I'm having issues with intermittent link failures when running in auto negotiation mode on a Cisco 7609. The link is on a gigabit fiber interface WS-X6724-SFP and the opposite end is a Media Gateway. Both ends are set for auto negotiation and the cisco end is set to run in access mode. Below is the Cisco interface configuration:
sil06-cisco-rtr1#show run interface gi6/1
Building configuration...
Current configuration : 137 bytes
!
interface GigabitEthernet6/1
description "sil06-7510-2 IPv4 PIM1"
switchport
switchport access vlan 10
switchport mode access
end
!
When the link failure occur it can be cleared by 1) Physically disconnecting the fiber and reinserting, 2) Setting the Cisco interface to shutdown
mode and then no shutdown.
Here's the MGW port settings:
Autoselection : enabled
Traffic Switch : tp.pim1.1
MAC from Serial Number : disabled
HW-Loopback Mask : 0x0
HW-Loopback State : disabled
HT Frequency : 200 MHz
Link Down Persistency : 3 sec
Link Up Persistency : 1 sec
Max Number RTP Ports : 8064
Ethernet Version : v2 (DIX)
Autonegotiation : enabled
Phase Count Delay[ms] Suspend[ms] Page
Init 1 300 0 RESET (0xfffe)
EPS 1 300 0 FD ACK (0x2040)
LPS 0 300 0 FD ACK (0x2040)
nHop 1 300 0 FD ACK (0x2040)
UI 1 300 50 RESET (0xfffe)
RF1 1 300 0 RF1 (0x10)
RF2 1 300 100 RF2 (0x20)
RF1RF2 1 300 0 RF1RF2 (0x30)
Local Autoneg Link time : 10 ms
Pause frame reception capability : enabled
Pause frame reaction : ignored
Redundant Line MAC@ : equal
Link supervision : 0 sec disabled
Long suspicious wait : 0 sec 0 cnx disabled
Non-traffic Laser : enable
No-Redundancy Laser : enable
Line port en.pim1.1 : enabled
Backpanel port in.pim1.endta.1: enabled
Does anyone have suggestion on how to debug or collect data on this failure? Again this is on a Cisco 7609 running Cisco IOS version 15.1.
