Troubleshooting Ip Source Guard; Enabling Trace Messages For Ip Source Guard Troubleshooting; Troubleshooting Tacacs - Avaya 8800 Troubleshooting Manual
Ethernet routing switch
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Also See for 8800:
- Planning and engineering, network design (327 pages) ,
- Planning and engineering (306 pages) ,
- Configuration manual (226 pages)
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Note that this command only traces for configuration changes and HA synchronization. It does
not provide ARP message tracing.
Troubleshooting IP Source Guard
To troubleshoot specific IP Source Guard issues, use the following procedure.
1. If IP Source Guard cannot be enabled on the port, verify that DHCP Snooping is
2. Verify that Dynamic ARP Inspection is enabled on the port, and on all VLANs.
3. If packets cannot pass through the port, note that only packets whose source IP
Enabling trace messages for IP Source Guard troubleshooting
You can enable IP Source Guard trace for troubleshooting purposes using the following
command:
trace level 116 <1-4> (CLI or ACLI)
This is the same trace level as for DHCP Snooping.
Troubleshooting TACACS+
See the following sections to troubleshoot the specified TACACS+ issue:
•
Customer unable to log on using Telnet or rlogin
•
Customer unable to log on using SSH
•
Customer unable to log on using PPP
Troubleshooting
enabled globally, on the port, and on all VLANs.
show ip dhcp-snooping info show ip dhcp-snooping port show ip
dhcp-snooping vlan (CLI)
show ip dhcp snooping show ip dhcp snooping interface show ip
dhcp snooping vlan (ACLI)
show ip arp-inspection port show ip arp-inspection vlan (CLI)
show ip arp inspection interface show ip arp inspection vlan
(ACLI)
match the entry stored in the DHCP Snooping table can pass through the port. All
packets except DHCP are dropped before the DHCP Snooping table has been set
up.
Troubleshooting IP Source Guard
on page 458
on page 458
on page 459
July 2013
457
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Troubleshooting
