Update large-networks01.md

Author: cloudnativer

docs/large-networks01.md

@@ -25,7 +25,7 @@ In order for your architecture to support a larger network, you need to do the f
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 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2) You'd better turn on the BGP ECMP function of the kubernetes node on-line router device. The effect of this method is that when the user's access traffic enters the router device, it is first balanced to the kubernetes node of the back end through ECMP load balancing, and then to the final pod through IPVS load balancing. When devices, links and nodes in the network are down, traffic can be automatically switched to other healthy devices, links and nodes. In this way, the availability, high performance and scalability of the network are realized.See this link for details (<a href="../docs/large-networks04.md">large-networks04 documentation</a>).
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-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3) You need to set both "--advertise-cluster-IP=true" and "--advertise-cluster-subnet=subnet" parameters.Let k8s node only notify k8s service aggregate routes to the upstream routers, reducing the service routing entries of the upstream routers.See this link for details (<a href="../docs/large-networks03.md">large-networks03 documentation</a>).
+&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3) You need to set both "--advertise-cluster-IP=true" and "--advertise-cluster-subnet=you_subnet_cidr" parameters.Let k8s node only notify k8s service aggregate routes to the upstream routers, reducing the service routing entries of the upstream routers.See this link for details (<a href="../docs/large-networks03.md">large-networks03 documentation</a>).
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 <font size="4">**YAML source files used in this document**</font><br>