Switching

We have an architecture with interconnected LAN switches with multiple VLANs on each. In some cases a VLAN will have an IP interface (SVI) created, but in other cases the switches just have the VLAN, with access ports on the VLAN and the uplinks trun...

Hi, I have a 6509E platform with redundant supervisor cards. I noticed one was in ROMMON (not sure how it got there) and when I boot it back up it had an older IOS. I copied the new IOS that's on the active card. Do I just need to reload the (col...

This command has been mentioned in one of my BSCI textbooks; and I have further googled it, and looked it up in the configuration guides here on cisco.com.It still.Doesn't.Make.Any.Bloody.Sense to me.Has anyone come across or used this command in rea...

I have several (to much) Error-Messages of a c6500-linecard which is logging ~every second with serverity 2 to a external syslog server. (it is planned to replace of the linecard in some days)Is there any possibility/way to filter only these message ...

Dear expert, I am facing problem with ospfone of the route 192.168.145.80/28 is there in ospf database but not in the routing tableFew output for referenceMPLS>sh ip ospf database summary | begin 192.168.145.80 Link State ID: 192.168.145.80 (summary...

I need to determine if I should go with a (new) L2 switch and mult VLANS and use router-on-a-stick for intervlan routing. Its conducive to what the cust has at his multiple sites.Or should I convince him to go with a L3 switch to the router instead ?...

Hello I need to know how can I configure a trunk port in switch 3750 and sw linksys SGE2010P?What need to configured over linksys to connect to sw 3750. I have vlan Voice and Data. How this work?anyone can help me?

Hi,we build with two VS-S720-10G a vss cluster. (IOS 12.2.18sxi1)with the command "sh mls stat" we see the following output Statistics for Earl in Module 1/5L2 Forwarding Engine Total packets Switched : 64979858519L3 Forwarding Engine...

I'm seeing many interface both 1gb and 10gb and EtherChannels with large numbers of output drops being logged.The utilization on these interfaces (particularly 10gb) is relatively low.What might be causing the drops?How might I troubleshoot/resolve t...

I am brand new to Wireshark. I want to capture some BGP opens and updates, however, it is capturing absolutely everything that comes over the switch; including BPDU's every 2 secs. None of the built-in filters seem designed to filter out STP traffic...

Hi, I am aiming to make 4507 boot from new image. Do you know what is wrong below? See that I set my new image correctly on "boot system", but the new image name is not reflected when I do the "show bootvar". Any ideas?MY4507(config)#boot system flas...

Hi, Can anyone help on this . Actually i have configured a 2960. In line vty 0 4 we cinfugured transport input ssh. But it is login in telnet also.What was mistake i have done. Can anyone rectify this... I need to login in SSH only.Below is the confi...

G'day Experts,I have a private network: 192.168.1/24I have a single public static IP address from my ADSL ISP.I have a server which hosts a DNS with a private address 192.168.1.10 in my private network.I have created a NAT 1:1 to my private server 19...