Ipv6 Dhcp Relay Switch Side Troubleshooting - Avaya 8800 Troubleshooting Manual

The following sections provide troubleshooting information for IPv6 DHCP Relay

IPv6 DHCP Relay switch side troubleshooting

With DHCP Relay, the Avaya Ethernet Routing Switch 8800/8600 only participates in
forwarding the requests and replies to and from the client and the DHCP server. The Ethernet
Routing Switch 8800/8600 always acts as the relay agent, on which you configure the forward
path to the server.
To troubleshoot DHCP Relay issues on the switch, use the following procedure.
1. Verify that the DHCP server is reachable using ping. (if ping is working and the
2. Verify that the relay agents and the forward path configured are reachable. (Ping
3. Check that the relay agent configurations are correct. Also verify that DHCP is
4. Verify that IPv6 forwarding is enabled globally.
5. Verify that the IPv6 based VLAN where the DHCP relay agent is configured is
6. In a scenario with VRRP and SMLT, Avaya recommends to have the VRRP IP
7. When using the VRRP VRID as the relay agent, make sure the VRRP configurations
8. To verify that relay forward and relay receive are working, enable trace for DHCP
Troubleshooting
DHCP server is reachable, DHCP should work).
the server and the gateway to the server.)
enabled on the switch.
show ipv6 dhcp-relay fwd-path show ipv6 dhcp-relay interface
(CLI or ACLI)
config vlan <vid> ipv6 dhcp-relay info (CLI)
show ipv6 info (CLI)
show ipv6 global (ACLI)
enabled.
show vlan info ipv6 (CLI)
show ipv6 interface vlan <vid> (ACLI)
configured as the DHCP relay agent.
are proper.
with IPv6, and grep trace for relay:
trace le 66 3 trace grep relay trace screen on (CLI or ACLI)
Troubleshooting IPv6 DHCP Relay
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