XGS4600 Series User’s Guide
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59.7.2 SSH Overview
Unlike Telnet or FTP, which transmit data in clear text, SSH (Secure Shell) is a secure communication
protocol that combines authentication and data encryption to provide secure encrypted
communication between two hosts over an unsecured network.
Figure 450 SSH Communication Example
59.7.2.1 How SSH Works
The following table summarizes how a secure connection is established between two remote hosts.
Table 270 SNMP Switch Traps
OPTION OBJECT LABEL OBJECT ID DESCRIPTION
stp STPNewRoot 1.3.6.1.2.1.17.0.1 This trap is sent when the STP root switch
changes.
zyMrstpNewRoot 1.3.6.1.4.1.890.1.15
.3.52.3.1
This trap is sent when the MRSTP root switch
changes.
zyMstpNewRoot 1.3.6.1.4.1.890.1.15
.3.53.3.1
This trap is sent when the MSTP root switch
changes.
STPTopologyChange 1.3.6.1.2.1.17.0.2 This trap is sent when the STP topology
changes.
zyMrstpTopologyChange 1.3.6.1.4.1.890.1.15
.3.52.3.2
This trap is sent when the MRSTP topology
changes.
zyMstpTopologyChange 1.3.6.1.4.1.890.1.15
.3.53.3.2
This trap is sent when the MSTP root switch
changes.
mactable zyMacForwardingTableFull 1.3.6.1.4.1.890.1.15
.3.48.2.1
This trap is sent when more than 99% of the
MAC table is used.
zyMacForwardingTableFullRec
overed
1.3.6.1.4.1.890.1.15
.3.48.2.2
This trap is sent when the MAC address
switching table has become normal from
full.
rmon RmonRisingAlarm 1.3.6.1.2.1.16.0.1 This trap is sent when a variable goes over
the RMON "rising" threshold.
RmonFallingAlarm 1.3.6.1.2.1.16.0.2 This trap is sent when the variable falls below
the RMON "falling" threshold.
classifier zyAclV2ClassifierLogNotificatio
n
1.3.6.1.4.1.890.1.15
.3.105.4.1
This trap is sent when the Switch detects
classifier log information.
rip zyRipExceedMaxDynamicRout
e
1.3.6.1.4.1.890.1.15
.3.74.2.1
This trap is sent when the maximum allowed
number of dynamic routes learned through
RIP has been exceeded.
ospf zyOspfExceedMaxDynamicRo
utePath
1.3.6.1.4.1.890.1.15
.3.57.3.1
This trap is sent when the maximum allowed
number of dynamic routes learned through
OSPF has been exceeded.
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