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Carlos A. Silva
Beginner

[BFD over NVSAT/CRS support]

Hi, 

 

Is BFD over a 9000v that hosted by a CRS running 5.3.4 supported?

 

I have a CRS/9000v connected to an ASR920 that is correctly running BFD with another ASR920, but it won't come up vs the CRS/9000v.

My configuration on the CRS/9000v is:

 

interface Gi128/0/0/2

description xxxxxxxxx

cdp

mtu 9216

ipv4 address x.x.x.x 255.255.255.252

load-interval 30

 

router ospf 1000

router-id x.x.x.x

bfd minimum-interval 100

bfd fast-detect

bfd multiplier 3

mpls ldp sync

mtu-ignore enable

maximum paths 8

nsf ietf

timers throttle lsa all 10 100 1000

timers throttle spf 10 100 1000

timers lsa min-arrival 50

 

router ospf 1000

area 201

   !

   interface Gi128/0/0/2

   bfd minimum-interval 50

   bfd fast-detect

   bfd multiplier 3

   cost 1000

   authentication message-digest

   message-digest-key 100 md5 encrypted XXXXX

   network point-to-point

   passive disable

 

This is what it looks like from CRS side:

 

RP/0/RP1/CPU0:CRS#sh bfd session

Tue Jan 21 12:07:31.458 CST

Interface           Dest Addr           Local det time(int*mult)      State    

                                    Echo             Async   H/W   NPU    

------------------- --------------- ---------------- ---------------- ----------

Te0/0/0/0           z.z.z.z   450ms(150ms*3)   150ms(50ms*3)    UP       

                                                             No    n/a           

[snip]          

Gi128/0/0/0         y.y.y.y   0s               300ms            DOWN     

                                                             No    n/a           

Gi128/0/0/2         X.X.X.X 0s               300ms            DOWN     

                                                             No    n/a           

[snip]

 

This is what it looks like from ASR920:

 

ASR920#sh bfd neighbors

 

IPv4 Sessions

NeighAddr                              LD/RD         RH/RS     State     Int

x.x.x.x                       1/0          Down      Down      Gi0/0/22

ASR920#

 

ASR920#sh bfd neighbors details

 

IPv4 Sessions

NeighAddr                              LD/RD         RH/RS     State     Int

x.x.x.x                         1/0          Down      Down      Gi0/0/22

Session Host: Hardware

OurAddr: x.x.x.x

Handle: 1

Local Diag: 0, Demand mode: 0, Poll bit: 0

MinTxInt: 1000000, MinRxInt: 1000000, Multiplier: 3

Received MinRxInt: 0, Received Multiplier: 0

Holddown (hits): 0(0), Hello (hits): 1000(0)

Rx Count: 396

Tx Count: 469

Elapsed time watermarks: 0 0 (last: 0)

Registered protocols: OSPF CEF

Last packet: Version: 1                  - Diagnostic: 0

             State bit: AdminDown        - Demand bit: 0

             Poll bit: 0                 - Final bit: 0

             C bit: 0                                  

             Multiplier: 0               - Length: 0

             My Discr.: 0                - Your Discr.: 0

             Min tx interval: 0          - Min rx interval: 0

             Min Echo interval: 0      

 

Any ideas? Is there a particular configuration you have to use on BFD over nvsat?

All help is appreciated.

 

Regards,

c.

1 REPLY 1
tkarnani
Cisco Employee

can we try the following?

bfd multipath include location 0/x/cpu0

x will be the line card hosting the satellite.

 

Thanks

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