Dhcpv6 debug commands – Brocade FastIron SX, FCX, and ICX Diagnostic Reference User Manual

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Brocade FastIron SX, FCX, and ICX Diagnostic Reference

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DHCPv6 debug commands

This section describes the debug commands used for troubleshooting issues related to Dynamic
Host Configuration Protocol for IPv6 (DHCPv6) relay agent and snooping activity.

debug ipv6 dhcp relay

Syntax: [no] debug ipv6 dhcp relay

This command displays debug information related to DCHPv6 relay agent. The following ouput will
be displayed when you enable the DHCPv6 relay agent on the Ethernet interface 8/2.

Brocade# debug ipv6 dhcp relay

DHCP6: dhcp6_relay enabled on port ethernet 8/2

debug ipv6 dhcp snooping

Syntax: [no] debug ipv6 dhcp snooping

This command enables debugging of the DHCPv6 snooping activity.

Brocade# debug ipv6 dhcp snooping

Brocade(config-vif-11)# DHCPv6: snooping mapped to outgoing port 2/1/24 vlan 14

VRF 1

DHCPv6: snooping on trusted port 3/1/23, VRF 1, 2001:DB8::b->0000.007d.7a3e

debug ipv6 dhcp pd all

Syntax: [no] debug ipv6 dhcp pd all

This command enables all IPv6 Prefix Delegation (PD) debugging. Command output resembles the
following example.

Brocade# debug ipv6 dhcp pd all

DHCP6 PD: Adding route to DHCP DP table, 2001:DB8::4/64 with nexthop

fe80::100:120:30 interface e 1/1/15

DHCP6: dhcp6_sync_dhcp6_msg_with_standby called

DHCP6: dhcp6_sync_node_pack_dhcp6_msg_to_standby called

DHCP6: dhcp6_sync_node_ack_dhcp6_msg_from_standby called

DHCP6 PD: Removing route from DHCP DP table, lifetime expired, 2001:DB8::4/64 with

nexthop fe80::100:120:30 interface e 1/1/15

DHCP6: dhcp6_sync_dhcp6_msg_with_standby called

DHCP6: dhcp6_sync_node_pack_dhcp6_msg_to_standby called

DHCP6: dhcp6_sync_node_ack_dhcp6_msg_from_standby called

debug ipv6 dhcp pd flash

Syntax: [no] debug ipv6 dhcp pd flash

This command enables PD debugging for read and write to flash file. Command output resembles
the following example.

Brocade# debug ipv6 dhcp pd flash

DHCP6 PD: writing data to file dhcp6_delegated_prefixes_data

DHCP6 PD: Removed file dhcp6_delegated_prefixes_data