Ssh Overview; How Ssh Works - ZyXEL Communications GS2210 Series User Manual

Table 153 SNMP Switch Traps
OPTION OBJECT LABEL
stp STPNewRoot
zyMrstpNewRoot
zyMstpNewRoot
STPTopologyChange
zyMrstpTopologyChange
zyMstpTopologyChange
mactable zyMacForwardingTableFull
zyMacForwardingTableFullReco
vered
rmon RmonRisingAlarm
RmonFallingAlarm
cfm dot1agCfmFaultAlarm

37.7.2 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 220 SSH Communication Example

37.7.2.1 How SSH works

The following table summarizes how a secure connection is established between two remote hosts.
GS2210 Series User's Guide
OBJECT ID DESCRIPTION
1.3.6.1.2.1.17.0.1 This trap is sent when the STP root switch changes.
1.3.6.1.4.1.890.1.15 This trap is sent when the MRSTP root switch
.3.52.3.1 changes.
1.3.6.1.4.1.890.1.15 This trap is sent when the MSTP root switch changes.
.3.53.3.1
1.3.6.1.2.1.17.0.2 This trap is sent when the STP topology changes.
1.3.6.1.4.1.890.1.15 This trap is sent when the MRSTP topology changes.
.3.52.3.2
1.3.6.1.4.1.890.1.15 This trap is sent when the MSTP root switch changes.
.3.53.3.2
1.3.6.1.4.1.890.1.15 This trap is sent when more than 99% of the MAC
.3.48.2.1 table is used.
1.3.6.1.4.1.890.1.15 This trap is sent when the MAC address switching
.3.48.2.2 table has become normal from full.
1.3.6.1.2.1.16.0.1 This trap is sent when a variable goes over the RMON
"rising" threshold.
1.3.6.1.2.1.16.0.2 This trap is sent when the variable falls below the
RMON "falling" threshold.
1.3.111.2.802.1.1.8. The trap is sent when the Switch detects a
0.1 connectivity fault.
Chapter 37 Access Control
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