Any way to load balance two connection to upstream

chenhui · Created Jun 11, 2019 02:02:15

@Nimbus hi!

Did the 2nd link connect to the provider via BGP? If yes, there are a lot of ways to do the load balace.

But actually it's recommended to do the load balance manually, because there are many features that could help us control the traffic path.

Based on these BGP features, we could divide the traffic to the more reasonable path.

However, you could also use the equal-cost routes to balance the traffic. This way it's easier to do the configuration.

For more details, please refer to this link: https://support.huawei.com/hedex ... lancing&lang=en.

wissal · Created Jun 10, 2019 10:59:23

Hello,
Please refer to the table below.

Thanks

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chenhui · Created Jun 11, 2019 02:02:15

@Nimbus hi!

Did the 2nd link connect to the provider via BGP? If yes, there are a lot of ways to do the load balace.

But actually it's recommended to do the load balance manually, because there are many features that could help us control the traffic path.

Based on these BGP features, we could divide the traffic to the more reasonable path.

However, you could also use the equal-cost routes to balance the traffic. This way it's easier to do the configuration.

For more details, please refer to this link: https://support.huawei.com/hedex ... lancing&lang=en.

Nimbus · Created Jun 11, 2019 13:38:03

How to direct all traffic from a certain subnet to a preferred path?

chenhui · Created Jun 12, 2019 00:42:23

Posted by Nimbus at 2019-06-11 13:38 How to direct all traffic from a certain subnet to a preferred path?

a simple way to do that is PBR(policy based route).
PBR allows you to control the traffic which matchs the specific conditions.
for detail configuring, please refer: https://support.huawei.com/hedex/hdx.do?docid=EDOC1000170180&id=dc_ne_qos_cfg_7004&text=PBR%252520Based%252520on%252520Redirection%252520to%252520an%252520MPLS-TE%252520P2P%252520Tunnel&lang=en

Nimbus · Created Jun 12, 2019 05:49:13

I have tried doing some alteration of AS-Path, but this only influence the incoming traffic to my AS.

Is there any way i can influence the outgoing traffic for a certain subnet to choose a certain link to use when going out of my AS.

Thank you.

chenhui · Created Jun 12, 2019 06:25:54

Posted by Nimbus at 2019-06-12 05:49 I have tried doing some alteration of AS-Path, but this only influence the incoming traffic to my AS ...

hi, as I mentioned before, if want to forward the traffic based on the source ip address, the PBR would be the best way.
for example, if you direct the traffic comes from network 10.1.1.0/24 to the ISP1, while the traffic comes from network 20.1.1.0/24 to ISP2, you could follow the steps bellow.

1. configure acl to match the traffic
acl 2001
rule 5 per ip sour 10.1.1.0 0.0.0.255
acl 2002
rule 5 per ip sour 20.1.1.0 0.0.0.255

2. configure traffic classifier
traff class to_isp1
if-match acl 2001
traff class to_isp2
if-match acl 2002

3. configure traffic behavior
traff beha to_isp1
redirect next-hop isp1_ip_address
traff beha to_isp2
redirect next-hop isp2_ip_address

4. configure traffic policy
traffic policy redirect_traffic
class to_isp1 beha to_isp1
class to_isp2 beha to_isp2

5. apply the traffci policy under the interface,
int g0/0/1
traffic-policy redirect_traffic inbound

uzzi · Created Jun 16, 2019 05:14:50

Specifically for BGP outbound traffic you can influence by changing local preference of both upstream, by default both are same but the higher will be preferred. You can use route-policy for this where you can match the link IP and set preference and put that route policy to upstream BGP peering. Below is the example.

https://support.huawei.com/enterprise/it/doc/EDOC0100585934/d9426e6c/example-for-configuring-the-local-preference-and-community-attribute-in-a-bgp-route-policy

Thank you.

Kindest regards,
Uzair

Any way to load balance two connection to upstream

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