Hi,
I see this interesting topic, and i have a question about this problem of L3 incompletes.
We have in our network one Juniper T320 router connected to one Cisco 6506 router, by two 10Gigabits module (Xenpak).
We don't have any errors on Cisco side, but we have a lot of L3 incompletes on Juniper side. Let's see below the logs of the interface:
user@Juniper> show interfaces ge-6/1/0 extensive
Physical interface: ge-6/1/0, Enabled, Physical link is Up
Interface index: 154, SNMP ifIndex: 110, Generation: 156
Link-level type: Ethernet, MTU: 4488, Speed: 10Gbps, Loopback: Disabled, Source filtering: Disabled, Flow control: Enabled
Device flags : Present Running
Interface flags: SNMP-Traps Internal: 0x4000
Link flags : None
CoS queues : 8 supported, 8 maximum usable queues
Hold-times : Up 0 ms, Down 0 ms
Current address: 00:90:69:07:67:13, Hardware address: 00:90:69:07:67:13
Last flapped : 2008-08-29 08:38:41 UTC (6d 01:17 ago)
Statistics last cleared: 2008-08-29 13:40:01 UTC (5d 20:16 ago)
Traffic statistics:
Input bytes : 78022546933074 1192232512 bps
Output bytes : 116632989219783 1800273856 bps
Input packets: 180112232048 361402 pps
Output packets: 190668360353 374741 pps
Label-switched interface (LSI) traffic statistics:
Input bytes : 0 0 bps
Input packets: 0 0 pps
Input errors:
Errors: 5832099, Drops: 0, Framing errors: 0, Runts: 0, Policed discards: 0, L3 incompletes: 5832099, L2 channel errors: 0, L2 mismatch timeouts: 0,
FIFO errors: 0, Resource errors: 0
Output errors:
Carrier transitions: 0, Errors: 0, Drops: 0, Collisions: 0, Aged packets: 0, FIFO errors: 0, HS link CRC errors: 0, MTU errors: 0, Resource errors: 0
Egress queues: 8 supported, 8 in use
Queue counters: Queued packets Transmitted packets Dropped packets
0 best-effort 117001326913 117001326913 0
1 expedited-fo 24590934127 24590934127 0
2 assured-forw 48903476852 48903476852 0
3 network-cont 172623404 172623404 0
Active alarms : None
Active defects : None
MAC statistics: Receive Transmit
Total octets 82137083919585 116709393641341
Total packets 180117885207 190668160820
Unicast packets 180089052483 169444518117
Broadcast packets 26818249 661759
Multicast packets 2014475 21222980944
CRC/Align errors 0 0
FIFO errors 0 0
MAC control frames 0 0
MAC pause frames 0 0
Oversized frames 0
Jabber frames 0
Fragment frames 0
VLAN tagged frames 180117868392
Code violations 0
Filter statistics:
Input packet count 180117887484
Input packet rejects 5832083
Input DA rejects 5832083
Input SA rejects 0
Output packet count 190668163322
Output packet pad count 9189923448
Output packet error count 0
CAM destination filters: 8, CAM source filters: 0
Packet Forwarding Engine configuration:
{master}
user@Juniper> show version
Model: t320
JUNOS Base OS boot [8.2R4.5]
JUNOS Base OS Software Suite [8.2R4.5]
JUNOS Kernel Software Suite [8.2R4.5]
JUNOS Crypto Software Suite [8.2R4.5]
JUNOS Packet Forwarding Engine Support (M/T Common) [8.2R4.5]
JUNOS Packet Forwarding Engine Support (T-Series) [8.2R4.5]
JUNOS Online Documentation [8.2R4.5]
JUNOS Routing Software Suite [8.2R4.5]
I've already tried to clear statistics on this Juniper router, but i see everyday this counter increment, so it's a problem.
As Juniper says, this error means that the router receives on its input interface IP packets with a wrong size header.
Do you have some ideas to solve this problem?
Thank you for your help.
Best regards,
sunfun