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I'm trying to create a encrypted tunnel use GRE over IPSec, but I am unable to get it to work. I believe I'm messing up my ip routes and getting them confused. My tunnels work before I try to encrypt them, but when I attempt to do it, I can no longer...

CavanP11 by Beginner
  • 5 replies
  • 0 Helpful votes

Resolved! IPv4 header length

(Sorry if this is the wrong place to put this)Hello,I'm studying for the CCNA, but got confused when reading about the IPv4 header. I just found a random picture of a IPv4 header, but as you can see at the bottom of the picture, it says "IPv4 Frame F...

Skærmbillede 2022-02-14 095206.png
trane.m by Beginner
  • 8 replies
  • 0 Helpful votes

Hello, I have configured zone based firewall & nat overload on C1121 IOS-XE router. Internet stops working when I apply access-list to restrict inbound traffic on WAN interface. It's mandatory to restrict access from outside on WAN interface. Appreci...

vthbox by Beginner
  • 4 replies
  • 0 Helpful votes

Hi everyone. I have a route-map with pbr rules on my asr router. There is a need to process with "and" logic two different acls with one route-map rule. But when i try to configure two match ip address rules router processes it with "or" logic. Also ...

petro-2005 by Beginner
  • 19 replies
  • 5 Helpful votes

Hi , I copied an IOS file from the usb to flash ,it was successful ,but can't find the IOS in flash.Router model : cisco c1111-8pI am upgrading IOS since tacacs not working in the existing iOS 16.12     

arunec539 by Beginner
  • 1 replies
  • 0 Helpful votes

Hey guys, I am trying to get a link at 50G with fec_type = standard.My steps are as follow - enable conf tcontroller Optics 0/0/0/20no breakout 4x10no breakout 4x25breakout 2x50commitexitinterface FiftyGigE 0/0/0/20fec standardno shutdowncommitexit I...

rvDear all maybe you can help meMy VPN connects perfecft but on day to another shows connected but without seen any PC/server from the other side I have an rv320 firmware VPN settingsvpn, rv340, rv320NAME XXX2XXX.XXX.XXX.XXXWAN2IPSEC aes128-...

jpbxpertis by Beginner
  • 13 replies
  • 0 Helpful votes

Buenas noches, espero se encuentren muy bien. Nuevamente acudo al apoyo acostumbrado por parte de ustedes. Necesito salir de una duda con respecto a implementacion de OSPF en una WAN que interconecta varias sedes. Entiendo  el funcionamiento de OSPF,...


Hello all, I am having issues with a Cisco 897 Router connected directly to a provider ONT. We have a 600Mbps link but it seems like the router is just able to reach 200-250Mbps as much. I am trying to find in the router data sheet if I can find anyt...

morabusa by Beginner
  • 10 replies
  • 0 Helpful votes

Hi Guys, I have this topology for IPTV stream, Streamer GW >>>>>2960s switch>>>>Core sw6807XL>>>>2960s Switch>>>>VLC Streamer in VLAN 181:description ##IPTV STREAMER##ip address pim dense-mode VLC in VLAN 102: ip address 1...

Hello, I work at a fintech company, and we provide our clients with real-time market data through our nexus 3548 switches. We have been suffering from a significant level of packet drop, and despite the fact we have been troubleshooting on this so lo...

Our company has a cisco 2911 for edge router . It's version  c2900-universalk9-mz.SPA.150-1.M5.bin. It only has nat, default route and some access-list for it, .recently  it occasionally crash, about once / two months. could some help have a look at ...