remove public peering

Author: duongau

articles/expressroute/expressroute-troubleshooting-arp-classic.md

@@ -50,8 +50,8 @@ The following section provides information about how to view the ARP tables that
 ## Prerequisites for using ARP tables
 Ensure that you have the following before you continue:
 
-* A valid ExpressRoute circuit that's configured with at least one peering. The circuit must be fully configured by the connectivity provider. You (or your connectivity provider) must configure at least one of the peerings (Azure private, Azure public, or Microsoft) on this circuit.
-* IP address ranges that are used for configuring the peerings (Azure private, Azure public, and Microsoft). Review the IP address assignment examples in the [ExpressRoute routing requirements page](expressroute-routing.md) to get an understanding of how IP addresses are mapped to interfaces on your side and on the ExpressRoute side. You can get information about the peering configuration by reviewing the [ExpressRoute peering configuration page](expressroute-howto-routing-classic.md).
+* A valid ExpressRoute circuit that's configured with at least one peering. The circuit must be fully configured by the connectivity provider. You (or your connectivity provider) must configure at least one of the peerings (Azure private or Microsoft) on this circuit.
+* IP address ranges that are used for configuring the peerings (Azure private and Microsoft). Review the IP address assignment examples in the [ExpressRoute routing requirements page](expressroute-routing.md) to get an understanding of how IP addresses are mapped to interfaces on your side and on the ExpressRoute side. You can get information about the peering configuration by reviewing the [ExpressRoute peering configuration page](expressroute-howto-routing-classic.md).
 * Information from your networking team or connectivity provider about the MAC addresses of the interfaces that are used with these IP addresses.
 * The latest Windows PowerShell module for Azure (version 1.50 or later).