About sandu_nastas1

sandu_nastas1 · 02-27-2013

Given : - 2 Datacenters + 1 Users Site. - Every site has a Layer 3 switch as a core. Task :To interconnect the 3 sites in a triangle as in the picture attachedThe interconnection between Datacenter1 and Datacenter2 has to be a L2 extension in order t...

sandu_nastas1 · 11-08-2012

Hello, Here's the issue: There are 2 datacenters (DC1 and DC2) and 1 users site. They are interconnected as following: - DC1 - DC2 (Layer 2 extension). Needed for clustering and high availability (TRUNK Link)- UsersSite - DC1 - Layer 3 (VLAN 10) (ACC...

sandu_nastas1 · 02-17-2012

Hi there, The scenario is the following : there are 3 distant sites that need to be interconnected as in the image attached. On every site - there are 2 layer3 switches. 2 of the sites are interconnected via 2 telecom links an the third is connected ...

sandu_nastas1 · 08-24-2011

Hello, I'm new to VRRP and I have a question that may sound stupid, but I couldn't find the answer in the InternetIf we consider the topolgy attached. We want to transfer info between R1 and R4 using R2 and R3. R1 has default-gateway: 192.168.1.3 and...

sandu_nastas1 · 03-05-2012

Hi John, This may be worth trying. Although it seems a little too complicated. My idea was to adjust spanning tree priorities in order to force STP block different ports for different VLANs. But anyways, I think we'll use the VSS with 4500s that shou...

sandu_nastas1 · 02-20-2012

John, the routing takes place on the switches. You're right, there isn't just one vlan spanning all three sites. There are about 10 vlans in the whole network. But they need to be spanned across the interconnection trunk links, so there would be the ...

sandu_nastas1 · 02-20-2012

Heh, Thanks for the response. Nice article. The problem is, though, that OTV exists only on Nexus and 6500 series. And we'd like to use 4500 and 3750 switches, cause the network isn't this big (about 15 servers and 150-200 users)I even thought about ...

sandu_nastas1 · 02-17-2012

Hi, Thank you for the replyThe reason for extending Layer 2 is data replication and Clustering. We have some clusters that need to be in the same broadcast domain for high availability reasons. So there is no question about layer 3

sandu_nastas1 · 08-25-2011

However - I still have one question: in this case - would it be correct to make the 2 interfaces of every router - members of the same VRRP Group ? or different groups ?.For example: R2: F0/0 - VRRP 1 ; F1/0 - VRRP 2 R3: F0/0 - VRR...

Member Since	‎08-24-2011 09:22 AM
Date Last Visited	‎08-18-2017 03:57 AM
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3 remote sites interconnection issue

HSRP and STP Coexistence over a L3 Connexion

Layer 2 extension between 3 datacenters with load balancing

VRRP: What happens if an interface fails ?

Layer 2 extension between 3 datacenters with load balancing

Layer 2 extension between 3 datacenters with load balancing

Layer 2 extension between 3 datacenters with load balancing

Layer 2 extension between 3 datacenters with load balancing

Re: VRRP: What happens if an interface fails ?