Switching

Hi,A switch keeps giving below messages ;%OSPF-5-ADJCHG: Process 77, Nbr 10.58.21.122 on Vlan101 from LOADING to FULL, Loading Done%OSPF-5-ADJCHG: Process 77, Nbr 10.58.21.122 on Vlan102 from FULL to DOWN, Neighbor Down: Dead timer expiredthe configu...

Hi all, I was viewing the 3560x switch datasheet and i need network module C3KX-NM-10G. I have dark fiber with over 12 km distance to i guess i will be needing SFP EX for single mode. Can someone guide me which sfp i required for this distance on 10 ...

I'll preface this by stating I'm very much a cisco beginner.  I know the basics and that's about it so here goes...I'm in a situation where the network just doesn't seem right.  Certain tasks are unusually slow - like copying large amounts of data fr...

I have a Cisco ASA 5505 with a fairly simple set up. Few VPN tunnels and only 3 open ports for applications. I have entered the following linesstatic (inside,outside) tcp interface 9002 10.0.3.230 9002 netmask 255.255.255.255access-list outside_acces...

We have a number of 1721 routers with T1 WIC ( DSU/CSU) using point to point T1 links. Recently we had line issues with a T1 going down for awhile. When the T1 issue was corrected the routers could not re-establish the protocol link. This required th...

I'm wondering about mtu configurations on L2 and L3 interfaces.  Does the configured value (or displayed value in "show" output) represent the maximum size of the payload or the maximum size of the frame/packet including payload and overhead?  Also (...

I have a  WS-C3560G-24TS-S running  12.2(50)SE5 with IPBASE. I have been told that the functionality i seek (multicasting) is only available in the IPSERVICES version of the software. I was reading up on upgrading and saw that i needed to do a show l...

Hi,Can anyone please explain , why we have to allow vPC vlans in vPC peer link.Thanks                  

Greetings. Something seemingly so simple is not working. A router and a Nexus are not seeing each other via CDP. I have a 2921 router connected to a Nexus 7000. Everything works fine, except for some mysterious reason CDP does not establish. Yes, it ...

I have a 6500 serious switch that one port (portfast enabled) hold a  server .This server has sort of a Cluster configured for high availability . During primary server failure the failover server acquires the cluster IP address (ie virtual IP).Clus...

hey.i am trying to monitor some UPS equipmeant,for that i am using a cisco 2960 switch and when the UPS is down it sends a L1 loop.when the switch detects the loop the int in which the UPS is conected to will get a link and go up.now my problem is th...

What is a good replacement for the 28XX / 38XX router that will support ATM/IMA?