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Cisco Community is an active and collaborative place to learn more about our products and ask questions of peers and Cisco experts! Check out some of the most popular conversations happening right now!

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Console cable + Putty problem

Hello Everyone , i'm experiecning a problemr with a Cisco 3825 routers , i got a black screen when trying to console into devices ...The same issue occurs with 2 differents devices (both 3825) .i'tried to adjust the speed with many different values b...

Kirollos by • Level 1
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  • 0 Helpful votes

Best Practice for Switch Stack Uplinks

What is everyone's best practice for switch stack uplinks?If there's a stack containing 8 switches and we can fit 8 uplinks in a port channel, should there be an uplink from each switch in the stack?  Or 2 uplinks (master + standby), 2 Uplinks (membe...

MikeMoss by • Level 1
  • 22 Views
  • 2 replies
  • 1 Helpful votes

Hybrid Exchange/ SSL Decryption Error

We are in the process of setting up a Hybrid Cloud/ On-prem Exchange environment. We can successfully connect over port 443, but when we try to send emails over port 25 we are getting a SSL Block. We are using the Decrypt - Known Key rule set up usin...

tbduff001 by • Level 1
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C1111 dynamic and static IP on same interface

Hi, I have a C1111-4P device in front of a Comcast internet connection. Recently Comcast changed things and now if you want to access the diagnostic page of a standalone cable modem connected to your router, you have to NAT outgoing packets to be wit...

QFP Load on C1111

I often get the following error when I load a router with traffic. %IOSXE_QFP-2-LOAD_EXCEED: Slot: 0, QFP:0, Load 85% exceeds the setting threshold 80%.5 secs traffic rate on QFP: Total Input: 31561 pps (31.6 kpps), 274136312 bps (274.1 mbps), Total ...

CBS350 Allowing Inter-VLAN Multicast

I have multiple CBS350 switches on our site and after installing some new security software, I became aware that multicast traffic seems to be traversing between VLANs. I initially saw this on one of my sites that's using older SG200 switches so I th...

Não consigo definir regras ACL

Boa tarde,Espero que estejam todos bem.Tenho um problema ao definir regras de ACL no router.Estou a definir regras na vlan 10 ( int f0.10) (de acordo com a tabela deixada na imagem em anexo) onde não nega nada, apenas está a permitir, mas ao definir ...

Prisma II XD Platform

Regarding the Prisma II XD Chassis we have been getting an intermittent alarm over Input Power Supply Voltage. This issue appears to clear instantly making it difficult to troubleshoot. It does appear to point out a module inside the chassis, but the...

George-M by • Level 1
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  • 3 replies
  • 0 Helpful votes

Catalyst IE 3400H 24T Stuck in POST Mode

I have a new from supplier 3400H switch that let me go through the Day 0 configuration and initial setup. Power cycled at the end like i have always done to other setups to verify the settings stayed and the switch came up and continuously flashes th...

a-e by • Level 1
  • 36 Views
  • 2 replies
  • 0 Helpful votes

Resolved! Duo Deployment to protect Gsuite emails

Hello everyone,I was looking for information on how to deploy Duo for a customer using G Suite emails. This customer doesn't have a Windows server or any other authentication source. Is it possible to deploy the Duo MFA solution?Thanks!

jcuni by • Level 1
  • 78 Views
  • 5 replies
  • 0 Helpful votes

Update nexus 3k - problem - grub

Hello everyone!I have very bad problem. I can not solve problem with update my Cisco Nexus 3064.Before upgrade I had version: 6.7I upgraded (installed) to nxos.7.0.3.I7.8.binAfter installing and rebooting sw, I saw:    [ 0.000000] Fastboot Memory ...

DNA Center - NCSW10603: ISSU activation of image

I've been running into issues regarding ISSU upgrades using DNAC on the 9400/9500 series switches. For some context, I've been using DNAC for bulk switch upgrades and for the most part, all has been well. However, whenever it comes time to use the IS...

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emasters by • Level 1
  • 851 Views
  • 5 replies
  • 1 Helpful votes

Mac Access list on catalyst 1000 series

Hi! Is it possible to block icmp traffic(ping) by creating mac-access list on switch? If its not possible why? I have 2 pc 1 voip  and switch. Those pcs cant ping eachself but they can ping voip. How to do that with mac access list.

Problems with Call-home in c3850

Please can help me stopping this logs. i have tryied no call-home, and no service call-home, the logs persist.Nov 12 13:41:53: CALL-HOME-DETAIL: rate limit timer: httpc_enabled 1, status 0, sid 2Nov 12 13:42:53: CALL-HOME-DETAIL: call_home_process_ti...

Resolved! Cisco AnyConnect VPN Client 3.0 - Failed to load preferences

Hi,I have the problem, that when I want to connect to the VPN Gateway (ASA 5510) with the AnyConnect Client 3.0 I will get the error "Failed to load preferences" when I try to connect via the SSL Portal of the ASA, everthing works fine... I have trie...

romueller by • Level 1
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  • 5 replies
  • 0 Helpful votes
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