Command:

show controllers cbus


Mode:

Router#


Syntax:

show controllers cbus

Syntax Description:

This command has no arguments or keywords.

 

Command Description:

 

To display all information under the cBus controller card, use the show controllers cbus command in privileged EXEC mode on the Cisco 7500 series routers. This command also shows the capabilities of the card and reports controller-related failures.


Example:

The following is partial sample output from the show controller cbus command:

 

Router# show controllers cbus

Switch Processor 3, hardware version 11.1, microcode version 215.1

Microcode loaded from system

512 Kbytes of main memory, 128 Kbytes cache memory

16 256 byte buffers, 4 1024 byte buffers, 130 1520 byte buffers, 63 4484 byte buffers

Restarts: 0 line down, 0 hung output, 0 controller error

FSIP 0, hardware version 1.1, microcode version 10.13

Microcode loaded from system

Controller Sync: 56 timeouts, 56 resyncs 0 failures, 1 max phase count

Interface 0 - Serial 0/0, electrical interface is V.35 DTE

31 buffer RX queue threshold, 10 buffer TX queue limit, buffer size 1520

TX queue length is 1

ift 0001, rql 14, tq 0000 04E0, tql 3

Transmitter delay is 0 microseconds

Interface Processors (IPs) must respond to cBus commands within the prescribed time. Sometimes the IPs may not respond within this time due to heavy traffic or some problem in the IP's hardware or firmware. Then the IP's response to cBus commands may be out of sync. When this situation occurs, the Route Processor (RP) must resync the IP. Currently CIP, FSIP, FEIP, RVIP, and SVIP support the resync mechanism.

Table 17 describes significant fields shown in the display.

Table 17   show controllers cbus Field Descriptions

Field

Description

timeouts

Number of times the IP did not respond to a cBus command within the allotted time.

resyncs

If the IP supports the resync mechanism, then this count is the same as the timeouts value.

failures

Number of resynchronization failures.

max phase count

High count of phase synchronization; that is, the maximum attempts tried before the sync was successful. Maximum number of resync attempts is 16 before the failures counter is incremented.


Note   The timeouts, resyncs, and max phase count values do not imply any problem in the IP. The failures value implies a problem and usually end in a console error message.


The following is a partial output display from the show controllers cbus command on a Cisco 7500 series router with one VIP2 interface processor. This example does not show output from additional interface processors that are usually installed in a Cisco 7500 series router.

Router# show controller cbus

MEMD at 40000000, 2097152 bytes (unused 2752, recarves 1, lost 0)

RawQ 48000100, ReturnQ 48000108, EventQ 48000110

BufhdrQ 48000138 (2849 items), LovltrQ 48000150 (42 items, 1632 bytes)

IpcbufQ 48000158 (32 items, 4096 bytes)

3570 buffer headers (48002000 - 4800FF10)

pool0: 15 buffers, 256 bytes, queue 48000140

pool1: 368 buffers, 1536 bytes, queue 48000148

pool2: 260 buffers, 4544 bytes, queue 48000160

pool3: 4 buffers, 4576 bytes, queue 48000168

slot1: VIP2, hw 2.2, sw 200.50, ccb 5800FF30, cmdq 48000088, vps 8192

software loaded from system

FLASH ROM version 255.255

Fast Ethernet1/0/0, addr 0000.0c41.6c20 (bia 0000.0c41.6c20)

gfreeq 48000148, lfreeq 480001D0 (1536 bytes), throttled 0

rxlo 4, rxhi 30, rxcurr 0, maxrxcurr 0

txq 48001A00, txacc 48001A02 (value 0), txlimit 20

Ethernet1/1/0, addr 0000.0c41.6c28 (bia 0000.0c41.6c28)

gfreeq 48000148, lfreeq 480001D8 (1536 bytes), throttled 0

rxlo 4, rxhi 30, rxcurr 0, maxrxcurr 0

txq 48001A08, txacc 48001A0A (value 0), txlimit 20

Ethernet1/1/1, addr 0000.0c41.6c29 (bia 0000.0c41.6c29)

gfreeq 48000148, lfreeq 480001E0 (1536 bytes), throttled 0

rxlo 4, rxhi 30, rxcurr 0, maxrxcurr 0

txq 48001A10, txacc 48001A12 (value 0), txlimit 20

Ethernet1/1/2, addr 0000.0c41.6c2a (bia 0000.0c41.6c2a)

gfreeq 48000148, lfreeq 480001E8 (1536 bytes), throttled 0

rxlo 4, rxhi 30, rxcurr 0, maxrxcurr 0

txq 48001A18, txacc 48001A1A (value 0), txlimit 20

Ethernet1/1/3, addr 0000.0c41.6c2b (bia 0000.0c41.6c2b)

gfreeq 48000148, lfreeq 480001F0 (1536 bytes), throttled 0

rxlo 4, rxhi 30, rxcurr 0, maxrxcurr 0

txq 48001A20, txacc 48001A22 (value 0), txlimit 20

Ethernet1/1/4, addr 0000.0c41.6c2c (bia 0000.0c41.6c2c)

