Dear All,
Config file of the GRE tunnel router is attached in the mail. This router is
currently online with the customer.
Please assist.
Mohamed Sangey
Chief Technical Officer (CTO)
Tel Office: (+255) 22 - 213 70 30
Support 24/7: (+255) 22 - 550 72 00
Fax: (+255) 22 - 213 92 22
Mobile: (+255) 797 - 200020
Calling from the U.S: 212-372-7219
Calling from Israel: 057-6666555 ext. 4971
Email: [email protected] / www.tansat.com
MSN : [email protected]
-----Original Message-----
From: [email protected] [mailto:[email protected]]
On Behalf Of Jay Hennigan
Sent: Monday, November 02, 2009 9:59 PM
Cc: [email protected]
Subject: Re: [mrtg] GRE Tunnel mrtg traffic
Mohamed Sangey wrote:
> I have configured GRE Tunnel for my customer. Also created MRTG graph
> for it, but it misbehaves. I have fired mrtg config file for internet
> traffic, which reflect normal. Only problem is that traffic which shows
> VPN utilization.
A couple of things: As others have suggested, verify the interface
number is correct for the tunnel. Usually an snmpwalk of the interfaces
tree will give you the interface number.
Once you've done this, configure the router for persistent interface IDs
so they don't get scrambled during a reboot.
In global configuration mode, enter:
snmp-server ifindex persist
Also beware that tunnel interfaces have a default bandwidth of 9Kbits/s.
You'll want to set that to something sane, probably the bandwidth of
the underlying physical interface over which the tunneled traffic flows.
In interface configuration mode on the tunnel interface:
bandwidth 1536 (assuming a T1 physical path)
--
Jay Hennigan - CCIE #7880 - Network Engineering - [email protected]
Impulse Internet Service - http://www.impulse.net/
Your local telephone and internet company - 805 884-6323 - WB6RDV
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BankM_DR#show run
Building configuration...
Current configuration : 1432 bytes
!
version 12.4
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname BankM_DR
!
boot-start-marker
boot-end-marker
!
no aaa new-model
!
!
dot11 syslog
ip cef
!
!
!
!
!
!
!
archive
log config
hidekeys
!
!
!
!
!
interface Tunnel1
description <<< From BankM_Dr to HQ >>>
ip address 10.10.10.2 255.255.255.252
tunnel source 41.222.31.236
tunnel destination 41.222.31.18
!
interface FastEthernet0
!
interface FastEthernet1
!
interface FastEthernet2
!
interface FastEthernet3
!
interface FastEthernet4
description *** LAN ***
ip address 41.222.31.236 255.255.255.192
ip nat outside
ip virtual-reassembly
speed 100
full-duplex
!
interface Vlan1
description *** WAN ***
ip address 192.168.2.101 255.255.255.0
ip nat inside
ip virtual-reassembly
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 41.222.31.193
ip route 192.168.1.0 255.255.255.0 Tunnel1
!
no ip http server
no ip http secure-server
ip nat inside source list 101 interface FastEthernet4 overload
!
access-list 101 deny ip 192.168.2.0 0.0.0.255 192.168.1.0 0.0.0.255
access-list 101 permit ip 192.168.2.0 0.0.0.255 any
snmp-server community bankm RW
!
!
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