07-14-2010 03:51 AM - edited 03-04-2019 09:03 AM
I have a 2821 connected through a interface Dailer to one ISP which is operational. Through interface Fastethernet0/1/0 on a 2 port HWIC card, I require this to be connected to the second ISP. In the event of one link failing, I require the secondary link to take over. Very new to this and require assistance configuring fail over/load balancing on the 2821. The LAN side uses private IPs.
I'm guessing that a secondary default route will be required to the secondary ISP, but not sure how to configure it. Will a new access list be required? Any help will be greatly appreciated. Haven't done much to the config so far except put in the IP and description (hilighted in bold).
My current config through interface Dialer is as follows.
Current configuration : 18977 bytes
!
! Last configuration change at 14:36:51 GMT Tue Jul 13 2010 by admin
! NVRAM config last updated at 14:07:47 GMT Tue Jul 13 2010 by admin
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname gateway
!
boot-start-marker
boot-end-marker
!
logging buffered 4096
enable secret 5 $1$d1If$JX52cD9me5lGBMMG2C9id.
enable password hhhhhhh
!
no aaa new-model
clock timezone GMT 0
clock summer-time GMT recurring
network-clock-participate wic 3
dot11 syslog
!
!
ip cef
no ip dhcp use vrf connected
ip dhcp excluded-address 192.168.100.1 192.168.100.10
!
ip dhcp pool IPT
network 192.168.100.0 255.255.255.0
default-router 192.168.100.1
option 150 ip 192.168.100.1
lease infinite
!
!
ip domain name xxxxx.com
ip name-server 194.72.9.38
ip name-server 62.6.40.178
ip inspect name FW http
ip inspect name FW ftp
ip inspect name FW icmp
ip inspect name FW sip
ip inspect name FW dns
ip inspect name FW esmtp
ip inspect name FW https
ip inspect name FW imap
ip inspect name FW udp
ip inspect name FW tcp
!
multilink bundle-name authenticated
!
isdn switch-type basic-net3
!
!
trunk group 1
!
voice-card 0
no dspfarm
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
voice translation-rule 1
rule 1 /^/ /90/ type national national
rule 2 /^/ /900/ type international international
!
voice translation-rule 2
rule 1 /^890/ //
rule 2 /^308/ //
!
!
voice translation-profile INDDI
translate calling 1
translate called 2
!
!
!
crypto pki trustpoint TP-self-signed-3978284345
enrollment selfsigned
subject-name cn=IOS-Self-Signed-Certificate-3978284345
revocation-check none
rsakeypair TP-self-signed-3978284345
!
!
crypto pki certificate chain TP-self-signed-3978284345
certificate self-signed 01
3082024A 308201B3 A0030201 02020101 300D0609 2A864886 F70D0101 04050030
31312F30 2D060355 04031326 494F532D 53656C66 2D536967 6E65642D 43657274
69666963 6174652D 33393738 32383433 3435301E 170D3130 30323134 31353430
33345A17 0D323030 31303130 30303030 305A3031 312F302D 06035504 03132649
4F532D53 656C662D 5369676E 65642D43 65727469 66696361 74652D33 39373832
38343334 3530819F 300D0609 2A864886 F70D0101 01050003 818D0030 81890281
8100F47E 6CAC1FB3 D1D29090 20AAE798 28F1267F F3E3FFD8 920FD910 A877F20E
C1891B66 541DC6E6 63CF073B C328EC3F 96B9B401 BCB00E3B 683B9549 858BFFB5
C4555DB9 134E1E9A 741E28CA 59D75C17 E7D15C49 C6EDD714 E28E9DAD B358AC02
29328923 A3AE2137 5B6467E6 463D1F04 43C1AB15 B356224B A1D6A445 5D317929
E6B70203 010001A3 72307030 0F060355 1D130101 FF040530 030101FF 301D0603
551D1104 16301482 12676174 65776179 2E73756E 6B61722E 636F6D30 1F060355
1D230418 30168014 7A51CB11 C0D8BB34 DDC7159C F0C40188 BF32CF30 301D0603
551D0E04 1604147A 51CB11C0 D8BB34DD C7159CF0 C40188BF 32CF3030 0D06092A
864886F7 0D010104 05000381 81003A6E 3CA4A6D2 F63EED35 470E634F 2EF224C2
6F57D1EF B6342C3A 1033CF36 7FFCFAA5 7E8DFC10 75F69C8C C297CB84 03DBFBE4
90D06CF9 49A7DEFA 7634DE2C C376DFD3 AAB04F69 A1C2E766 32DD4596 EBE0CB22
76FC753C E87EC8D9 64D26D9E F81ABB7D F94C2FAC 9CE9E00C 4E92E476 97089440
0D0544F3 2CA347E6 00776A43 59BE
quit
!
