Dynamic Host Configuration Protocol Relay (Dhcp) Relay - Avaya 4000 Series Troubleshooting Instructions

In order to enable or disable SNMP traps, you must enter Global Configuration mode for the
switch. The ACLI commands for SNMP traps for DHCP Snooping, Dynamic ARP Inspection,
and IP Source Guard are:
• snmp-server notification-control <WORD> - enables the designated trap
• no snmp-server notification-control <WORD> - disables the designated trap
• default snmp-server notification-control <WORD> - sets designated trap
to its defaults
• show snmp-server notification-control <WORD> - produces a list of traps
and shows whether they are enabled or disabled
<WORD> is one of the following SNMP trap descriptions:
• bsDhcpSnoopingBindingTableFull
• bsDhcpSnoopingTrap
• bsaiArpPacketDroppedOnUntrustedPort
• bsSourceGuardReachedMaxIpEntries
• bsSourceGuardCannotEnablePort
If you enable SNMP traps for DHCP Snooping, Dynamic ARP Inspection, or IP Source Guard,
but the switch fails to generate the traps, ensure you have configured the following settings for
the respective feature:
• You must globally enable DHCP.
• You must enable ARP Inspection for the management VLAN.
• You must enable IP Source Guard on all ports for which you require the switch to generate
SNMP traps.

Dynamic Host Configuration Protocol Relay (DHCP) relay

The Avaya Ethernet Routing Switch 4000 Series supports static routes. In order for DHCP
servers to talk to clients on different VLANs or subnets, the feature relays client requests to
DHCP servers on different Layer 3 VLANs and a relay server replies back to the clients.
The maximum number of client/server pairs that the switch supports is 256, which is the
maximum number of VLANs.
For more information about ACLI and Web-based management of DHCP relay, see
Configuring IP Routing and Multicast on Avaya Ethernet Routing Switch 4000 Series,
NN47205-506.
Troubleshooting Avaya ERS 4000 Series
Dynamic Host Configuration Protocol Relay (DHCP) relay
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