Not sure were to start here, but any useful Cisco commands/ideas would be great.
On our LAN we have 2 gigabit Cisco 3750's on our network that are just for our Exchange 2007 servers, from each Cisco switch we have 2 trunk cables going to one core Nortel 8600 switch and the other 2 trunk cables fromt he 3750 to our other Nortel 8600.
(THe was all setup by an external Nortel engineer and a Cisco engineer).
Now any users on the LAN which are on the Nortel edge switches and any server on the core Nortel switch can ping all the Exchange servers and virtual cluster IP's.
Now the Exchange 2007 consultants have created a NLB cluster (Microsoft Network Load Balancing cluster) with the Exchange servers on the Cisco switches. All look great and you can ping the NLB virtual IP's from the Exchange servers and any PC connected into the Cisco switches.
Now the issue, some users and servers on the Nortel's can ping the NLB and some can't, they sometimes they can, seems to be no common reason or maybe a trunk/routing issue. Thing is everyone can ping the server IP's all the time which are in the same VLAN (id 1028).
I have attached the configs of the 2 3750's maybe someone can add anything so I can speak to the Nortel and Cisco guys?
Ports 12 and 24 are the trunk ports to the Nortel.
The Exchange guys say the NBL is setup fine as anything on the Cisco devices have no issues, plus the Nortel guy says they set the Nortel trunks up fine as they can ping the servers...etc :)
Also the Nortel guy said it might be worth setting the Cisco switches to load balance on the Ether channel using the source mac address only - mean anything to you?
In your case, since the source IP will always be the NLB IP, and the destination MAC always your gateway. You should use dst-ip or src-mac. You need to chose the one that changes the most to optimise the load balancing.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.