Cisco CRS-1 - Carrier Routing System Router Troubleshooting Manual page 129

Chapter 4 Troubleshooting Router Switch Fabric
The following output shows Fabric Plane 1 marked as MCAST_DOWN:
RP/0/RP0/CPU0:router(admin)# show controllers fabric plane all detail
Flags: P - plane admin down,
Plane
Id
------------------------------------------------------
0
1
3
4
5
6
7
The fabric plane is operational, but not all destination fabric queue application-specific integrated circuit
(ASICs) can be reached through this fabric plane, as far as the ingress modular services cards (MSCs)
are concerned. Because destinations of multicast traffic cannot be predetermined due to their dynamic
nature, the fabric plane is shown as MCAST_DOWN. Multicast traffic uses the other fabric planes to
deliver data to the appropriate egress MSCs. Unicast traffic continues to use the fabric plane if traffic is
destined to a fabric queue ASIC that is still reachable. If traffic is destined for a fabric queue ASIC that
is deemed unreachable, the other available fabric plane is used instead of the plane in the
MCAST_DOWN state. To change the operational state of a fabric plane from MCAST_DOWN to up,
contact Cisco Technical Support. See the
section on page viii
The following output shows Fabric Plane 0 as administratively shut down:
RP/0/RP0/CPU0:router(admin)# show controllers fabric plane all detail
Flags: P - plane admin down,
Plane
Id
------------------------------------------------------
0
1
2
3
4
5
6
7
OL-21483-02
C - card admin down,
L - link port admin down,
A - asic admin down,
B - bundle port admin Down, b - bundle port oper down
I - bundle admin down,
N - node admin down,
o - other end of link down
f - failed component downstream
m - plane multicast down
Admin Oper Down
State State Flags
UP UP
UP MCAST_DOWN m
UP UP
UP UP
UP UP
UP UP
UP UP
in the Preface.
C - card admin down,
L - link port admin down,
A - asic admin down,
B - bundle port admin Down, b - bundle port oper down
I - bundle admin down,
N - node admin down,
o - other end of link down
f - failed component downstream
m - plane multicast down
Admin Oper Down
State State Flags
DOWN DOWN P
UP UP
UP UP
UP UP
UP UP
UP UP
UP UP
UP UP
Verifying and Troubleshooting the Fabric Plane State
p - plane oper down
c - card oper down
l - linkport oper down
a - asic oper down
i - bundle oper down
n - node down
d - data down
Total Down
Bundles Bundles
0 0
0 0
0 0
0 0
0 0
0 0
0 0
"Obtaining Documentation and Submitting a Service Request"
p - plane oper down
c - card oper down
l - linkport oper down
a - asic oper down
i - bundle oper down
n - node down
d - data down
Total Down
Bundles Bundles
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
Cisco IOS XR Troubleshooting Guide for the Cisco CRS-1 Router
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