!
username admin privilege 15 password 0 Sunkar2010
archive
log config
hidekeys
!
!
!
!
!
!
!
!
interface GigabitEthernet0/0
description ** Connection to DATA LAN **
ip address 192.168.0.254 255.255.255.0
ip nat inside
ip virtual-reassembly
duplex auto
speed auto
!
interface Service-Engine0/0
ip unnumbered GigabitEthernet0/1
service-module ip address 192.168.100.2 255.255.255.0
service-module ip default-gateway 192.168.100.1
!
interface GigabitEthernet0/1
description ** Connection to Voice LAN **$ES_LAN$
ip address 192.168.100.1 255.255.255.0
ip nat inside
ip virtual-reassembly
duplex auto
speed auto
h323-gateway voip interface
h323-gateway voip bind srcaddr 192.168.100.1
!
interface FastEthernet0/1/0
description secondary ISP link
ip address x.x.x.194 255.255.255.240
duplex auto
speed auto
!
interface FastEthernet0/1/1
no ip address
shutdown
duplex auto
speed auto
!
interface ATM0/2/0
no ip address
ip nat outside
ip virtual-reassembly
no atm ilmi-keepalive
dsl operating-mode auto
pvc 0/38
encapsulation aal5mux ppp dialer
dialer pool-member 1
!
!
interface BRI0/3/0
no ip address
isdn switch-type basic-net3
isdn point-to-point-setup
isdn incoming-voice voice
isdn static-tei 0
trunk-group 1
!
interface BRI0/3/1
no ip address
isdn switch-type basic-net3
isdn point-to-point-setup
isdn incoming-voice voice
isdn static-tei 0
trunk-group 1
!
interface Dialer1
ip address x.x.143.238 255.255.255.248
ip access-group INBOUND in
ip nat outside
ip inspect FW out
ip virtual-reassembly
encapsulation ppp
dialer pool 1
dialer-group 1
ppp chap hostname xxxxxxx@hg28.btclick.com
ppp chap password 0 xxxxxxx
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 Dialer1
ip route 192.168.100.2 255.255.255.255 Service-Engine0/0
!
!
ip http server
ip http secure-server
ip dns server
ip nat inside source list 1 interface Dialer1 overload
ip nat inside source static 192.168.0.1 217.39.143.233
!
ip access-list extended INBOUND
remark SDM_ACL Category=17
permit ip x.x.22.160 0.0.0.31 any
permit tcp any host xx.xx.143.233 eq 443
permit tcp any host xx.xx.143.233 eq 987
permit tcp any host xx.xx.143.233 eq 1723
permit tcp any host xx.xx.143.233 eq 3389
permit tcp any host xx.xx.143.233 eq www
permit tcp any host xx.xx.143.233 eq ftp
permit tcp any range ftp-data ftp host xx.xx 143.233 range ftp-data ftp
remark Secure FTP Data Range
permit tcp any range 49152 65535 host xx.xx.143.233 range 49152 65535 log
remark SSL Control ports
permit tcp any range 989 990 host xx.xx.143.238 range 989 990 log
deny ip any any
!
access-list 1 permit 192.168.0.0 0.0.0.255
dialer-list 1 protocol ip permit
!
