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Please note:

1. After upgrading to 4.20e or later, the SNMP communities have been moved to another database.
   Users have to manually add back the communities via CLI commands below:
   - 'snmp add access read public'
   - 'snmp add access write password'
2. When added successfully, the new settings can be saved into flash via 'Save Config to FLASH', and then activated in each rebooting hereafter.
3. The maximum access communities is up to 5.
4. You can also add trap receiver by using CLI commands, 'snmp add trap'

SNMP version : SNMPv2c

(SNMPv2c is the combination of the enhanced protocol features of SNMPv2 without the SNMPv2 security. The "c" comes from the fact that SNMPv2c uses the SNMPv1 community string paradigm for "security", but is widely accepted as the SNMPv2 standard.) Trap supported: Cold Start, Authentification Failure. The following MIBs are supported:

This is a special service from ISP that ISP will assign a subnet (group IPs) negotiated in the IPCP, to subscriber through PPPoA or PPPoE connection. Then subscriber can use these public IPs to surf Internet directly.Pl ease follow the following steps to configure router to achieve this feature.

1. Access router and click "Configuration" => "WAN" => "ISP" => "Edit" => "Advanced Options" => "PPP"
2. Enable both functions "Give Subnet Mask to DHCP Server" and "Discover Subnet Mask"
3. Disable the NAT in PPPoA/PPPoE WEB page
4. Save the configuration to flash and restart to enable this setting.