The Journey of a Network Engineer:

6500

1

February 23, 2013  12:34 AM

Server NIC teaming to multiple switches



Posted by: Sulaiman Syed
6500, Bandwidth, LACP, Nexus, Nexus 7000, NIC

Server network redundancy been a hot topic for a while now. It is an ideal situation when we imagine that a server can be connected to multiple switches, with multiple links to provide higher bandwidth, and fault tolerance. But doing so, creates multiple challenges from both the network and...

February 16, 2013  2:17 AM

How to configure VSS?



Posted by: Sulaiman Syed
6500, 6509, Cisco, cost, datacenter, design, Firewall, FWSM, server farm, VSS

Virtual Switching System (VSS) was one of the early technologies that introduced in the datacenter world to eliminate spanning tree protocol (STP). Thus, giving networks and servers multiple active links with non-blocking ports architecture. The configurations are quite simple and straight...


January 1, 2012  8:05 AM

Moving from Explicit Proxy to Transparent Proxy – part 3



Posted by: Sulaiman Syed
6500, BlueCoat, Cisco, design, network, packeteer, packetshaper, paloalto, proxy, transparent

While we had overall idea of the design direction, we have identified other points that were integrated into the final design. The diagram below shows the almost finalized design.


July 20, 2011  8:20 AM

Introducing Cisco Catalyst 6500 Series Supervisor Engine 2T



Posted by: Sulaiman Syed
6500, Catalyst, Cisco, Engine, MSFC5, multilayer, PFC4, router, S2T, SUP720, Supervisor, switch

Cisco very recently introduced the new SUP engine for the much trusted Catalyst 6500, the Supervisor Engine 2T (S2T). It is much welcomed sup...


July 20, 2011  7:13 AM

Cisco Catalyst Sup720 V S2T



Posted by: Sulaiman Syed
6500, capacity, Catalyst, Cisco, core, distribution, Nexus, router, S2T, SUP720, switch, vs

Cisco has recently introduced the S2T. We ran a comparison from the prospective of backplane capacity...


May 30, 2011  4:35 AM

GRE Tunnel ARP entry never times out! – part 2



Posted by: Sulaiman Syed
6500, AP, ARP, Cisco, GRE, mn, SUP720, Tunnel, wireless, WLSM

I have been trying to figure out why the APR entries don't timeout as they should do naturally from the tunnels. As it seems, the natural time of 4hr is...


May 24, 2011  5:56 AM

GRE Tunnel ARP entry never times out! – part 1



Posted by: Sulaiman Syed
6500, AP, ARP, Cisco, dhcp, GRE, Tunnel, wireless, WLSM

I would like to clear the ARP entries automatically from the GRE tunnel made by the WLSM to the AP. here are the configurations of the tunnels.

interface Loopback1 description tunnel_source ip address 10.x.x.1 255.255.255.255

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May 12, 2011  2:47 AM

Nexus 7000 Vs Catalyst 6500 (Backplan capacity)



Posted by: Sulaiman Syed
6500, backplan, Bandwidth, capacity, Catalyst, Cisco, Fabric, Line Module, Module, Nexus, Nexus 5000, Nexus 7000, Sup, SUP720, Supervisor Engine, switch

Cisco has introduced Nexus. Nexus are the new line of data center switches. They come in the variables of 7000, 5000, 2000, and lastly 1000. Nexus 7000 with their...


September 21, 2010  5:02 AM

Troubleshooting Packeteer 6500



Posted by: Sulaiman Syed
6500, BlueCoat, CGF, license, packet, packeteer, shaping, troubleshooting

Today's topic is about packeteer. Blue Coat's packet shaping device. We have packeteer 10000, 7500,and 6500. So one day, the 6500 decided to crash and not boot up! After spending hours and hours reading forums, and support documents. We just had to try everything to solve it ourselves. and yes,...


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