Manuals / Allied Telesis / Computer Equipment / Switch

Allied Telesis Rapier i Series Displaying log entries, The show log command is also very useful

Models: AT-8700XL Series AT-8600 Series Rapier i Series

1 26

Download 26 pages 29.76 Kb

Page 24

Image 24

Troubleshooting

Displaying log entries

The show log command is also very useful:

Manager > sh log

Date/Time S Mod Type SType Message

------------------------------------------------------------------------

02	21:42:55 3	DHCP DHCPS ADD		Adding new entry [chaddr
				00-11-22-33-44-15],
				clientIP 2.2.2.2, vlan1, port3, serverIP
				0.0.0.0, Expires N/A (static entry)
02	21:43:20 4	DHCP DHCPS	FAIL	Error adding entry [chaddr
				00-11-22-33-44-16].
				Adding another entry will exceed the
				configured MAXLEASES of 1 for port 3
02	21:43:20 4	CH MSG	ERROR	Static DHCP Snooping entry could not be
				added.
				Check log for details
02	21:43:56 3	DHCP DHCPS ADD		Adding new entry [chaddr
				00-11-22-33-44-16],

clientIP 2.2.2.2, vlan1, port7, serverIP 0.0.0.0, Expires N/A (static entry)

Page 24 AlliedWare™ OS How To Note: DHCP Snooping on Rapier-style switches

Page 24

Image 24

Allied Telesis Rapier i Series manual Displaying log entries, The show log command is also very useful, Troubleshooting

Contents

Introduction AlliedWareTM OSWhich products and software version does this information apply to? z AT-8800 series z AT-8600 series z AT-8700XL seriesz Rapier and Rapier i series Related How To Notes Minimum configurationDHCP snooping Database survival across reboots The databaseDHCP snooping database time-out Verifying the status of snooped usersList of terms Trusted and non-trusted ports Enabling DHCP snoopingStatic binding Completely removing the DHCP snooping database So the database is emptyDHCP snooping DHCP Option DHCP OptionProtocol details Example PacketConfiguring Option AnalysisConfiguring filtering DHCP filteringX To enable DHCP snooping ARP security DHCP snooping filter show commandARP security Resource considerationsX If ARP security is enabled, add X or if ARP security is enabled, isExample on a Rapier Configuration examples X Configure a private VLAN for customersX Enable DHCP snooping and Option 82 support X Add the tagged uplink ports to the VLANX Add the untagged ports for the customers X Define the DHCP snooping trusted portsX Create a set of QoS classifiers X Define the upstream QoS flow groupsX Create a traffic class for all upstream flow groups X Configure two VLANs for layer 3 access to the DHCP server X Add ports to the VLANscreate vlan=Customers vid=48 create vlan=Network vid=50 add vlan=48 port=1-24 add vlan=50 port=25X For layer 3 support, enable the BOOTP Relay X Define the DHCP snooping trusted portX Enable DHCP snooping and Option 82 support X Configure the switch’s IPX Create a set of QoS classifiers X Define the upstream QoS flow groupsX Create a traffic class for all upstream flow groups Troubleshooting No trusted ports configuredThe DHCP client continually sends requests instead of a discover Maximum number of leases is exceededDHCPSNProcess 0b47ee6c Error adding entry to DB DHCPSNDB Updating entryId 7. FlagsSwitch is dropping ARPs Troubleshooting DHCPSNARP 02680e6c ARP to be forwarded, sender validatedtrusted ports UntaggedNoneDisplaying log entries The show log command is also very usefulTroubleshooting Appendix 1 ISC DHCP server Appendix 1 ISC DHCP serverif exists agent.circuit-id