!
!
!
!
tftp-server flash:P00307020200.bin
tftp-server flash:P00307020200.loads
tftp-server flash:P00307020200.sb2
tftp-server flash:P00307020200.sbn
tftp-server flash:P00403020214.bin
tftp-server flash:ATA030100SCCP040211A.zup
!
control-plane
!
!
!
voice-port 0/3/0
translation-profile incoming INDDI
compand-type a-law
cptone GB
!
voice-port 0/3/1
translation-profile incoming INDDI
compand-type a-law
cptone GB
!
!
!
!
dial-peer cor custom
name local/national
name International
name FreePhone
name Personal/pagers
name Mobile
name LocalRate
name NationalRate
name Premium
name NHS
name Operator
name DirectoryServices
name Voip
name Services
!
!
dial-peer cor list LocalNational
member local/national
!
dial-peer cor list Services
member Services
!
dial-peer cor list Voip
member Voip
!
dial-peer cor list International
member International
!
dial-peer cor list FreePhone
member FreePhone
!
dial-peer cor list PersonalPagers
member Personal/pagers
!
dial-peer cor list Mobile
member Mobile
!
dial-peer cor list LocalRate
member LocalRate
!
dial-peer cor list NationalRate
member NationalRate
!
dial-peer cor list Premium
member Premium
!
dial-peer cor list NHS
member NHS
!
dial-peer cor list Operator
member Operator
!
dial-peer cor list DirectoryServices
member DirectoryServices
!
dial-peer cor list Level0
!
dial-peer cor list Level4
member local/national
member International
member FreePhone
member Personal/pagers
member Mobile
member LocalRate
member NationalRate
member NHS
member Operator
member DirectoryServices
member Voip
member Services
!
dial-peer cor list Level3
member local/national
member International
member FreePhone
member Mobile
member LocalRate
member NationalRate
member NHS
!
dial-peer cor list Level2
member local/national
member International
member Mobile
!
dial-peer cor list Level1
member local/national
member Mobile
!
!
dial-peer voice 500 voip
description - Voicemail -
destination-pattern 500
session protocol sipv2
session target ipv4:192.168.100.2
dtmf-relay sip-notify
codec g711ulaw
no vad
!
dial-peer voice 501 voip
description - MWI on/off -
destination-pattern 50[1-2]...
session protocol sipv2
session target ipv4:192.168.100.2
dtmf-relay sip-notify
codec g711ulaw
no vad
!
dial-peer voice 1 pots
trunkgroup 1
incoming called-number .
direct-inward-dial
!
dial-peer voice 2 pots
trunkgroup 1
description - Emergency -
destination-pattern 999
forward-digits 3
!
dial-peer voice 3 pots
trunkgroup 1
description - Emergency -
destination-pattern 9112
forward-digits 3
!
dial-peer voice 4 pots
trunkgroup 1
corlist outgoing LocalNational
description - Local 8 -
destination-pattern 9[2-9].......
forward-digits 8
!
dial-peer voice 5 pots
trunkgroup 1
corlist outgoing Voip
description - VoIP -
destination-pattern 9056........
forward-digits 11
!
dial-peer voice 6 pots
trunkgroup 1
corlist outgoing LocalNational
description - National <11 -
preference 1
destination-pattern 90[1-2]T
forward-digits 10
!
dial-peer voice 7 pots
trunkgroup 1
corlist outgoing LocalNational
description - National -
destination-pattern 90[1-2].........
forward-digits 11
!
dial-peer voice 8 pots
trunkgroup 1
corlist outgoing International
description - International -
destination-pattern 900T
prefix 00
!
dial-peer voice 9 pots
trunkgroup 1
corlist outgoing Mobile
description - Mobile -
destination-pattern 907[5,7-9]........
