Znyx Networks bh5700 manual Physical Link Status on Base Switch, Snmp Configuration

status is down, then the operational status will be down independent of the underlying link state. You must ifconfig up the zres to see the operational link status for a zre. When the administrative status is up, the operational status is dependent on the underlying physical state. For example, Table 8.3 shows that if zhp0 contains zre1 and zre2, the it would also be true for the operational status (given the administrative status is up on zre1, zre2, and zhp0).

Link and SNMP Status

Physical Link Status		SNMP Operational Status
zre1	zre2	zre1	zre2	zhp0
down	down	down	down	down
down	up	down	up	up
up	down	up	down	up
up	up	up	up	up

Table 8.3: Physical Link Status on Base Switch

The administrative status is directly controlled by ifconfig up/down. The administrative status of the zhps and zres do not affect each other.

ifStackTable Entries

In the actual ifStackTable as shown in the MIB walk the following two OIDs (which denote ifIndexes) show the relationships.

ifMIB.ifMIBObjects.ifStackTable.ifStackEntry.ifStackStatus.0.1 = active(1)

ifMIB.ifMIBObjects.ifStackTable.ifStackEntry.ifStackStatus.0.2 = active(1)

If they are X.Y then

•if X = 0 there is nothing "above" this interface

•if Y = 0 there is nothing "below" this interface

otherwise interface X has interface Y as a logical constituent.

SNMP Configuration

The SNMP agent is called snmpd and is started by default from the Linux boot up script /etc/rcZ.d/S75snmpd. If you do not wish to start snmpd, remove /etc/rcZ.d/S75snmpd.

Configuration of the OpenArchitect switch SNMP agent is the same as configuration of any standard Linux host that uses the NET-SNMP agent. Configuration information for persistent data and security information is kept in snmpd.conf under the default SNMP configuration location, which for the OpenArchitect switch is /usr/share/snmp. snmpd.conf is the location to change “sys” information such as the syslocation and syscontact, as well as permissions such as the rocommunity or rwcommunity.

Ethernet Switch Blade User's Guide release 3.2.2j page 135