gfreeq 48000148, lfreeq 480001F8 (1536 bytes), throttled 0

rxlo 4, rxhi 30, rxcurr 0, maxrxcurr 0

txq 48001A28, txacc 48001A2A (value 0), txlimit 20

Ethernet1/1/5, addr 0000.0c41.6c2d (bia 0000.0c41.6c2d)

gfreeq 48000148, lfreeq 48000200 (1536 bytes), throttled 0

rxlo 4, rxhi 30, rxcurr 0, maxrxcurr 0

txq 48001A30, txacc 48001A32 (value 0), txlimit 20

Ethernet1/1/6, addr 0000.0c41.6c2e (bia 0000.0c41.6c2e)

gfreeq 48000148, lfreeq 48000208 (1536 bytes), throttled 0

rxlo 4, rxhi 30, rxcurr 0, maxrxcurr 0

txq 48001A38, txacc 48001A3A (value 0), txlimit 20

Ethernet1/1/7, addr 0000.0c41.6c2f (bia 0000.0c41.6c2f)

gfreeq 48000148, lfreeq 48000210 (1536 bytes), throttled 0

rxlo 4, rxhi 30, rxcurr 0, maxrxcurr 0

txq 48001A40, txacc 48001A42 (value 0), txlimit 20

The following is a partial ouput display of the show controllers cbus command for a Packet-over-SONET Interface Processor (POSIP) in slot 0; its single Packet OC-3 interface is Posi0/0:

Router# show controllers cbus

slot0: POSIP, hw 2.1, sw 200.01, ccb 5800FF30, cmdq 48000080, vps 8192

software loaded from flash slot0:rsp_posip.new

FLASH ROM version 160.4, VPLD version 2.2

Posi0/0, applique is SONET

gfreeq 48000148, lfreeq 48000158 (4480 bytes), throttled 0

rxlo 4, rxhi 226, rxcurr 0, maxrxcurr 186

txq 48000160, txacc 48000082 (value 150), txlimit 150

The following is partial output display from the show controllers cbus command for a Multichannel Interface Processor (MIP). Not all of the 23 channels defined on serial interface 1/0 are shown.

slot1: MIP, hw 1.1, sw 205.03, ccb 5800FF40, cmdq 48000088, vps 8192

software loaded from system

T1 1/0, applique is Channelized T1

gfreeq 48000130, lfreeq 480001B0 (1536 bytes), throttled 0

rxlo 4, rxhi 360, rxcurr 0, maxrxcurr 3

Serial1/0:0, txq 480001B8, txacc 48000082 (value 3), txlimit 3

Serial1/0:1, txq 480001B8, txacc 4800008A (value 3), txlimit 3

Serial1/0:2, txq 480001B8, txacc 48000092 (value 3), txlimit 3

Serial1/0:3, txq 480001B8, txacc 4800009A (value 3), txlimit 3

Serial1/0:4, txq 480001B8, txacc 480000A2 (value 3), txlimit 3

Serial1/0:5, txq 480001B8, txacc 480000AA (value 3), txlimit 3

Serial1/0:6, txq 480001B8, txacc 480000B2 (value 3), txlimit 3

Serial1/0:7, txq 480001B8, txacc 480000BA (value 3), txlimit 3

Table 18 describes significant fields in the per-slot part of these displays.

Table 18   show controllers cbus Command�Per-Slot Field Descriptions

Field

Description

slot1:

Slot location of the specific interface processor (in this case Packet-over-SONET Interface Processor).

hw

Version number of the card.

sw

Version number of the card's internal software (in ROM).

software loaded from

Source device and file name from which the router software was loaded.

FLASH ROM version VPLD version

Version of Flash ROM.

Pos1/0, applique is SONET

Location of the specific interface and the hardware applique type (in this case a Packet OC-3 interface).

gfreeq

Location of the global free queue that is shared among similar interfaces.

lfreeq

Location of the local free queue, which is a private queue of MEMD buffers.

throttled

Number of times input packet processing has been throttled on this interface.

rxlo

Minimum number of MEMD buffers held on local free queue. When idle, the interface returns buffers from its local queue to the global free queue until only this number of buffers remain in the local queue.

rxhi

Maximum number of MEMD buffers that the interface can remove from the global free queue in order to populate its local queue.

rxcurr

Number of MEMD buffers currently on the local free queue.

maxrxcurr

Maximum number of MEMD buffers that were enqueued on the local free queue.

txq

Address of the transmit queue.

txacc

Address of the transmit queue accumulator.

txlimit

Maximum number of buffers allowed in the transmit queue.

