ISE server. Tha...
Hi all We have 3 C9200-48P stacked switches, with SFP+ network modules C9200-NM-4X on each. We have observed the Te1/1/x ports have disappeared from the interfaces list. Is the network module C9200-NM-4X hot swappable ? Can we try to remove it then r...
Resolved! Cisco C1111-8P (1RU) and IPSec - VPN
Hi, IPSec VPN is supported for the Cisco C1111-8P (1RU) running System image file is "bootflash:c1100-universalk9_ias.16.09.04.SPA.bin"? If yes, will appreciate a step-by-step guide for the purpose of Site-to-Site VPN configuration?
Hello allI´m using a Cisco ISR 4321 with version 15.5(3)S4b, I need to block all traffic from one specific mac address. So far I have found that I have to run this commands mac access-list extended DENYMACdeny host aaaa.bbbb.ffff any class-map typ...
Hi, I'm practicing spanning tree protocol with packet tracer and was confused about spanning-tree vlan 1 root primary/secondary this two commands how it usually works.I've set up two switches(2960-24TT) and link them together through G0/1-2 on each s...
Can anyone help explain the follow errors I am seeing in my POE Switch? Thank you. POWER_OVER_ETHERNET.giga-swx 0/4 Couldn't enable pre-802.3at mode! --err code -3POWER_OVER_ETHERNET The PoE subsystem has detected an error and will be internally rese...
I'm in the process of upgrading all of our 3850 switches from 03.06.08E to 16.03.09, so far everything are going smooth.I noticed in one of our 3850 the current image is 03.03.03SE(License Level: Ipservices), Can I upgrade it also to 16.03.09 directl...
Hello guys, I found at Cisco Catalyst 9200 Series Switches Datasheet that Catalyst 9200 supports 4096 VLAN ID's and Catalyst 9200L supports 1024 VLAN ID's. So, it isn't possible to configure VLAN with ID's above 1024 on Catalyst 9200L switches? Than...
I have a C1941/K9 router running IOS verison of "150-1.M3" Can I upgrade it directly to 157-3.M8(MD)?Do I need to upgrade first the rommon from 15.0(1r)M9 to 150-1r.M16?EXISTING IMAGE:---c1900-universalk9-mz.SPA.150-1.M3.binEXISTING ROM: --- ROM: Sys...
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