forward-digits 11
!
dial-peer voice 10 pots
trunkgroup 1
corlist outgoing FreePhone
description - Freephone 0800 <11 -
preference 1
destination-pattern 9080T
forward-digits 10
!
dial-peer voice 11 pots
trunkgroup 1
corlist outgoing FreePhone
description - Freephone -
destination-pattern 9080........
forward-digits 11
!
dial-peer voice 12 pots
trunkgroup 1
corlist outgoing FreePhone
description - Free phone <11 -
preference 1
destination-pattern 9050T
forward-digits 10
!
dial-peer voice 13 pots
trunkgroup 1
corlist outgoing FreePhone
description - Free phone -
destination-pattern 9050........
forward-digits 11
!
dial-peer voice 14 pots
trunkgroup 1
corlist outgoing LocalRate
description - Reduced Rate -
destination-pattern 9084........
forward-digits 11
!
dial-peer voice 15 pots
trunkgroup 1
corlist outgoing NationalRate
description - National Rates -
destination-pattern 9087........
forward-digits 11
!
dial-peer voice 16 pots
trunkgroup 1
corlist outgoing Premium
description - Premium Rate <11 -
destination-pattern 9090T
forward-digits 10
!
dial-peer voice 17 pots
trunkgroup 1
corlist outgoing Premium
description - Premium Rate -
preference 1
destination-pattern 9090........
forward-digits 11
!
dial-peer voice 18 pots
trunkgroup 1
corlist outgoing Operator
description - Operator -
destination-pattern 9100
forward-digits 3
!
dial-peer voice 19 pots
trunkgroup 1
corlist outgoing DirectoryServices
description - Services -
destination-pattern 9118...
forward-digits 6
!
dial-peer voice 20 pots
trunkgroup 1
corlist outgoing Services
description - Services -
destination-pattern 9141T
prefix 141
!
dial-peer voice 21 pots
trunkgroup 1
corlist outgoing Services
description - Services -
destination-pattern 9147[1-9]
forward-digits 4
!
dial-peer voice 22 pots
trunkgroup 1
corlist outgoing NHS
description - NHS Direct -
destination-pattern
forward-digits 8
!
dial-peer voice 23 pots
trunkgroup 1
corlist outgoing NationalRate
description - Reduced Rate -
destination-pattern 9034........
forward-digits 11
!
dial-peer voice 24 pots
trunkgroup 1
corlist outgoing NationalRate
description - National Rates -
destination-pattern 9037........
forward-digits 11
!
dial-peer voice 25 pots
trunkgroup 1
corlist outgoing NationalRate
description - National Rates -
destination-pattern 9033........
forward-digits 11
!
dial-peer voice 26 pots
trunkgroup 1
corlist outgoing NationalRate
description - National Rates -
destination-pattern 9030........
forward-digits 11
!
dial-peer voice 27 pots
trunkgroup 1
corlist outgoing Services
description - Services -
destination-pattern 915[0-5]
forward-digits 3
!
dial-peer voice 28 pots
trunkgroup 1
corlist outgoing Services
description - Services -
destination-pattern 919.
forward-digits 3
!
!
!
!
telephony-service
load 7960-7940 P00307020200
max-ephones 30
max-dn 100
ip source-address 192.168.100.1 port 2000
system message xxxxxxxx plc
url services http://192.168.100.2/voiceview/common/login.do
url authentication http://192.168.100.1/CCMCIP/authenticate.asp
cnf-file location flash:
time-zone 21
time-format 24
date-format dd-mm-yy
voicemail 500
max-conferences 8 gain -6
call-forward pattern .T
moh music-on-hold.au
multicast moh 239.1.1.1 port 2000
web admin system name admin password xxxxxxxxx
dn-webedit
time-webedit
transfer-system full-consult
transfer-pattern .T
secondary-dialtone 9
directory entry 1
directory entry 2
directory entry 3
directory entry 4
create cnf-files version-stamp 7960 Feb 11 2010 09:03:29
!
