Troubleshooting Tips - Cisco Catalyst 4500 Series Software Configuration Manual

Chapter 51 Configuring the PPPoE Intermediate Agent
The event option of the command echoes important messages (interface state change to errdisabled due
to PPPoE discovery packets entering at a rate exceeding the configured limit). it is the only event shown
by the debug pppoe intermediate-agent event command.
The all option enables both package and event options.
The following example illustrates how to enter the debug command with the packet option:
Switch# debug pppoe intermediate-agent packet
PPPOE IA Packet debugging is on
*Sep
interface: Gi3/7, vlan : 2 MAC da: ffff.ffff.ffff, MAC sa: aabb.cc00.0000
*Sep
(GigabitEthernet3/4)
*Sep
(GigabitEthernet3/8)
*Sep
interface: Gi3/4, vlan : 2 MAC da: aabb.cc00.0000, MAC sa: 001d.e64c.6512
*Sep
interface: Gi3/8, vlan : 2 MAC da: aabb.cc00.0000, MAC sa: aabb.cc80.0000
*Sep
(GigabitEthernet3/7)
*Sep
interface: Gi3/7, vlan : 2 MAC da: 001d.e64c.6512, MAC sa: aabb.cc00.0000
*Sep
(GigabitEthernet3/4)
*Sep
interface: Gi3/4, vlan : 2 MAC da: aabb.cc00.0000, MAC sa: 001d.e64c.6512
The following example illustrates how to enter the debug command with the event option:
Switch# debug pppoe intermediate-agent event
PPPOE IA Event debugging is on
*Jul 30 19:00:10.254: %PPPOE_IA-4-PPPOE_IA_ERRDISABLE_WARNING: PPPOE IA received 5 PPPOE
packets on interface Gi3/7
*Jul 30 19:00:10.254: %PPPOE_IA-4-PPPOE_IA_RATE_LIMIT_EXCEEDED: The interface Gi3/7 is
receiving more than the threshold set
*Jul 30 19:00:10.394: %PM-4-ERR_DISABLE: STANDBY:pppoe-ia-rate-limit error detected on
Gi3/7, putting Gi3/7 in err-disable stat

Troubleshooting Tips

When the radius-server attribute 31 remote-id global configuration command is entered in the PPPoE
Agent Remote-ID Tag and DSL Line Characteristics feature configuration on the BRAS, the
debug radius privileged EXEC command can be used to generate a report that includes information
about the incoming access interface, where discovery frames are received, and about the session being
established in PPPoE extended NAS-Port format (format d).
2 06:12:56.133: PPPOE_IA: Process new PPPoE packet, Message type: PADI, input
2 06:12:56.137: PPPOE_IA: received new PPPOE packet from inputinterface
2 06:12:56.137: PPPOE_IA: received new PPPOE packet from inputinterface
2 06:12:56.137: PPPOE_IA: Process new PPPoE packet, Message type: PADO, input
2 06:12:56.137: PPPOE_IA: Process new PPPoE packet, Message type: PADO, input
2 06:12:56.137: PPPOE_IA: received new PPPOE packet from inputinterface
2 06:12:56.137: PPPOE_IA: Process new PPPoE packet, Message type: PADR, input
2 06:12:56.145: PPPOE_IA: received new PPPOE packet from inputinterface
2 06:12:56.145: PPPOE_IA: Process new PPPoE packet, Message type: PADS, input
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Troubleshooting Tips
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