---
name: "cisco_ios2dlf"
section: "1"
platform: "linux"
package: "lire"
version: "2.1.1-8"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/cisco_ios2dlf"
---

# cisco\_ios2dlf(1)

convert cisco logs to dlf format

## NAME

cisco\_ios2dlf - convert cisco logs to dlf format

## SYNOPSIS

**cisco\_ios2dlf**

## DESCRIPTION

This script expects syslog-type logs from a CISCO IOS router on stdin.  These look like e.g.

```
 Jul  3 00:00:39 router 40108: 4d09h: %SEC-6-IPACCESSLOGP:
  list FR_VA_in permitted udp 192.168.19.1(137) (Serial0/0.2 DLCI 120)
  -> 192.168.19.255(137), 2 packets
 Jul  3 00:02:39 router 40109: 4d09h: %SEC-6-IPACCESSLOGP: list FR_VA_in
  permitted udp 192.168.80.42(138) (Serial0/0.2 DLCI 120) ->
  192.60.60.148(138), 1 packet
 Jul  3 00:02:39 router 40110: 4d09h: %SEC-6-IPACCESSLOGDP: list FR_VA_in
  permitted icmp 192.168.80.82 (Serial0/0.2 DLCI 120) -> 149.1.1.1 (8/0),
  1 packet
```

or

```
 Aug 19 04:02:34 gateway.foo.bar 218963: Aug 19 04:02:32.977:
  %LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:1, changed state
  to down
 Aug 19 04:02:34 gateway.foo.bar 218964: Aug 19 04:02:33.262:
  %ISDN-6-DISCONNECT: Interface BRI0:1  disconnected from 172605440 acme,
  call lasted 42 seconds
 Aug 19 04:02:35 gateway.foo.bar 218965: Aug 19 04:02:33.266:
  %LINK-3-UPDOWN: Interface BRI0:1, changed state to down
 Aug 19 04:02:38 gateway.foo.bar 218966: Aug 19 04:02:36.103:
  %SEC-6-IPACCESSLOGP: list 102 denied tcp 100.198.139.148(4652) ->
  100.193.176.49(80), 1 packet
 Aug 19 04:02:45 gateway.foo.bar 218967: Aug 19 04:02:43.543:
  %ISDN-6-LAYER2DOWN: Layer 2 for Interface BR0, TEI 86 changed to down
 Aug 19 04:02:53 gateway.foo.bar 218968: Aug 19 04:02:51.471:
  %SEC-6-IPACCESSLOGP: list 102 denied tcp 100.74.103.1(2162) ->
  100.193.176.98(80), 1 packet
```

The outputted dlf files look like:

```
 994118619 permitted icmp 192.168.80.9 - Serial0/0.2 DLCI_120
  192.168.19.1 - 1
 994118619 permitted udp 192.168.19.1 138 Serial0/0.2 DLCI_120
  192.168.19.255 138 1
```

## EXAMPLES

To process a log as produced by Cisco IOS:

```
 $ cisco_ios2dlf < cisco.log
```

cisco\_ios2dlf will be rarely used on its own, but is more likely called by lr\_log2report:

```
 $ lr_log2report cisco_ios < /var/log/cisco.log
```

## AUTHORS

Francis J. Lacoste based on initial code by Joost Bekkers \<joost@jodocus.org\>

## VERSION

`$Id:` cisco\_ios2dlf.in,v 1.8 2006/07/23 13:16:35 vanbaal Exp $

## COPYRIGHT

Copyright (C) 2001 Joost Bekkers \<joost@jodocus.org\> Copyright (C) 2002 Stichting LogReport Foundation \<logreport@logreport.org\>

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program (see COPYING); if not, check with http://www.gnu.org/copyleft/gpl.html.