!
ephone-template 20
softkeys idle Redial Gpickup Cfwdall Newcall Join ConfList RmLstC Login Dnd
!
!
ephone-dn 1 dual-line
call-waiting ring
number 180
pickup-group 1
label
description
name
call-forward busy 500
call-forward noan 500 timeout 25
corlist incoming Level4
huntstop channel
no huntstop
!
!
ephone-dn 2 dual-line
call-waiting ring
number 181
pickup-group 1
label
description
name
call-forward busy 500
call-forward noan 500 timeout 25
corlist incoming Level4
huntstop channel
no huntstop
!
!
ephone-dn 3 dual-line
call-waiting ring
number 182
pickup-group 1
label
description
name
call-forward busy 500
call-forward noan 500 timeout 25
corlist incoming Level4
huntstop channel
no huntstop
!
!
ephone-dn 4 dual-line
call-waiting ring
number 183
pickup-group 1
label
description
name
call-forward busy 500
call-forward noan 500 timeout 25
corlist incoming Level4
huntstop channel
no huntstop
!
!
ephone-dn 5 dual-line
call-waiting ring
number 184
pickup-group 1
label Conference
description
name Conference
corlist incoming Level4
huntstop channel
no huntstop
!
!
ephone-dn 6 dual-line
call-waiting ring
number 185
pickup-group 1
label Spare
description
name Spare
call-forward busy 500
call-forward noan 500 timeout 25
corlist incoming Level4
huntstop channel
no huntstop
!
!
ephone-dn 7 dual-line
call-waiting ring
number 186
pickup-group 1
label Spare
description
name Spare
call-forward busy 500
call-forward noan 500 timeout 25
corlist incoming Level4
huntstop channel
no huntstop
!
!
ephone-dn 8 dual-line
call-waiting ring
number 187
pickup-group 1
label
description
name
call-forward busy 500
call-forward noan 500 timeout 25
corlist incoming Level4
huntstop channel
no huntstop
!
!
ephone-dn 9 dual-line
call-waiting ring
number 188
pickup-group 1
label
description
name
call-forward busy 500
call-forward noan 500 timeout 25
corlist incoming Level4
huntstop channel
no huntstop
!
!
ephone-dn 10 dual-line
call-waiting ring
number 189
pickup-group 1
label
description
name
call-forward all
call-forward busy 500
call-forward noan 500 timeout 25
corlist incoming Level4
huntstop channel
no huntstop
!
!
ephone-dn 11 dual-line
call-waiting ring
number 190
pickup-group 1
label
description
name
call-forward busy 500
call-forward noan 500 timeout 25
corlist incoming Level4
huntstop channel
no huntstop
!
!
ephone-dn 12 dual-line
call-waiting ring
number 678
pickup-group 1
label Main Number
description
name Main Number
call-forward busy 500
call-forward noan 500 timeout 25
corlist incoming Level4
huntstop channel
no huntstop
!
!
ephone-dn 13
number 199
label Fax
description
name Fax
no huntstop
hold-alert 30 originator
!
!
ephone-dn 99
number 501...
mwi on
!
!
ephone-dn 100
number 502...
mwi off
!
!
ephone 1
device-security-mode none
mac-address 0023.EBC6.D625
ephone-template 20
username "SerikU" password 180
type 7940
button 1:1
!
!
!
ephone 2
device-security-mode none
mac-address 0023.EBC6.DA85
ephone-template 20
username "jkkjkkjkjk" password
type 7940
button 1:2
!
!
!
ephone 3
device-security-mode none
mac-address 0023.EBC6.CFC2
ephone-template 20
username "N" password
type 7940
button 1:3
!
!
!
ephone 4
device-security-mode none
mac-address 0023.EBC6.D0B1
ephone-template 20
username ""
type 7940
button 1:12 2:4
!
