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TOPIC: connecting 6 ISP in Cisco 3745 router

connecting 6 ISP in Cisco 3745 router 10 years 3 months ago #16535

  • bvnmani
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Hi,
I am having 6 ISP connection, In that 5 ISP's are terminating in Fastethernet and 1 ISP in Serial. These 6 ISP are connected in seperate routers. I m having juniper netscreen firewall, cisco 3745 router and layer 3 switch.I plan to connect my 6 ISP in 3745 router after that I plan to put my netscreen firewall.But I dont have the enough fastethernet slot in cisco 3745 router.Istead for going 4 port ethernet slot. Can I use my layer 3 switch?

Suppose I put 6 ISP in single 3745 router How much DRAM and Flash memory require.Currently its having 256 MB DRAM.

Suggest me is it cisco 3745 router can handle six ISP in single router...

Please help me to restructure my network..
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Re: connecting 6 ISP in Cisco 3745 router 10 years 3 months ago #16607

  • Dove
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Re: connecting 6 ISP in Cisco 3745 router 10 years 3 months ago #16623

  • bvnmani
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Thanks for your reply dove..

Now I am very clear that Cisco 3550 switch does not support NAT.

Please clear out my another doubt..

Suppose I put 6 ISP(bandwidth comes 6 Mbps) in single 3745 router How much DRAM and Flash memory require.Currently its having 256 MB DRAM.

Suggest me is it cisco 3745 router can handle six ISP in single router...
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Re: connecting 6 ISP in Cisco 3745 router 10 years 3 months ago #16624

  • Dove
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Hi,
I got this while google...pls go thr this it may help you

A 3745 supports 4 NM-4T which supports speeds upto 8 Mbps per NM so that you can terminate 4 6Mbps ISP links with no problem.

www.cisco.com/en/US/products/hw/routers/...9186a0080091b8b.html

But, Cisco says that yu can terminate 2 WIC-1T/WiC-2T in an NM-2W and get a speed of 8Mbps per WIC.So 3 NM-2W with 6 WIC serials should do the job for you.But wait, there is a catch, In the following link, at the beginning it says that the speed 8Mbps is per WIC, and at below it says per Network Module.I am sorry that I have not tested something like this before.......

www.cisco.com/en/US/products/hw/routers/...9186a00801aa71c.html


Dove
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Re: connecting 6 ISP in Cisco 3745 router 10 years 2 months ago #16809

  • Elohim
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You have more than enough memory as long as you are not running BGP on your 3750 which I doubt you can support a full BGP routing table.
Thanks for your reply dove..

Now I am very clear that Cisco 3550 switch does not support NAT.

Please clear out my another doubt..

Suppose I put 6 ISP(bandwidth comes 6 Mbps) in single 3745 router How much DRAM and Flash memory require.Currently its having 256 MB DRAM.

Suggest me is it cisco 3745 router can handle six ISP in single router...
The administrator has disabled public write access.
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