Switching

Hello I have a router C891FW-A-K9 and need a power supply.  Can someone tell me the compatiable specs/model number for a power supply?   Thank you.    

I have two cisco 3850 mode ws-c3850-12XS-E with to 4 10G network module.I have setup cisco stackwise virtual on those swithes via to 10G link as SVL link and one 10G as dual active detection and two switches have been stacked. I connect two 1G link f...

Have CAT2950s, 3550s, & 3560s that have converted from VTP client mode to transparent mode & used config mode instead of vlan database to make the changes.Now, am unable to add vlan using config mode nor vlan database and am rx the following error:"...

hey guys, so im no expert and i would really appreciate any help  so i need to assign each port on switch 3 (the one connected to the pcs) with multiple vlans so instead of making them access ports i made them trunking ports and i allowed the vlans i...

Hi I am getting cpu hike in 3650x     PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process 4 1267300 56731 22338 11.34% 1.61% 1.31% 0 Check heaps 145 10688400 2010542 5316 9.26% 9.38% 9.72% 0 Hulc LED Process 66 4284063 641473 6678 4.15% 4.32%...

Hello Cisco Support Community--I have this topology:  (Actually, 1 and 2 and 3 and 4 are connected with two parallel links--one is a Port Channel and the other is a regular Gig E).  Here's what I want to do:     Create a two VTP domains, with one VL...

we have a old router R0, running ospf and bgp with backbone router Rb, R0 is backup path for bgp. we have another router R2, which is bgp primary path router. R0 has two interface, one with service provider, the other is lan interface connected with ...

Hello all,   I need a little help creating a ACL that only allows internet access for our guest wifi users. The guest WiFi range is from 10.1.160.3 to 10.1.175.254 We VLAN everything and use the VLAN number as the 3rd octet in the IP address. For exa...

Hi, our customer has CMS 2.2.5 installed and can call from lync to meetingroom. In CUCM a Spark RoomKit is configured. My question is, can the customer call from lync client a specific Spark Roomk kit?   The Meetingserver is only accessable via LAN, ...

Hello, our customer changed his old HP Switches to new cisco Switches. Now with his old wireless lan Controller and APs he has some issues with 802.1X authentication.   In the Wireless Controller we see now IPv6 Adresses. THis is the only difference ...

I am planning to configure Multilink MLP and started to read some related materials. I found out there are some options to configure Multilink MLP. But I am confusing which type should I choose. I am going to use 3 Gig interfaces as a bundle, so whic...

Hi all , whats the difference between and crc and an fcs error ?

Hi,   I have a problem that I don´t undertand that is happening in my network.   I have one architecture like the bottom picture. PC1 and PC2 have internet. However when I do one ping from PC1 to PC2 I have no answer. If I do one ping from L3 switch ...

I am getting the following errors in my system logs any ideas?   dnsmasq: FAILED to start up dnsmasq: bad IP address at line 17 of /var/etc/dnsmasq.conf