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Three types of load-balancing with dual-outlet Highlighted

Latest reply: Nov 15, 2018 03:24:07 1279 7 3 0 1

As we know,load-balancing with double-outlet can provide a alternate link when one of the link fault.

And,there are three common dual-outlet load-balancing.

1.dual-outlet with one is high-speed link and another is low-speed link,high-speed link act as main link,low-speed link act as cold backup.

2.dual-outlet with two different ISPs,and both of them are in used.Different users access internet use different ISP link.

3.dual-outlet with one ISP,but two links are using different bandwidth.Both links are in used to increase the total accessing bandwidth.


Within secnario one,there may be two ISPs,or only one ISP.

S_1

Whatever the number of ISP is,the configuration keeps same.

a) configure interface IP address or dialing configuration.

b) configure NAT on both interfaces.

c) configure default-route towards high-speed link,and float default-route towards low-speed link.

d) configure NQA or BFD track for speeding up link convergence.


mainly configuration


default-route:

ip route-static 0.0.0.0 0.0.0.0 x.x.x.x           //default-route towards high-speed link                                                                                          without BFD/NQA

ip route-static 0.0.0.0 0.0.0.0 y.y.y.y preference 80  //default-route towards load-                                                                                                          balancing link without BFD/NQA                                                                                                  track.



NQA track:

nqa


BFD track:

bfd


NOTES:BFD configuration as above requires the ISP to do the corresponding configuration.Three are two more secnarios of configuring BFD,plz visit http://support.huawei.com/enterprise/docinforeader!loadDocument1.action?contentId=DOC0100523105&partNo=10052 to learn more details.



Within secnario two,

S_1

a) configure interface IP address or dialing configuration.

b) configure NAT on both interfaces.

c) configure traffic-policy to distinguish different users for applying different destination-address.


mainly configuration:

traffic-policy


NOTES: traffic-policy supports associating with NQA,command as below:

redirect ip-nexthop ip-address [ vpn-instance vpn-instance-name ] [ track { nqa admin-name test-name | ip-route ip-address { mask | mask-length } } ] [ post-nat ] [ discard ]



with secnario three,

s_3

a) configure interface IP address or dialing configuration.

b) configure NAT on both interfaces.

c) configure two default-routes with same preference,so that traffic will load balanced on both interfaces.

d) adjust load-balancing algorithm,adjust load-balancing based on source IP to prevent when accessing to the same external network resource,the source address is translated into different public address due to different exit port.


mainly configuration:

ip load-balance hash src-ip   //set load-balancing based on source IP

int e0/0/0

load-balance bandwidth link_bandwidht  //link_bandwidth is the specific bandwith                                                                                 value of the link. 

load-balance unequal-cost enable

then restart this interface.

do the same configuration on another interface.


If you guys find any errors in this post,plz figure it out,and it's pleasure to see you sharing your thoughts~ Three types of load-balancing with dual-outlet-2794839-7

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faysalji
Author Created Nov 5, 2018 07:26:40

Thanks
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faysalji
Author Created Nov 5, 2018 07:27:06

well described
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chenhui
chenhui Created Nov 9, 2018 01:17:24 (0) (0)
hope this can help U  
Torrent
Created Nov 6, 2018 03:21:56

useful post, we can learn a lot. thanks for sharing

is this available for AR router and firewall?Three types of load-balancing with dual-outlet-2795613-1
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chenhui
Admin Created Nov 9, 2018 01:20:56

Posted by Torrent at 2018-11-06 03:21 useful post, we can learn a lot. thanks for sharingis this available for AR router and firewall?:lo ...
absolutely yes, the only thing we should notice is the difference configuration command between AR router and USG firewall, or we can do this in web interface on USG firewall.Three types of load-balancing with dual-outlet-2797501-1
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wissal
MVE Created Nov 12, 2018 04:44:50

Paramount importance documents.
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lizhi94
Created Nov 15, 2018 03:24:07

as you say (Three types of load-balancing with dual-outlet ),the same question the only thing we should notice is the difference configuration command between AR router and USG firewall, or we can do this in web interface on USG firewall?
the only thing we should notice is the difference configuration command between AR router and USG firewall, or we can do this in web interface on USG firewall?
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  • x
  • convention:

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