The following is a sample output display from the show controllers cbus command on a Cisco 7500 series router:

Router# show controllers cbus

cBus 1, controller type 3.0, microcode version 2.0

128 Kbytes of main memory, 32 Kbytes cache memory

40 1520 byte buffers, 14 4484 byte buffers

Restarts: 0 line down, 0 hung output, 0 controller error

HSCI 1, controller type 10.0, microcode version 129.3

Interface 6 - Hssi0, electrical interface is Hssi DTE

5 buffer RX queue threshold, 7 buffer TX queue limit, buffer size 1520

ift 0004, rql 2, tq 0000 0000, tql 7

Transmitter delay is 0 microseconds

MEC 3, controller type 5.1, microcode version 130.6

Interface 18 - Ethernet2, station address 0000.0c02.a03c (bia 0000.0c02.a03c)

10 buffer RX queue threshold, 7 buffer TX queue limit, buffer size 1520

ift 0000, rql 10, tq 0000 0000, tql 7

Transmitter delay is 0 microseconds

Interface 19 - Ethernet3, station address 0000.0c02.a03d (bia 0000.0c02.a03d)

10 buffer RX queue threshold, 7 buffer TX queue limit, buffer size 1520

ift 0000, rql 10, tq 0000 0000, tql 7

Transmitter delay is 0 microseconds

Table 19 describes the fields shown in the following lines of output from the display.

cBus 1, controller type 3.0, microcode version 2.0

128 Kbytes of main memory, 32 Kbytes cache memory

40 1520 byte buffers, 14 4484 byte buffers

Restarts: 0 line down, 0 hung output, 0 controller error

Table 19   show controllers cbus Field Descriptions�Part 1

Field

Description

cBus 1

Card type and number (varies depending on card).

controller type 3.0

Version number of the card.

microcode version 2.0

Version number of the card's internal software (in ROM).

128 Kbytes of main memory

Amount of main memory on the card.

32 Kbytes cache memory

Amount of cache memory on the card.

40 1520 byte buffers

Number of buffers of this size on the card.

14 4484 byte buffers

Number of buffers of this size on the card.

Restarts

  • 0 line down

  • 0 hung output

  • 0 controller error

Count of restarts for the following conditions:

  • Communication line down

  • Output unable to transmit

  • Internal error

Table 20 describes the fields shown in the following lines of output from the display:

HSCI 1, controller type 10.0, microcode version 129.3

Interface 6 - Hssi0, electrical interface is Hssi DTE

5 buffer RX queue threshold, 7 buffer TX queue limit, buffer size 1520

ift 0004, rql 2, tq 0000 0000, tql 7

Transmitter delay is 0 microseconds

Table 20   show controllers cbus Field Descriptions�Part 2

Field

Description

HSCI 1

Card type and number (varies depending on card).

controller type 10.0

Version number of the card.

microcode version 129.3

Version number of the card's internal software (in ROM).

Interface 6

Physical interface number.

Hssi 0

Logical name for this interface.

electrical interface is Hssi DTE

Self-explanatory.

5 buffer RX queue threshold

Maximum number of buffers allowed in the receive queue.

7 buffer TX queue limit

Maximum number of buffers allowed in the transmit queue.

buffer size 1520

Size of the buffers on this card (in bytes).

ift 0004

Interface type code:

  • 0 = EIP

  • 1 = FSIP

  • 4 = HIP

  • 5 = TRIP

  • 6 = FIP

  • 7 = AIP

rql 2

Receive queue limit. Current number of buffers allowed for the receive queue. It is used to limit the number of buffers used by a particular inbound interface. When equal to 0, all of that interface's receive buffers are in use.

tq 0000 0000

Transmit queue head and tail pointers.

tql 7

Transmit queue limit. Current number of buffers allowed for transmit queue. It limits the maximum cBus buffers allowed to sit on a particular interface's transmit queue.

Transmitter delay is 0 microseconds

Transmitter delay between the packets.

The following is a sample output display from the show controllers cbus command for an AIP installed in IP slot 4. The running AIP microcode is Version 170.30, the PLIM type is 4B/5B, and the available bandwidth is 100 Mbps:

Router# show controllers cbus

Switch Processor 5, hardware version 11.1, microcode version 170.46

Microcode loaded from system

512 Kbytes of main memory, 128 Kbytes cache memory

60 1520 byte buffers, 91 4496 byte buffers

Restarts: 0 line down, 0 hung output, 0 controller error

AIP 4, hardware version 1.0, microcode version 170.30

Microcode loaded from system

Interface 32 - ATM4/0, PLIM is 4B5B(100Mbps)

15 buffer RX queue threshold, 36 buffer TX queue limit, buffer size 4496

ift 0007, rql 12, tq 0000 0620, tql 36

Transmitter delay is 0 microseconds

The following is a sample output display from the show controllers cbus command for SMIP:

Router# show controllers cbus

SMIP 2, hardware version 1.0, microcode version 10.0
 Microcode loaded from system
 Interface 16 - T1 2/0, electrical interface is Channelized T1
   10 buffer RX queue threshold, 14 buffer TX queue limit, buffer size 1580 ift 0001, rql    7, tq 0000 05B0, tql 14
   Transmitter delay is 0 microseconds


Misconceptions:

           None.


Related Commands:

            None. 


� Cisco Systems, Inc. 2001, 2002, 2003
World Wide Education

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