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New Member

bundled or loadbalanced Frame Relays

Is it possible to setup two Frame Relay circuits connecting to different CSU/DSU interfaces on a 2621 Router to be load balanced or bundled? We are wanting to use the same IP block but just have twice the bandwidth.

Thanks.

3 REPLIES
Anonymous
N/A

Re: bundled or loadbalanced Frame Relays

It is possible to load balance in frame relay.

In the following example : two PVCs between Router_A and Router_B. A routing protocol should like OSPF is needed. Depending on the bandwidth either fast switching or Process swiching can be done. If you do process swiching router processor will be overloaded provided the bandwidth is large.

New Member

Re: bundled or loadbalanced Frame Relays

Thanks for the info. Next question is what if the two Frame Relay Circuits come from two different routers? They would both be from UUNet but they might be coming off of different routers or even cards. Also do you know of a white paper for setting up the load balancing.

Thanks for you help.

Anonymous
N/A

Re: bundled or loadbalanced Frame Relays

To check the load balancing view show interface serial 0 and 1

Router_A --------- Router_B

---------

FR

Interface Serial0

encapsulation frame-relay

bandwidth 128

frame-relay lmi-type ansi

!

Interface Serial0.101 point-to-point

ip address 10.0.1.1 255.255.255.0

bandwidth 128

frame-relay interface-dlci 101

!

Interface Serial1

encapsulation frame-relay

bandwidth 128

frame-relay lmi-type ansi

!

Interface Serial1.201 point-to-point

ip address 10.4.2.1 255.255.255.0

bandwidth 128

frame-relay interface-dlci 201

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Followup response

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The following URL has information on Load balancing

How Does Load-Balancing Work?

http://www.cisco.com/en/US/tech/tk648/tk365/technologies_tech_note09186a0080094820.shtml

http://www.cisco.com/en/US/tech/tk648/tk365/technologies_q_and_a_item09186a008012d8f7.shtml#Q17

How Does Unequal Cost Path Load Balancing (Variance) Work in IGRP and EIGRP?

http://www.cisco.com/en/US/tech/tk648/tk365/technologies_tech_note09186a008009437d.shtml

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