Practice question

samwinchester

There is this practice question but i think provided answer is wrong. Just to be sure I need input from you guys.



I chose B and C because sh ip int and sh protocols both show ip address as well as up/up status.

where as sh controllers command is just confusing.

tecnodog7

So if you think about it the question is asking for Layer 1 and layer 2 information.

If you look at show protocols it will show you what protocol is running (ip) and if the interface is up and the line protocol is up (l1 and l2) and yes if you have an IP address then that's in there too.

Router1>show protocols
Global values:
Internet Protocol routing is enabled
FastEthernet0/0 is up, line protocol is up
Internet address is 192.168.1.1/24
FastEthernet0/1 is administratively down, line protocol is down
Serial0/0 is up, line protocol is up
Internet address is 192.168.2.1/24

For the show controllers that gives you the FULL on l1 information.


Router1>show controllers fastEthernet ?
<0-9> FastEthernet interface number
Router1>show controllers fastEthernet 0/0
Interface FastEthernet0/0
Hardware is PQUICC MPC860P ADDR: 80C95180, FASTSEND: 80011BA4
DIST ROUTE ENABLED: 0
Route Cache Flag: 0
ADDR_LOW =0x00078580, ADDR_HIGH =0x00005BAD, HASH_HIGH =0x00000100, HASH_LOW =0x00000000
R_DES_ST =0x01DE4720, X_DES_ST =0x01DE4960, R_BUFF_SIZ=0x00000600, ECNTRL =0xF0000006
IEVENT =0x00000000, IMASK =0x0A000000, IVEC =0xC0000000, R_DES_ACT=0x01000000
X_DES_ACT=0x00000000, MII_DATA =0x504A0062, MII_SPEED =0x00000014, R_BOUND =0x00000600
R_FSTART =0x00000500, X_FSTART =0x00000440, FUN_CODE =0x7F000000, R_CNTRL =0x00000004
R_HASH =0x320005F2
X_CNTRL =0x00000004
HW filtering information:
Promiscuous Mode Disabled
Software MAC address filter(hash:length/addr/mask/hits):
pquicc_fec_instance=0x80C96EE0
rx ring entries=64, tx ring entries=32
rxring=0x1DE4720, rxr shadow=0x80C970D4, rx_head=13, rx_tail=0
txring=0x1DE4960, txr shadow=0x80C97200, tx_head=27, tx_tail=27, tx_count=0


RX_RING_ENTRIES
status 8000, len 175, buf_ptr 1DF7680
status 8000, len 175, buf_ptr 1DF7CE0
status 8000, len 175, buf_ptr 1DF8340


show ip int br in strictly showing l2 and l3

That's what my understanding is.

Hope this helps maybe i'm wrong and some guru's can correct me

samwinchester

tecnodog7 wrote: »

So if you think about it the question is asking for Layer 1 and layer 2 information.

If you look at show protocols it will show you what protocol is running (ip) and if the interface is up and the line protocol is up (l1 and l2) and yes if you have an IP address then that's in there too.

Router1>show protocols
Global values:
Internet Protocol routing is enabled
FastEthernet0/0 is up, line protocol is up
Internet address is 192.168.1.1/24
FastEthernet0/1 is administratively down, line protocol is down
Serial0/0 is up, line protocol is up
Internet address is 192.168.2.1/24

For the show controllers that gives you the FULL on l1 information.


Router1>show controllers fastEthernet ?
<0-9> FastEthernet interface number
Router1>show controllers fastEthernet 0/0
Interface FastEthernet0/0
Hardware is PQUICC MPC860P ADDR: 80C95180, FASTSEND: 80011BA4
DIST ROUTE ENABLED: 0
Route Cache Flag: 0
ADDR_LOW =0x00078580, ADDR_HIGH =0x00005BAD, HASH_HIGH =0x00000100, HASH_LOW =0x00000000
R_DES_ST =0x01DE4720, X_DES_ST =0x01DE4960, R_BUFF_SIZ=0x00000600, ECNTRL =0xF0000006
IEVENT =0x00000000, IMASK =0x0A000000, IVEC =0xC0000000, R_DES_ACT=0x01000000
X_DES_ACT=0x00000000, MII_DATA =0x504A0062, MII_SPEED =0x00000014, R_BOUND =0x00000600
R_FSTART =0x00000500, X_FSTART =0x00000440, FUN_CODE =0x7F000000, R_CNTRL =0x00000004
R_HASH =0x320005F2
X_CNTRL =0x00000004
HW filtering information:
Promiscuous Mode Disabled
Software MAC address filter(hash:length/addr/mask/hits):
pquicc_fec_instance=0x80C96EE0
rx ring entries=64, tx ring entries=32
rxring=0x1DE4720, rxr shadow=0x80C970D4, rx_head=13, rx_tail=0
txring=0x1DE4960, txr shadow=0x80C97200, tx_head=27, tx_tail=27, tx_count=0


RX_RING_ENTRIES
status 8000, len 175, buf_ptr 1DF7680
status 8000, len 175, buf_ptr 1DF7CE0
status 8000, len 175, buf_ptr 1DF8340


show ip int br in strictly showing l2 and l3

That's what my understanding is.

Hope this helps maybe i'm wrong and some guru's can correct me

The other command is sh ip int ---> not sh ip int bri


and that also shows fa 0/0 is up and protocol is up as well as ip address

This is where I get confused.


and also sh ip int bri also shows all that info.

clarson

well, I agree with you. B&C I don't see an ip address in the show controllers output above