How to configure reduantant DATA link Connection in site to site
We have a direct Dark Fiber DATA connectivity between our HQ and branch. Also our ISP have given us Fiber DATA link as their free service. Now we want configure both DATA link as redundant i.e. if something goes wrong with our own direct data link, we want automatically switch to our ISP's data link without any need of user interaction.
The switches used on both sides are catalyst 2960S with MMD SFP connectors. The internet is over the fiber and terminated at our branch office and it is been configured through the DATA link to the HQ
The switches used on both sides are catalyst 2960S with MMD SFP connectors. The internet is over the fiber and terminated at our branch office and it is been configured through the DATA link to the HQ
ASKER
The site A (where the internet from ISP is been terminated) has CISCO LAN router with 3 different sub nets. The site doesn't have any L3, rather L2 Switches only.
The Site B (head office) has L3 and L2 switches (D Link). running on 4 different sub nets.
Both site are inter VLAN routed. I am attaching the current config files from our CISCO L2 switches that are used for DATA link. In the site A config, there are 3 VLANS (Management, Internet, and DATA), where internet VLAN is connected to ISP's Internet Router.
192.168.20.40-Site-A.txt
192.168.20.30-Site-B.txt
The Site B (head office) has L3 and L2 switches (D Link). running on 4 different sub nets.
Both site are inter VLAN routed. I am attaching the current config files from our CISCO L2 switches that are used for DATA link. In the site A config, there are 3 VLANS (Management, Internet, and DATA), where internet VLAN is connected to ISP's Internet Router.
192.168.20.40-Site-A.txt
192.168.20.30-Site-B.txt
can you share a diagram for your setup.
as far as i can see on the configuration you got
3 VLANs, can you identify which is the Internet, DATA, Management?
VLAN20
VLAN100
VLAN200
What I would like to identify where is the default gateway for each VLAN. if you can share a diagram and identify the physical connections between sites (Dark Fiber & ISP fiber) and the internet router, that would be easier for use to understand the current setup
as far as i can see on the configuration you got
3 VLANs, can you identify which is the Internet, DATA, Management?
VLAN20
VLAN100
VLAN200
What I would like to identify where is the default gateway for each VLAN. if you can share a diagram and identify the physical connections between sites (Dark Fiber & ISP fiber) and the internet router, that would be easier for use to understand the current setup
ASKER
The configuration details are from the existing L2 switches used for DATA Link Only.
The following are the details of them in addition to our LAN setup at each sites.
VLANs in the DATA Link L2 Switches: VLAN 20 & 100 are in switch port mode access and VLAN200 is in trunk mode.
VLAN20 - management VLAN (accessing the router)
VLAN100- Internet
VLAN200 - Data.
..........................
Site A:
VLAN100 is connected to ISP's Internet Router. (internet is been terminated at site A)
VLAN200 is connected to our LAN Router.
..........................
Site B:
VLAN100 is connected to our Front End firewall.
VLAN200 is connected to our DLink L3 Switch.
..........................
Other Inter VLAN/Routes Details:
CISCO LAN router at Site A- has 3 different SUB nets (static route)
D Link L3 switch at Site B- has 3 different VLANS.
The default gate way for the CISCO LAN router and D Link L3 switch is 192.168.20.1/24
..........................
Hope all these details would help you.
The following are the details of them in addition to our LAN setup at each sites.
VLANs in the DATA Link L2 Switches: VLAN 20 & 100 are in switch port mode access and VLAN200 is in trunk mode.
VLAN20 - management VLAN (accessing the router)
VLAN100- Internet
VLAN200 - Data.
..........................
Site A:
VLAN100 is connected to ISP's Internet Router. (internet is been terminated at site A)
VLAN200 is connected to our LAN Router.
..........................
Site B:
VLAN100 is connected to our Front End firewall.
VLAN200 is connected to our DLink L3 Switch.
..........................
Other Inter VLAN/Routes Details:
CISCO LAN router at Site A- has 3 different SUB nets (static route)
D Link L3 switch at Site B- has 3 different VLANS.
The default gate way for the CISCO LAN router and D Link L3 switch is 192.168.20.1/24
..........................
Hope all these details would help you.
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dynamic routing protocol ensures automatic failover if loss of one circuit happens. as added option, you might want to consider unequal cost load balancing (EIGRP), what this basically means is that if you have two paths with unequal cost (bandwidth path), the routing protocol will load balance between the two links depending on each link capacity.
the problem is you are using an L2 switch only connecting both sites, so L3 solution will not work. so basically you'll have to relay on L2 redundancy using spanning-tree.
can you you give a description of your setup, how are subnet and VLAN in place? i'm assuming currently you are just trunking the connection between sites and VLAN traverse from one site to the other.
do you have a core gateway in one site or both which handles the intervlan routing?