ASR 903 BDI interface speed

[andreas.fuchs]

Hello guys,
we configured

BDI interfaces

on our ASR 903 and using a

Tengig interface

for bridge domains....
We wonder which speed the

BDI interfaces

use?
Bandwith parameter shows

1000000 Kbit/sec

. but this I think is important for overlaying protocols and has nothing to do with the actual speed right?

How can we check if the BID "uses" the full speed from the

Tengig interface

, anything we need to configure or will the

BDI interfaces

use the full 10Gig?

Config:

interface TenGigabitEthernet0/0/0
description connect wan wansw01 1/4
no ip address
cdp enable
service instance 1 ethernet
encapsulation untagged
l2protocol peer cdp lacp
bridge-domain 1
!
service instance 3207 ethernet
encapsulation dot1q 3207
rewrite ingress tag pop 1 symmetric
bridge-domain 3207
!
!
interface BDI3207
description DC-GWAN-SIG
vrf forwarding gwan
ip address 172.25.82.53 255.255.255.248
!
nekwz3dcrt01#sh int BDI3207
BDI3207 is up, line protocol is up
Hardware is BDI, address is acf5.e628.2d3f (bia acf5.e628.2d3f)
Description: DC-GWAN-SIG
Internet address is 172.25.82.53/29
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,

...
Thanks for your feedback
Rgds

[balaji.bandi]

can you post

show interface ten 0/0/0

[andreas.fuchs]

#sh int TenGigabitEthernet0/0/0
TenGigabitEthernet0/0/0 is up, line protocol is up
Hardware is A900-IMA2Z, address is acf5.e628.2d00 (bia acf5.e628.2d00)
Description: connect wan nekwn1wansw01 1/4
MTU 1500 bytes, BW 10000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 16/255, rxload 16/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full Duplex, 10000Mbps, link type is force-up, media type is 10GBase-SR
output flow-control is unsupported, input flow-control is on
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:57, output 00:00:27, output hang never
Last clearing of "show interface" counters never
Input queue: 0/375/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 629755000 bits/sec, 117927 packets/sec
5 minute output rate 634048000 bits/sec, 121061 packets/sec
441836794290 packets input, 281688341404048 bytes, 0 no buffer
Received 10025304 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 38476179 multicast, 0 pause input
487564168788 packets output, 330754574807756 bytes, 0 underruns
Output 237 broadcasts (0 IP multicasts)
0 output errors, 0 collisions, 2 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out

[Giuseppe Larosa · Accepted solution]

Hello @andreas.fuchs ,

>> Bandwith parameter shows

1000000 Kbit/sec

but this I think is important for overlaying protocols and has nothing to do with the actual speed right?

Your understanding is correct the BDI bandwidth value does not cause traffic rate limiting on the physical

interface tengiga

You may want to change the bandwidth under the

interface BDI

just for documentation purposes

Hope to help

Giuseppe

[Ramblin Tech]

"How can we check if the BDI "uses" the full speed from the

Tengig interface

anything we need to configure or will the

BDI interfaces

use the full 10Gig?"

In the absence of QoS policies, the scheduler will default to allocating all the available bandwidth of the parent physical interface to the BDI. If you have more than one BDI, and no QoS policies, all BDIs will contend for the physical interface's available bandwidth.

[andreas.fuchs]

Thanks guys, just wanted to confirm if my thoughts are correct. 
Cheers