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dual PIX 515e / Catalyst 3750 / Dell server - high availability

Posted on 2006-10-31
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Last Modified: 2013-11-16
Hi everyone,
I need to setup a small network with high availability in mind.

We have following network equipment:
- two Cisco PIX 515e firewalls
- two Cisco Catalyst 3750 switches
- two Dell servers with two NICs each (Intel/Netgear but can work in a team using Intel ANS)

What is the best way to configure this network?

Is it possible to configure it so that system can still work if eg. following components fail: NIC1, switch1 and pix2?

Thanks
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Question by:milan_novkovic
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pseudocyber earned 2000 total points
ID: 17841190
Pix                      Pix
 |                        |
---VRRP or GLBP---
 |                        |
 |                        |
3750=======3750
 | \                  /  |
 |  \                /   |
 |    \             /    |
 |      \         /      |
 |        \     /        |
 |          \  /         |
 |          / \          |
 |         /    \        |
 |       /        \      |
 |     /            \    |
 |   /                \  |
 | /                    \|
Dell                    Dell
Teamed             Teamed

If you're using multiple vlans, then trunk your vlan across on both switches.  Make two connections between switches and aggregate them (Fast Etherchannel) for redundant load balancing connections.

VRRP or GLBP will provide firewall redundancy in case one fails.  GLBP is active/active.

Team the NICs on your Dells.  Then, connect one cable from each switch to the Dells.  Aggregate the two connections if you can on the switch side and if so, then use Switch Assisted Load Balancing (SLB) (naming changes).  If you can't aggregate the two connections (bond, or Etherchannel) then use Fault Tolerant Load Balancing (FTLB) on the Server Teaming end.

HTH
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Author Comment

by:milan_novkovic
ID: 17843341
I forgot to mention that PIXes have active/standby licences, so standby would work only when active fails.

We received Stackwise cable with 3750 switches. Is there a need to use switch stacks for our needs or should switches be connected using only ethernet cables?
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Expert Comment

by:pseudocyber
ID: 17843359
I would use the stacking cables.  Faster, and don't burn Ethernet ports.
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Author Comment

by:milan_novkovic
ID: 17849961
Is there a way of configuring this network so that system would work if eg. PIX1 and Switch2 fail (PIX1 is connected to Switch1) ?
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Expert Comment

by:pseudocyber
ID: 17850112
Not without connecting both pixes to both 3750's.
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Author Comment

by:milan_novkovic
ID: 17857814
How can I connect both pixes to both catalysts? I think it's not possible to use the same subnet for two different interfaces on PIX 515e.
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