About Stephen Berk

Stephen Berk · 02-27-2014

I have a Nexus 7k with a load balancer connected on trunks. The trunk to the outside port of the lb carries vlan 223 and the inside carries vlan 224. The Nexus has layer 3 SVI's for both vlan223 and vlan224. The lb has IP's for both vlans also.interf...

Stephen Berk · 06-06-2008

I'm designing a metro fiber ring (1000 mbps) that will have a 9-10 hop diameter. IEEE says no more than 7 hops, but a colleague says that was recommended with 10 mbps links in mind. Any thoughts on STP failing if I have the extra hops on the gig ring...

Stephen Berk · 05-22-2008

A customer network had a 2620 router trunked to a 2950 switch with some hosts in vlan 2 and some with no access port assignment. Hosts on the native vlan were able to access (per user reports) a server on vlan 2 until we replaced the 2620 with a 3750...

Stephen Berk · 06-11-2014

Page 20-21 of this switch guide has a chart that says h/w NAT isn't supported. The NX-OS config guides I've seen that mention NAT do so in the context of IPv6 saying IPv6 eliminates the need for NAT/PAT, so I wouldn't count on seeing NAT in the 7k's....

Stephen Berk · 02-28-2014

"That said i am still struggling to see why the inside subnet has an SVI on the L3 switch if the load balancer is meant to be routing between those subnets."That got me to thinking and was able to find the problem. The L3 interface on the switch in p...

Stephen Berk · 02-28-2014

The idea is to force the traffic destined for the "inside" of the load balancer through the "outside" interface. I don't understand why it's working though. A connected interface should have an administrative distance of zero and be preferred over a ...

Stephen Berk · 05-23-2008

Tunnel mode encapsulation mismatch perhaps? Looks like you have GRE on one and IPIP on the other.

Stephen Berk · 05-23-2008

I'm not familiar enough with CatOS to speak intelligently about this, and without an accurate network diagram, I feel like I'm shooting in the dark with any suggestions. You're best bet is to spend a few long days learning about trunking and SVIs.The...

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Nexus 7k installs static routes to route table even if connected interface present?

Does link speed affect STP diameter consideration?

MLS SVIs enforce correct subnet mask, 2620 doesn't?

Page 20-21 of this switch

Re: Nexus 7k installs static routes to route table even if conne

Nexus 7k installs static routes to route table even if connected

Re: Connectivity Problem

Re: Creating layer 3 link among 6513 CatOs with MSFC (IOS)