thanks for the reply as always.   RE: "ACI is not a DCI solution. ACI is a SDN product for DC." Cisco are pushing ACI as a replacement for OTV so are saying it is a DCI technology, just under another name? ... View more

Hi many thanks for the response, what's interesting for me is that Cisco is pushing ACI to use instead of OTV for DCI, but currently releases only support 50mS latency, this is a show stopper for DCI, however the roadmap for ACI 4.x is to deliver between 150 to 500mS. ... View more

this may be caused by moving from HSRP v1 to V2 as the virtual MAC addresses change, you would need to flush the ARP tables on the hosts using the 7702 as default gateway to fix this. ... View more

Hi. the SE communication was not directly involving myself, but was between other members of the team and via email, the SE has since moved on too. We have both c4500x and c3850's (as an aggregation layer)  connecting to the c3650, it was a bit of future proofing with the purchase of the QSFP convertors ... View more

Thanks Reza, I had seen the URL in your reply previously, but our Cisco SE has stated these could be used and our supplier didn't query this either when we placed an order, however now we have these on site we can't get them working - so I think we have been "sold" in error? ... View more

A word of warning Dynamic routing over vPC is now support beyond 7.2, but on F-series modules only. Dynamic Routing over vPC Dynamic Routing over vPC feature is supported only on F2E and F3 series modules. This feature enables L3 routing protocols such as OPSF to form adjacency with the two vPC peer chassis. The equal routing cost matrices must be configured on applicable interface on each of the vPC peers, failure to do so can result in blocking the traffic. Asymmetric routing feature has to be implemented to address this issue and to configure Dynamic Routing over vPC. Additionally, when Dynamic Routing over vPC is enabled a warning log message is printed. ... View more

Hi there in my opinion dual home is a lot more trouble that it give you in benefits, I have designed and installed Nexus at several companies and they have all decided to go single home in the end. Cisco support dual home, but if you press them they prefer single home as it's easier to deploy and support long term. ... View more

Hi Vartanian how are you getting on with your 7702? We are thinking of deploying them too, but I want to know if you can virtualise them i.e. 2x chassis and I know they don't support fabric modules (no fabricpath) but do they support multiple VDC's? thanks in advance. ... View more

The main differences between LAN Base and LAN Lite is that switches running LAN Base are a lot more feature rich such as:  • Gigabit Ethernet connectivity in 8-, 24-, and 48-port configurations  • RPS support and support for a wide range of SFP transceivers  • Enhanced security through Layer 2-4 access control lists (ACLs), DHCP Snooping, and more extensive Network Admission Control capabilities such as Web authentication and 802.1x enhancements • Additional QoS capabilities: The LAN Base IOS supports policing, class and policy maps, differentiated services code point (DSCP), AutoQoS, and configurable queue weights, buffers, and thresholds  • Higher network-level availability with features such as Flex Links and Link State Tracking  • •Increased number of VLANs (256) and other enhancements such as IPv6 Host, MLD Snooping, LLDP-MED, RSPAN, MVR, DHCP Option 82, and IP SLA (responder)  IP LITE is a subset of IP service license with limited functionality.  Here is a list of what some of the features are: ●    Routing Information Protocol (RIP) v1 ●    Routing Information Protocol (RIP) v2 ●    Open Shortest Path First (OSPF) v2 Routed Access ●    Open Shortest Path First (OSPF) v3 Routed Access ●    Enhanced Interior Gateway Routing Protocol (EIGRP) stub ●    Equal-cost routing ●    Hot Standby Router Protocol (HSRP) ●    Protocol Independent Multicast PIM (Sparse Mode, Dense Mode, Sparse Dense Mode, Source Specific Multicast) stub ●    Virtual Router Redundancy Protocol (VRRP) for IPv4 ●    Private VLAN ●    IPv6 First Hop Security source guard ●    Per-VLAN and per-port policers hope this helps? ... View more