!
!
ephone 5
device-security-mode none
mac-address 0026.0B5C.EDD1
type ata
button 1:5
!
!
!
ephone 6
device-security-mode none
mac-address 0023.EBC6.DB1D
ephone-template 20
username "User1"
type 7940
button 1:6
!
!
!
ephone 7
device-security-mode none
mac-address 0023.EBC6.D235
ephone-template 20
username "User2"
type 7940
button 1:7
!
!
!
ephone 8
device-security-mode none
mac-address 0023.EBC6.D371
ephone-template 20
username "TM" password
fastdial 1 9 name mob
speed-dial 1 "
type 7940
button 1:8
!
!
!
ephone 9
device-security-mode none
mac-address 0023.EBC6.D54A
ephone-template 20
username "TeckSK" password 188
type 7940
button 1:9
!
!
!
ephone 10
device-security-mode none
mac-address 0023.EBC6.D352
ephone-template 20
username "AH" password 1
type 7940
button 1:10
!
!
!
ephone 11
device-security-mode none
mac-address 0023.EBC6.D33B
ephone-template 20
username "RW" password 1
type 7940
button 1:11
!
!
!
ephone 12
device-security-mode none
mac-address 260B.5CED.D101
type ata
button 1:13
!
!
!
ephone 13
device-security-mode none
!
!
!
line con 0
line aux 0
line 194
no activation-character
no exec
transport preferred none
transport input all
transport output pad telnet rlogin lapb-ta mop udptn v120 ssh
line vty 0 4
password cisco
login local
transport input telnet ssh
!
scheduler allocate 20000 1000
ntp source GigabitEthernet0/1
ntp master 1
!
!
webvpn context Default_context
ssl authenticate verify all
!
no inservice
!
end
07-14-2010 04:35 AM
I have a 2821 connected through a interface Dailer to one ISP which is operational. Through interface Fastethernet0/1/0 on a 2 port HWIC card, I require this to be connected to the second ISP. In the event of one link failing, I require the secondary link to take over. Very new to this and require assistance configuring fail over/load balancing on the 2821. The LAN side uses private IPs.
I'm guessing that a secondary default route will be required to the secondary ISP, but not sure how to configure it. Will a new access list be required? Any help will be greatly appreciated. Haven't done much to the config so far except put in the IP and description (hilighted in bold).
My current config through interface Dialer is as follows.
Current configuration : 18977 bytes
!
! Last configuration change at 14:36:51 GMT Tue Jul 13 2010 by admin
! NVRAM config last updated at 14:07:47 GMT Tue Jul 13 2010 by admin
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname gateway
!
boot-start-marker
boot-end-marker
!
logging buffered 4096
enable secret 5 $1$d1If$JX52cD9me5lGBMMG2C9id.
enable password hhhhhhh
!
no aaa new-model
clock timezone GMT 0
clock summer-time GMT recurring
network-clock-participate wic 3
dot11 syslog
!
!
ip cef
Hi,
What i would suggest configure ip sla track with dyanmic failover to secondary link in case primary goes down ,check out the below sample configuration on IP SLA
ip sla 1 < The number 1 here is arbitrary, used only to identify this sla. It is otherwise knows as the operation number>
icmp-echo "Any Ip address" < Ip address that responds to pings out on the internet>
timeout 500 < This is how long to wait for a response from the ping>
frequency 3 < This is the repeat rate for the SLA>
ip sla schedule 1 start-time now life forever < This command says "start SLA 1 now and keep it running forever>
track 1 rtr 1 reachability < This comand creates the track object "1" and monitors the SLA 1>
Now for the routing, we need to change the default route and associate it with the tracker
and then put it back with the tracking
ip route 0.0.0.0 0.0.0.0 1.1.1.1 track 1
Then we need to add our secondary route
ip route 0.0.0.0 0.0.0.0 1.1.1.2 10
Now when the ping to"Any Ip address" fails the primary route is removed and the secondary route with the higher metric becomes the default. The route will be reinstated when the connectivity is restored.
