Switching

Hi. I first would like to point out that i did not configure these switches, i inherited them. So here goes.We are getting a lot of out discard errors on all our edge switches. Our edge switches are all 2960x's and are stacked (there are about 3 or 4...

I found one below warning message on syslog in out network: "10-07-2015 08:09:38 Local7. Warning 10.20.10.28 Oct  7 2015 18:02:09 SECURITY-GF-SW ARP/4/ARP_IPCONFLICT_TRAP:OID 1.3.6.1.4.1.2011.5.25.123.2.6 ARP detects IP conflict. (IP address=10.20.10...

Dear all experts,We are currently facing high CPU in our core switch Catalyst 6509-E (VSS).. Kindly refer to attached for details.. Appreciate if you could help us on this matter.. Thank you very much

I have access to switch only, I can't access WLC, currently I have three AP on the wall, my DHCP is in windows 2008 server. my laptop get IP: 10.30.7.123, which belongs to wifi vlan, how to check which AP i am using (for example AP's IP address)? 

I am moving from the 3750 series to the 3850 series and wanted to know if I need to use the mgmt-vrf port. From what I have read it is the out of band port and I use the vrf port on some of our Nexus switches so I am familiar but would you use that m...

Hi I am getting duplicate ip address error message when setting up ospf between two routers. I checked several times and i did not find there duplicate ip address. Here is topology R3(e1/0) ------(e1/1)R1. at the moment, the two routers cannot have o...

my core switch is connected to checkpoiint, checkpoint got three IP address for eth1(external), ether2, ether3 (DMZ) in core switch running config, which ip I should put in ip route 0.0.0.0 0.0.0.0 IP? 

Hi All,When running OTV between two ASR 1k routers at a single site, do you need to enable Spanning Tree on the ASR 1k routers?I read somewhere that this is the case but wanted to check with folks who have set this up or if anyone from Cisco can advi...

Hi All, I'm experienced with most of the Cisco LAN switching portfolio but had a question asked of me about setting speed and duplex on a 6880-X switch.  The customer is not using Instant Access clients, just the 6880-X chassis in VSS mode with a mix...

Hi I am configuring OSPF in C3645. It is strange that I got error message and failed to configure OSPF. Please see belowR2(config)#router ospf 1R2(config-router)#*Mar  1 00:37:17.671: %OSPF-4-NORTRID: OSPF process 1 cannot pick a router-id.  Please c...

Hi Guys,I have a query regarding Layer 2 MTU in switch.SW-3750#sh int fa1/0/1FastEthernet1/0/1 is up, line protocol is up (connected)   Hardware is Fast Ethernet, address is 0015.6264.3303 (bia 0015.6264.3303)  MTU 1504 bytes, BW 100000 Kbit, DLY 100...

We have a new 6807 that we are looking to install, but before we do, I need to set up a nat between two vlans.  This is in place and working, but it is extremely slow (about 200KB/s) and we need to get that sorted out before we move forward.  Nether ...

Just got a pair of Nexus 7710's looks like I didn't order enough power supplies, build my BOM (build of materials) on power calculator, and want to know if someone can explain the difference in (Power Supply Redundancy Mode vs. Full Redundancy Mode)....