Routing

Spanning tree was configured and enabled on C1111 router, but show spanning tree shows no spanning tree information as below. Does anyone know what the issue is and how to fix it? Thank you. router#sh run | s spanningspanning-tree extend system-idspa...

Hallo All,Whenever I connect to a specific server (just this one particular one) via VPN, the connection is dropped but this doesn't happen when I connect directly via LAN. I'd appreciate your input on what could be the possible reason for this. By t...

Hi everyone. I am facing a problem. I want to connect my 3850 to service provider through upe which is installed in our location through fiber. 3850 will also connect to aruba controller. The service provider has given us a customer ip and gateway in...

HelloI want to use a Nexus 5600 to do basic routing in several VLANs but it doesn't work in IPv4. On the contrary it works without any problem in IPv6 so I don't understand why.I have activated the interface-vlan feature on the device and I have crea...

  The NDP protocol makes use of the solicited-node multicast address.   A host joins its own solicited-node multicast address group both localy (netsh int ipv6 show joins) and on the layer2 domain (a wireshark trace shows that a host configured with ...

Hello to all! I would like to ask if anyone can explain the need to specify WAN vs LAN interface setting in router's WEBUI. I was installing this router and experienced some routing issues. When GigabitEthernet0/0/0 (physical WAN port) interface was ...

I need to capture traffic in local VLAN on Nexus9000K, start wireshark on my laptop, ip address of this laptoop is 9.9.9.9. Also I want to capture only icmp and src host 10.0.0.0/24. I try to do this: Websiteswitch(config)# monitor session 10 type er...

HO router getting ssh request from outside so i want to block the ssh traffic from outside but i want to allow ssh traffic from branch side and tunnel between branch and HO so how to configure ACL on HO router so i block the ssh traffic from outside ...

Looking for a way to handle printing services and voice services in one device. When two services are on separate VLANs but a device needs both services, what is the proper way to handle this situation? One way was setting up an Inter-VLAN configurat...

Hi Cisco Support, I have a question to ask. Recently I performed a firmware upgrade for my Cisco 3850 Switch from 03.06.08E to 16.6.9 . After the firmware upgrade, I found out that the switch is unable to synchronize to my NTP Server, 802.1x stops wo...

High CPU spikes occurred occasionally on C881-K9 router. After checked, the high cpu usage is caused by SNMP ENGINE. Does anyone know why SNMP ENGINE cause the high cpu usage and how to fix it?Thank you. CPU utilization for five seconds: 99%/0%; one ...

Hi there I will like to check, before I change the route I can rdc to my widows XP pc but after I change it to a new routs ISR4451-X/K9 I unable to rdc to my widows xp pc, I have try to ping the IP address and the gateway is all good can you help me ...