Command:

show controllers bri

Mode:

Router#


Syntax:
show controllers bri slot/port

show controllers bri number


Syntax Description:

number

Interface number. The value is 0 through 7 if the router has one 8-port BRI network interface module (NIM), or 0 through 15 if the router has two 8-port BRI NIMs. Interface number values will vary depending on the hardware platform used. The Cisco 3600 series router for example, can have up to 48 interfaces.

slot/port

Backplane slot number and port number on the interface. See your hardware installation manual for the specific slot and port numbers.

 

Command Description:

To display information about the ISDN Basic Rate Interface (BRI), use the show controllers bri privileged EXEC command.


Examples:

The following is a sample of output from the show controllers bri command:

Router#show controllers bri 0

BRI unit 0
D Chan Info:
Layer 1 is ACTIVATED
idb 0x32089C, ds 0x3267D8, reset_mask 0x2
buffer size 1524
RX ring with 2 entries at 0x2101600 : Rxhead 0
00 pak=0x4122E8 ds=0x412444 status=D000 pak_size=0
01 pak=0x410C20 ds=0x410D7C status=F000 pak_size=0
TX ring with 1 entries at 0x2101640: tx_count = 0, tx_head = 0, tx_tail = 0
00 pak=0x000000 ds=0x000000 status=7C00 pak_size=0
0 missed datagrams, 0 overruns, 0 bad frame addresses
0 bad datagram encapsulations, 0 memory errors
0 transmitter underruns
B1 Chan Info:
Layer 1 is ACTIVATED
idb 0x3224E8, ds 0x3268C8, reset_mask 0x0
buffer size 1524
RX ring with 8 entries at 0x2101400 : Rxhead 0
00 pak=0x421FC0 ds=0x42211C status=D000 pak_size=0
01 pak=0x4085E8 ds=0x408744 status=D000 pak_size=0
02 pak=0x422EF0 ds=0x42304C status=D000 pak_size=0
03 pak=0x4148E0 ds=0x414A3C status=D000 pak_size=0
04 pak=0x424D50 ds=0x424EAC status=D000 pak_size=0
05 pak=0x423688 ds=0x4237E4 status=D000 pak_size=0
06 pak=0x41AB98 ds=0x41ACF4 status=D000 pak_size=0
07 pak=0x41A400 ds=0x41A55C status=F000 pak_size=0
TX ring with 4 entries at 0x2101440: tx_count = 0, tx_head = 0, tx_tail = 0
00 pak=0x000000 ds=0x000000 status=5C00 pak_size=0
01 pak=0x000000 ds=0x000000 status=5C00 pak_size=0
02 pak=0x000000 ds=0x000000 status=5C00 pak_size=0
03 pak=0x000000 ds=0x000000 status=7C00 pak_size=0
0 missed datagrams, 0 overruns, 0 bad frame addresses
0 bad datagram encapsulations, 0 memory errors
0 transmitter underruns
B2 Chan Info:
Layer 1 is ACTIVATED
idb 0x324520, ds 0x3269B8, reset_mask 0x2
buffer size 1524
RX ring with 8 entries at 0x2101500 : Rxhead 0
00 pak=0x40FCF0 ds=0x40FE4C status=D000 pak_size=0
01 pak=0x40E628 ds=0x40E784 status=D000 pak_size=0
02 pak=0x40F558 ds=0x40F6B4 status=D000 pak_size=0
03 pak=0x413218 ds=0x413374 status=D000 pak_size=0
04 pak=0x40EDC0 ds=0x40EF1C status=D000 pak_size=0
05 pak=0x4113B8 ds=0x411514 status=D000 pak_size=0
06 pak=0x416ED8 ds=0x417034 status=D000 pak_size=0
07 pak=0x416740 ds=0x41689C status=F000 pak_size=0
TX ring with 4 entries at 0x2101540: tx_count = 0, tx_head = 0, tx_tail = 0
00 pak=0x000000 ds=0x000000 status=5C00 pak_size=0
01 pak=0x000000 ds=0x000000 status=5C00 pak_size=0
02 pak=0x000000 ds=0x000000 status=5C00 pak_size=0
03 pak=0x000000 ds=0x000000 status=7C00 pak_size=0
0 missed datagrams, 0 overruns, 0 bad frame addresses
0 bad datagram encapsulations, 0 memory errors
0 transmitter underruns
 

The following table describes the significant fields in the display.

