I have a 2911 router with a T1 circuit terminated on a VWIC3-2MFT-T1/E1 module.
I frequently observe logg entries in the router as shown below. When these conditions occur, we lose Serial0/0/0:1 IP communications.
May 11 01:52:10: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 1 to priority 10
May 11 01:55:23: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 10 to priority 1
May 11 04:06:53: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 1 to priority 10
May 11 04:08:09: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 10 to priority 1
May 12 07:22:57: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 1 to priority 10
May 12 07:39:57: %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 10 to priority 1
This is not a PRI circuit, just data....specifically an MPLS circuit with our provider.
network-clock-select 1 T1 0/0/0
controller T1 0/0/0
cablelength long 0db
channel-group 1 timeslots 1-24
!
interface Serial0/0/0:1
bandwidth 1544
ip address x.x.x.x y.y.y.y
ip accounting output-packets
ip flow ingress
encapsulation ppp
load-interval 30
no fair-queue
end
I assume this issue is a provider issue, since my router is configured for clock source line....has anyone else seen this and if so, what did you do to resolve the issue ?
Thanks,
SCL
