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NBAR and X.25 encapsulation

Answered Question
Oct 6th, 2010
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Hello Community!


I have the following question. I have routers running X25 encapsulation on their serial interfaces and I have also enabled the following commands on the respectve interfaces:

ip nbar protocol-discovery

ip flow ingress

ip flow egress

ip route-cache flow


Unfortunately I don't get any information when I run "sh ip cache verbose flow". When I issue the nbar commands on the FastEthernet interface I do get info, so nbar is configured correctly and nothing is wrong with the router.


Does anyone know if nbar protocol-discovery works with X25 encapsulation?


Thanks in advance,

Katerina

Correct Answer by bmathesw about 6 years 10 months ago

Here is the link that you are looking for :

http://www.cisco.com/en/US/docs/ios/12_4t/qos/configuration/guide/qsnbar1.html#wp1050835


hope that helps,

Bhadri

Correct Answer by christof32 about 6 years 10 months ago

Hello Katerina,

As I recall, nbar doesn't support any other traffic than ip.

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bmathesw Wed, 10/06/2010 - 07:24
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  • Cisco Employee,

Hi Katerina,

What happens when you just have flow ingress or egress under the interface?

Can you share the running config and the other show outputs along with show version as well?


thanks,

Bhadri

Correct Answer
christof32 Wed, 10/06/2010 - 22:06
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Hello Katerina,

As I recall, nbar doesn't support any other traffic than ip.

katerina.dardoufa Thu, 10/07/2010 - 00:56
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Hello the config of the two interfaces with nbar protocol-discovery enabled are as follows.


interface Serial0/2/0
description Sindesi me Artemis NUA 22811100 PVC 93
bandwidth 64
ip address 192.168.11.82 255.255.255.0
ip nbar protocol-discovery
ip flow ingress
ip flow egress
encapsulation x25 ietf
ip ospf cost 1500
ip ospf hello-interval 10
ip ospf priority 0
x25 address 22811100
x25 ltc 3
x25 pvc 2 ip 192.168.11.2 21713190 broadcast



interface FastEthernet0/0
description $ETH-LAN$$ETH-SW-LAUNCH$$INTF-INFO-FE 0$
ip address 192.168.82.1 255.255.255.0
ip accounting output-packets
ip nbar protocol-discovery
ip flow ingress
ip flow egress
duplex auto
speed auto
bridge-group 1



Output of commands:

R-341#sh ip cache verbose flow
IP packet size distribution (6013 total packets):
   1-32   64   96  128  160  192  224  256  288  320  352  384  416  448  480
   .000 .033 .893 .000 .001 .002 .000 .032 .035 .000 .000 .000 .000 .000 .000


    512  544  576 1024 1536 2048 2560 3072 3584 4096 4608
   .000 .000 .000 .000 .000 .000 .000 .000 .000 .000 .000


IP Flow Switching Cache, 278544 bytes
  2 active, 4094 inactive, 1736 added
  32897 ager polls, 0 flow alloc failures
  Active flows timeout in 30 minutes
  Inactive flows timeout in 15 seconds
IP Sub Flow Cache, 34056 bytes
  2 active, 1022 inactive, 1736 added, 1736 added to flow
  0 alloc failures, 0 force free
  1 chunk, 1 chunk added
  last clearing of statistics never
Protocol         Total    Flows   Packets Bytes  Packets Active(Sec) Idle(Sec)
--------         Flows     /Sec     /Flow  /Pkt     /Sec     /Flow     /Flow
TCP-other            7      0.0         9   112      0.0       2.7      11.5
UDP-DNS           1100      0.0         1    65      0.0       0.6      15.4
UDP-other          618      0.0         6    95      0.0       7.0      15.4
ICMP                 9      0.0        11    59      0.0      15.1      15.3
Total:            1734      0.0         3    86      0.0       2.9      15.4


SrcIf          SrcIPaddress    DstIf          DstIPaddress    Pr TOS Flgs  Pkts
Port Msk AS                    Port Msk AS    NextHop              B/Pk  Active
Fa0/0          192.168.82.2    Null           192.168.82.255  11 00  10       1
008A /24 0                     008A /24 0     0.0.0.0               242     0.0


Fa0/0          192.168.82.2    Null           10.130.107.72   01 00  10       1
0000 /24 0                     0000 /0  0     0.0.0.0                60     0.0



As can be seen I only get traffic for the FastEthernet interface. The version running on the route is : c2801-adventerprisek9-mz.124-24.T3.bin


I tend to agree with christof32, but I haven't found that in any documentation... Any links???


Thanks

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