Table: Show Controllers BRI Field Descriptions

Field Description

BRI unit 0

Interface type and unit number

Chan Info

D  and B channel numbers

Layer 1 is ACTIVATED

Status can be DEACTIVATED, PENDING ACTIVATION, or ACTIVATED

idb
ds
reset_mask

Information about internal data structures and parameters

buffer size

Number of bytes allocated for buffers

RX ring with - entries at -

Information about the Receiver Queue

Rxhead

Start of the Receiver Queue

pak
ds
status
pak_size

Information about internal data structures and parameters

TX ring with - entries at -

Information about the Transmitter Queue

tx_count

Number of packets to transmit

tx_head

Start of the transmit list

tx_tail

End of the transmit list

missed datagrams

Incoming packets missed due to internal errors

overruns

Number of times the receiver hardware was unable to hand received data to a hardware buffer because the input rate exceeded the receiver's ability to handle the data.

bad frame addresses

Frames received with a cyclic redundancy check (CRC) error and noninteger number of octets

bad datagram encapsulations

Packets received with bad encapsulation

memory errors

Internal direct memory access (DMA) memory errors

transmitter underruns

Number of times that the transmitter has been running faster than the router can handle

The following is a partial sample output from the show controllers bri command on a Cisco 7200 series router:

BRI slot 2 interface 0 with integrated NT1
Layer 1 is ACTIVATED. (ISDN L1 State F7)
Master clock for slot 2 is bri interface 0.
Total chip configuration successes: 193, failures: 0, timeouts: 0
D Channel Information:
  Channel state: UP  Channel IDB: 6092AC64
  RX ring entries: 5, buffer size 512
  RX descriptor ring: head = 165F4D8, tail = 165F508
  RX buffer ring: head = 6093A260, tail = 6093A290
  00 params=0x2000000 status=0x0 data ptr=0x1650F84 next ptr=0x165F4D8
  01 params=0x2000000 status=0xC0080000 data ptr=0x1651884 next ptr=0x165F4E8
  02 params=0x2000000 status=0xC0080000 data ptr=0x1651644 next ptr=0x165F4F8
  03 params=0x2000000 status=0x0 data ptr=0x1651404 next ptr=0x165F508
  04 params=0x42000000 status=0x0 data ptr=0x16511C4 next ptr=0x165F4C8
  TX ring entries: 5, in use: 0, buffer size 512
  TX descriptor ring: head = 3C2049C0, tail = 3C2049C0
  TX buffer ring: head = 608EC0C4, tail = 608EC0C4
  00 params=0x80000000 data ptr=0x0000000 next ptr=0x4D0049A8
  01 params=0x80000000 data ptr=0x0000000 next ptr=0x4D0049B4
  02 params=0x80000000 data ptr=0x0000000 next ptr=0x4D0049C0
  03 params=0xC0000000 data ptr=0x0000000 next ptr=0x4D0049CC
  04 params=0x0 data ptr=0x0000000 next ptr=0x4D00499C
  List of timeslots (sw): 2

The following table describes the significant fields in the display.

Table: Show Controllers BRI Field Descriptions

Field Description

BRI slot 2 interface 0 with integrated NTI

Interface type and slot and port number

Layer 1 is ACTIVATED

Status can be DEACTIVATED, PENDING ACTIVATION, or ACTIVATED

Master clock

The first interface that comes up on an MBRI port adapter holds the master clock. This clock is used for all interfaces on that port adapter. If the master clock interface goes down, the second interface that came up becomes the master clock interface.

Total chip configuration successes

Counters of successful chip configuration

failures

Counters of bad chip configuration

timeouts

Counters of failing to initialize chip

D Channel Information

Information related to D-channel status

Channel state

Channel state can be UNUSED, IDLE, DOWN, STANDBY, UP, THROTTLED, ILLEGAL

Channel IDB

Internal interface channel description

RX (or TX) ring entries

Internal receive queue

RX (or TX) descriptor ring

Internal receive queue to manage hardware chip

RX (or TX) buffer ring

Internal receive queue to hold inbound packets

Rxhead

Start of the receiver queue

params, status, data ptr, next ptr

Information about internal data structures and params

List of timeslots (sw)

Timeslots assigned to this channel


Misconceptions:
None

Related Commands:
show controllers serial
show controllers ethernet

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

Converted from CHM to HTML with chm2web Pro 2.85 (unicode)