12-17-2002 06:31 AM - edited 03-02-2019 03:39 AM
Please draw as you read. It may seem complex but is a very simple problem.
EQUIPMENT:
------------------
PIX with 2 interfaces,
12-port Switch (Sa),
12-port Switch (Sb),
RouterA (Ra) with 2 Ethernet and 1 serial interfaces,
RouterB (Rb) with 2 Ethernet and 2 serial interfaces.
CONNECTIVITY:
----------------------
Sa and Sb connect to each other
Sa connects to E0/0 of Ra
Sb connects to E0/0 of Rb
Pix's outside connects to Sa
Ra and Rb are connected using cross-over via their E0/1
Ra's serial port is conencted to Site A
Rb's serial port 1 is connected to Site A and serial port 2 is connected to site B
Both switches and Routers are outside the firewall.
IP and ROUTING:
-----------------------
Ra and Rb run EIGRP with remote routers that belong to someone else. All routers are in the same AS 1.
Site A is one network say, 10.1.1.x, Site B is another network say 20.1.1.x. Both connect to each other as well, for redundancy, forming a typical ring with my outside routers.
QUESTIONS:
-----------------
Q1. Should I define two HSRP groups so that my PIX gets two outside gateways and sends data destined for Site A to Ra and data for site B to Rb.
Q2. If I only define one HSRP group, wont EIGRP anyways direct all traffic destined to SiteB to Rb?
Q3. Is there any advantage I will get if I decide to run MHSRP or I am just making my network unnecessarily complex?
Thanks.
Solved! Go to Solution.
12-18-2002 07:14 AM
ANSWERS:
Q1. Should I define two HSRP groups so that my PIX gets two outside gateways and sends data destined for Site A to Ra and data for site B to Rb.
Yes. No reason not to and no reason to incur extra hops which are not needed.
Q2. If I only define one HSRP group, wont EIGRP anyways direct all traffic destined to SiteB to Rb?
Yes. Assuming you have configured EIGRP correctly.
Q3. Is there any advantage I will get if I decide to run MHSRP or I am just making my network unnecessarily complex?
Yes (to 1st 1/2 of Q). Reduced router loading (no handling of packets unnecessarily) and higher performance (eliminate delay introduced by the extra Ethernet hop).
Yes (2 2nd 1/2 of Q). Assuming links are T1, you won't be able to measure the difference.
You're welcome :-)
Vincent C Jones
12-18-2002 07:14 AM
ANSWERS:
Q1. Should I define two HSRP groups so that my PIX gets two outside gateways and sends data destined for Site A to Ra and data for site B to Rb.
Yes. No reason not to and no reason to incur extra hops which are not needed.
Q2. If I only define one HSRP group, wont EIGRP anyways direct all traffic destined to SiteB to Rb?
Yes. Assuming you have configured EIGRP correctly.
Q3. Is there any advantage I will get if I decide to run MHSRP or I am just making my network unnecessarily complex?
Yes (to 1st 1/2 of Q). Reduced router loading (no handling of packets unnecessarily) and higher performance (eliminate delay introduced by the extra Ethernet hop).
Yes (2 2nd 1/2 of Q). Assuming links are T1, you won't be able to measure the difference.
You're welcome :-)
Vincent C Jones
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