Switching

Dynamic Arp Inspection (DAI) vs IP Source Guard (IPSG) with Port Security command

Hi Cisco community, I came across an article that describes IPSG. (https://packetpushers.net/ccnp-studies-configuring-ip-source-guard/). I am aware of the difference between IPSG and Arp inspection in conjunction with DHCP snooping. IPSG only check...

Resolved! 4948-10GE Switch display unreadable characters while booting

I used to upgrade a 4948-10GE switch IOS with latest IOS from here: https://software.cisco.com/download/home/279636820/type/280805680/release/15.0.2-SG11But unfortunately, after uploading the new IOS and deleting the old one the switch stuck at boot ...

Cisco 350x as alternate for Aruba 2930f

Hi, My customer wants aruba switches but i want to recommend for cisco switches instead. Can someone please recommend the best cisco alternate for below aruba itemsSolution should equivalent and cost effective Cisco 350x as alternate for Aruba 2930...

Resolved! Cisco L3 switch communication with Moxa industrial Swi

Greetings, Can someone share their knowledge and experience to explain below troubleshoot scenario. Customer has two existing L3 3560 switches. We need to connect 6 Moxa industrial switches to cisco switches as shown in pic attached. Customer doesnot...

Resolved! AAA username secret

I configured username cisco secret cisco in the switch and then line console 0 with login local and line vty 0 15 with login local,after that I proved and worked well, but I decided to deleted the command username cisco secret cisco to see whats was ...

WS-C3850-48T-S Capacity sizing

Can a single WS-C3850-48T-S support routing for 250 users + 250 voice Phones (assume avg load user and phone)? I know it is not recommended to have a single core switch but this was already decided upon. Just want to make sure it can handle the load....

Multicast problem with RP switch reboot.

After the restart of a 3650 distribution switch stack that is acting as an RP, a downstream switch was not able to send multicast traffic; other parts of the network were not affected. After considerable troubleshooting, we discovered that removing t...

Resolved! Switch stack boot errors

Hello, should I be concerned with the following output during boot of a switch stack? I'm concerned about the message..Image failed digital signature verificationError loading "flash:/update/c2960x-universalk9-mz.152-4.E8/c2960x-universalk9-m z.152-4...

Can a wildcard or some third party certificate be used for IOS SW version 12.2(55)SE12 and IOS SW 15.0-15.3?

I ask this question due to the Cisco announcement made at https://www.cisco.com/c/en/us/support/docs/security-vpn/public-key-infrastructure-pki/215118-ios-self-signed-certificate-expiration-o.html#anc15 and am currently looking and trying out differe...

Resolved! Cisco 2850 and Fios Router

Hello, I'm trying to configure a Cisco 3850 with Fios. I'm able ping across platforms and can ping all vlans. I can't connect to the internet when I connects clients to any of the vlans. Here's what I have on the switch: (192.168.1.1 is the Fios ...

Re: Easy steps for openssl Cisco workaround 3 for certificate

You posted this in the Telepresence forum, seems you need assistance with a switch, might want to move your post to a relevant area of CSC

Resolved! StackWise Virtual on C9500-40X

I need to select 6 new switches, and the model that fits my requirement in terms of ports is "C9500-40X".I also need to implement Stack technology on them but according to the datasheet the StackWise Virtual is not supported yet on "C9500-40X" model....

Resolved! SVL C9600 - Disable link SVL

Hi everyone, I need explain about config SLV on C9600:1. When SVL group links down, By DAD link, act switch convert to Act Switch-Recoverry mode, Stanby Sw- active. But SVL up why act sw-recoverry mode cannot switch back to the original. 2. As Cisco ...

cisco 3750-Flash not detected

Hello ; I have a 3750G switch that it has flash not detected on Roman mode, I try flash_init and dir flash: but no look as below :switch: flash_initInitializing Flash......The flash is already initialized.switch: dirList of filesystems currently regi...