Siemens A53457 Installation & Maintenance

DESCRIPTION1-3Document No.: COM-00-05-16 June 2006, Revised June 2014Version: C.1When a route to an ATCS device is in the routing table, indicating that it goes through a particularIP address on the Ethernet Local Area Network (LAN), but later appears on a different InternetProtocol (IP) address, the new IP address will be adopted. This can occur when a WAG within thenetwork is swapped out with another WAG that has a different IP address configured. The clientATCS devices for the new WAG will now go through that WAG to reach the LAN. All WAGs willnote the new IP address and will update the routing table accordingly.The same is true for an Echelon Subnet/Node address. When an ATCS address is matched with aparticular Echelon Subnet/Node address but later the WAG detects that the same ATCS addressappears on a different Subnet/Node address, the new address will be adopted for that route.The detection of two devices that have the same ATCS address can be a configuration conflictthat exists in the ATCS network. Because of this conflict, the WAG will log an event after adoptingthe new address.For Echelon devices, the logged event is:• WARNING: 7.RRR.LLL.GGG.SS.DD Echelon Address conflict WW.XX to YY.ZZThe ATCS address of the conflicting or altered routing is displayed with the old EchelonSubnet/Node address (WW.XX) and the new Subnet/Node address (YY.ZZ).For IP changes/conflicts, the logged event is:• WARNING: 7.RRR.LLL.GGG.SS.DD IP XX.XX.XX.XX to YY.YY.YY.YYThe ATCS address of the conflicting or altered routing is displayed with the old IP address(XX.XX.XX.XX) and the new IP address (YY.YY.YY.YY).NOTEWhile the above logged events may indicate that there is a configuration conflicton the network, the re-addressed routing may be due to a user swapping out adevice on the network.WAGs collect statistical information about the source and destination devices and the interfacesthat the message came in on and went out to.WAGs also communicate with each other, periodically sending messages to each other conveyinginternal routing information. These messages are sent along the specified Broadcast Medium.