Switching

Hello, I am getting these warnings on Cisco 2960 switches that connect up together using multi mode fibre. The cables are no longer than 150m between the switches. The switches are using GLC-SX-MMD SFPs. The warnings: %SFF8472-5-THRESHOLD_VIOLATION: ...

i try to make link aggregation group between Cisco sg300  switch. In these switch between two link first POINT TO POINT LINK and second link fiber optic.Both link active but when i shut the port of fiber optic then communication has been stop on the ...

I have 2 hosts connected to the same switch. Each host it set to execute an FTP at 9000 BytesSwitch ports are both configured for 2500 Bytes What happens when a 9K byte frame is received on the switch interfaces? They drop them, right?

I have been placed into a network role for a customer while my expertise is much more desktop / server oriented.  I do have my CCENT and have been working on the CCNA so I am not completely lost, but I cant figure this out and the deadline is approac...

What is the Best Switch to use with 2-4 10 gig SFP+ uplinks and gig ethernet interfaces?I have looked at the 3850 Series switches, 4900 series and the 3900 series. any ideas would be greatly appreciated

Hi,I have a question about how to influence the routes learned from a specific EIGRP neighbour. We have one multi-access vlan with 2 core switches and 2 routers. Switch A and Switch B have the same routes (shared VLANs). Router A and Router B have al...

Hopefully this would help to all of you that have packet loss or TCP retransmissions, due to the fact that the ARP timeout is an absolute timer and not an activity timer like the MAC Address Table Aging Time. This is an expected behavior in this type...

 Having issues  with new core on 7710's upgraded from 6.2(8a) to 6.2(10) running ACL's on all SVI's, Netflow, and DHCP Snooping with one VDC added along side the admin VDC with 2 F348 line cards and dual-sups.  The 6.2.10 upgrade was due to TCAM erro...

We just got installed a METRO LINK between our primary and secondary data center (Site-A <> Site-B) I would like to be able to route data replication between these two sites over that link, instead of going over MPLS.  We run EIGRP internally and BGP...

Hi,I am testing on lab equipment (2 Catalyst 3550 and 1 Catalyst 3560) HSRP version 1 and 2.I successfully created a load balancing between the two Catalyst 3550 on a couple of vlans (11 and 12) on ver 1now, just adding the command "standby xx versio...

Hi there,I have an C4900M with twingig converter and SFP GLC-LX-SMD in. So the SFP supports DOM function. It is running on 12.2(53)SG2.I would to the see the optical power level of the SFP, but it does not recognize 'show interface transceiver' comma...

Hi, I have a problem, so hope some one can help me :) Have a site with a Cisco 892 router, that have local LAN 192.168.2.x/24 and access to public net.But need to make a new VPN tunnel to a other company site (172.23.x.x/16), but need to come with so...