Accton Technology ES3526XA, ES3552XA manual Switch Clustering, Cluster Configuration

3 Configuring the Switch

CLI - This example displays all the resource records learned from the designated name servers.

Console#show dns cache					4-239
NO	FLAG	TYPE	IP	TTL	DOMAIN
0	4	CNAME	207.46.134.222	51	www.microsoft.akadns.net
1	4	CNAME	207.46.134.190	51	www.microsoft.akadns.net
2	4	CNAME	207.46.134.155	51	www.microsoft.akadns.net
3	4	CNAME	207.46.249.222	51	www.microsoft.akadns.net
4	4	CNAME	207.46.249.27	51	www.microsoft.akadns.net
5	4	ALIAS	POINTER TO:4	51	www.microsoft.com
6	4	CNAME	207.46.68.27	71964	msn.com.tw
7	4	ALIAS	POINTER TO:6	71964	www.msn.com.tw
8	4	CNAME	65.54.131.192	605	passportimages.com
9	4	ALIAS	POINTER TO:8	605	www.passportimages.com
10	4	CNAME	165.193.72.190	87	global.msads.net
Console#

Switch Clustering

Switch Clustering is a method of grouping switches together to enable centralized management through a single unit. Switches that support clustering can be grouped together regardless of physical location or switch type, as long as they are connected to the same local network.

A switch cluster has a “Commander” unit that is used to manage all other “Member” switches in the cluster. The management station uses Telnet to communicate directly with the Commander throught its IP address, and the Commander manages Member switches using cluster “internal” IP addresses. There can be up to 36 Member switches in one cluster. Cluster switches are limited to within a single IP subnet.

Once a switch has been configured to be a cluster Commander, it automatically discovers other cluster-enabled switches in the network. These “Candidate” switches only become cluster Members when manually selected by the administrator through the management station.

Note: Cluster Member switches can be managed through only using a Telnet connection to the Commander. From the Commander CLI prompt, use the “rcommand” command (see page 4-252)to connect to the Member switch.

Cluster Configuration

To create a switch cluster, first be sure that clustering is enabled on the switch (the default is enabled), then set the switch as a Cluster Commander. Set a Cluster IP Pool that does not conflict with the network IP subnet. Cluster IP addresses are assigned to switches when they become Members and are used for communication between Member switches and the Commander.

Command Attributes

•Cluster Status – Enables or disables clustering on the switch.

•Cluster Commander – Enables or disables the switch as a cluster Commander.

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