How to extract network data from output - regex?

Question

How to extract network data from output - regex?

I have some network output which i would like to return only certain prefixes based on conditions.

From the below output, I would like to return a list of all destinations which have the same destination, but different protocol. For example, for the destination 10.11.8.18/32, we have this via protocol 'O_ASE2' and 'BGP instance default', so the output should look something like this;

Destination: 10.11.8.18/32 Protocol: O_ASE2 Preference: 150 Protocol: BGP instance default Preference: 255

All the other entries should be ignored.

I've tried to work with regex and what not, but my regex skills are lacking.

If someone can assist, that would be great!

Thank you



Destination: 10.0.0.0/8
   Protocol: O_ASE2
 Process ID: 2
  SubProtID: 0x8                    Age: 27d03h34m48s
       Cost: 1               Preference: 150
      IpPre: N/A             QosLocalID: N/A
        Tag: 3489725548           State: Inactive Adv
  OrigTblID: 0x0                OrigVrf: default-vrf
    TableID: 0x102               OrigAs: 0
      NibID: 0x13000016          LastAs: 0
     AttrID: 0x12000003        Neighbor: 0.0.0.0
      Flags: 0x41           OrigNextHop: 10.10.2.1
      Label: NULL           RealNextHop: 10.10.2.1
    BkLabel: NULL             BkNextHop: N/A
  Tunnel ID: Invalid          Interface: Vsi-interface20000
BkTunnel ID: Invalid        BkInterface: N/A
   FtnIndex: 0x0           TrafficIndex: N/A
  Connector: N/A                 PathID: 0x0

Destination: 10.11.0.0/16
   Protocol: O_ASE1
 Process ID: 2
  SubProtID: 0x4                    Age: 33d04h56m51s
       Cost: 3               Preference: 150
      IpPre: N/A             QosLocalID: N/A
        Tag: 0                    State: Active Adv
  OrigTblID: 0x0                OrigVrf: default-vrf
    TableID: 0x102               OrigAs: 0
      NibID: 0x13000012          LastAs: 0
     AttrID: 0x12000002        Neighbor: 0.0.0.0
      Flags: 0x10041        OrigNextHop: 10.10.2.1
      Label: NULL           RealNextHop: 10.10.2.1
    BkLabel: NULL             BkNextHop: N/A
  Tunnel ID: Invalid          Interface: Vsi-interface20000
BkTunnel ID: Invalid        BkInterface: N/A
   FtnIndex: 0x0           TrafficIndex: N/A
  Connector: N/A                 PathID: 0x0

Destination: 10.11.8.18/32
   Protocol: O_ASE2
 Process ID: 2
  SubProtID: 0x8                    Age: 12d02h38m51s
       Cost: 1               Preference: 150
      IpPre: N/A             QosLocalID: N/A
        Tag:                 State: Active Adv
  OrigTblID: 0x0                OrigVrf: default-vrf
    TableID: 0x102               OrigAs: 0
      NibID: 0x13000016          LastAs: 0
     AttrID: 0x12000003        Neighbor: 0.0.0.0
      Flags: 0x10041        OrigNextHop: 10.10.2.1
      Label: NULL           RealNextHop: 10.10.2.1
    BkLabel: NULL             BkNextHop: N/A
  Tunnel ID: Invalid          Interface: Vsi-interface20000
BkTunnel ID: Invalid        BkInterface: N/A
   FtnIndex: 0x0           TrafficIndex: N/A
  Connector: N/A                 PathID: 0x0

Destination: 10.11.8.18/32 Protocol: BGP instance default Process ID: 0 SubProtID: 0x10 Age: 12d02h38m51s Cost: 0 Preference: 255 IpPre: N/A QosLocalID: N/A Tag: 0 State: Inactive Adv OrigTblID: 0x0 OrigVrf: default-vrf TableID: 0x102 OrigAs: 0 NibID: 0x18000000 LastAs: 0 AttrID: 0xffffffff Neighbor: 10.10.3.1 Flags: 0x4000040 OrigNextHop: 10.10.3.1 Label: NULL RealNextHop: 10.10.3.1 BkLabel: NULL BkNextHop: N/A Tunnel ID: Invalid Interface: Vsi-interface30000 BkTunnel ID: Invalid BkInterface: N/A FtnIndex: 0x0 TrafficIndex: N/A Connector: N/A PathID: 0x0

regex

asked on Stack Overflow Aug 13, 2019 by

ik_tech

1 Answer

You can use this regex along with findall:

"Destination: (?P<ip>(?:\d+\.?)+\/\d+)\s+Protocol: (?P<protocol>\w+)"

Matches:

[('10.0.0.0/8', 'O_ASE2'), ('10.11.0.0/16', 'O_ASE1'), ('10.11.8.18/32', 'O_ASE2'), ('10.11.8.18/32', 'BGP')]

Then you can group by the IP.

answered on Stack Overflow Aug 13, 2019 by

palvarez

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