[dualtor][active-active] Add traffic forwarding section #1132
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yxieca
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doc/dualtor/active_active_hld.md
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| #### 3.7.1 Special Cases of Traffic Forwarding | ||
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| ##### 3.7.1.1 gRPC Traffic to the NiC IP | ||
| There is a scenario that, if ToR A tries to toggle to standby when its peer ToR B is already in standby state, ToR A’s toggle to standby gRPC request will be forwarded to its peer ToR(ToR B) via the tunnel(this is because orchagent re-programs the route before sending standby gRPC request). While ToR B is still in standby, this request will be blackholed. |
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This a conditional scenario: if all IO goes to tunnel routes when mux enters standby state. Please make it clear.
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Signed-off-by: Longxiang Lyu <lolv@microsoft.com>
Signed-off-by: Longxiang Lyu <lolv@microsoft.com>
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yxieca
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What I did Let mux orch skip adding kernel tunnel routes for SoC IPs. Signed-off-by: Longxiang Lyu lolv@microsoft.com Why I did it Please refer to sonic-net/SONiC#1132 for more details. How I verified it Add unittest. Signed-off-by: Longxiang Lyu <lolv@microsoft.com>
yxieca
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What I did Let mux orch skip adding kernel tunnel routes for SoC IPs. Signed-off-by: Longxiang Lyu lolv@microsoft.com Why I did it Please refer to sonic-net/SONiC#1132 for more details. How I verified it Add unittest. Signed-off-by: Longxiang Lyu <lolv@microsoft.com>
lolyu
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What I did Let mux orch skip adding kernel tunnel routes for SoC IPs. Signed-off-by: Longxiang Lyu lolv@microsoft.com Why I did it Please refer to sonic-net/SONiC#1132 for more details. How I verified it Add unittest. Signed-off-by: Longxiang Lyu <lolv@microsoft.com>
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This is to add the traffic forwarding section to the active-active dualtor HLD.
Signed-off-by: Longxiang Lyu lolv@microsoft.com