Hope to Help !!
Ganesh.H
Remember to rate the helpful post
07-14-2010 06:33 AM
Hi Ganesh,
Thank you for your reply. I don't have access to the 2821 right now, but have a few questions.
1. Do I need to take out any lines from my current config, add any access lists or anything else apart from adding the IP SLA commands?
2. Before adding the 2 new defaults routes
ip route 0.0.0.0 0.0.0.0 1.1.1.1 track 1
ip route 0.0.0.0 0.0.0.0 1.1.1.2 10
Do I delete the old route by doing 'no ip route 0.0.0.0 0.0.0.0 Dialer1'? Am I correct in assuming that 1.1.1.1 is the gateway of the 1st ISP and will still go through Dialer1?
Regards,
Rob
07-14-2010 06:43 AM
Hi Rob,
I have suggested the configuration from link failover point of view and
yes you are right first remove the existing and need to change the
default route and associate it with the tracker
no ip route 0.0.0.0 0.0.0.0 1.1.1.1 -- Old default route
and then put it back with the tracking
ip route 0.0.0.0 0.0.0.0 1.1.1.1 track 1 -- New default route
1.1.1.1 is example ip which is your primary isp dailer inetrface facing.
Hope to help !!
Ganesh.H
Remember to rate the helpful post
=====
07-14-2010 06:53 AM
Hi Ganesh,
So, for the new default route, do I type 'ip route 0.0.0.0 0.0.0.0 Dialer1 track 1' or replace Dialer1 with an actual IP?
Best,
Rob
07-14-2010 10:10 PM
Dear Ganesh,
It is right the change over will work if gateway is down.
But sometimes it's happened that Gateway is working than also Internet is not working due to some other fault on ISP site e.g DNS is down. Than how can we should proceed ?
Pls suggest.
07-16-2010 12:10 AM
Dear Ganesh,
It is right the change over will work if gateway is down.
But sometimes it's happened that Gateway is working than also Internet is not working due to some other fault on ISP site e.g DNS is down. Than how can we should proceed ?
Pls suggest.
Hi Dipesh,
That why i have asked to ping an ip address in internet if the ping to that ip address is not responding then secondary link will become active and routes will diverted through secondary ISP.
Hope to Help !!
Ganesh.H
Remember to rate the helpful post
07-20-2010 09:40 AM
Hi, Ganesh,
That is right.
But sometimes Internet gateway is up and pinging successfully than also internet is not working.
In this case how can we track?
Pls suggest.
07-16-2010 12:12 AM
Hi Ganesh,
So, for the new default route, do I type 'ip route 0.0.0.0 0.0.0.0 Dialer1 track 1' or replace Dialer1 with an actual IP?
Best,
Rob
Hi Rob,
It's up to you how to configure the route but i would suggest to point to with destiona ip address.
Hope to Help !!
Ganesh.H
Remember to rate the helpful post
07-21-2010 02:07 AM
Hi Ganesh,
Unfortunately it did not work with the config. I will try again by replacing Dialer1 with the actual IP address. Looking at the rest of the config for this to work, is anything else needed?
Best,
Rob
07-14-2010 08:26 AM
Hi Ganesh,
What about the DNS servers from the second ISP, do they need to be entered too? I have the DNS servers from the 1st ISP in at the moment (although I'm unable to ping via IP or domain name).
Regards,
Rob
07-14-2010 10:38 PM
hi,
The reason why ganesh had asked you to configure IP SLA is, because your isp mode of delivery is Fast ethernet.. normally ethernet interface will not put down its carrier signal down so your normal default route pointing to this isp will not be automatically removed from your routing table. so IP SLA is for just to have a failover , if you are looking out for load balancing kindly check this link...
http://www.cisco.com/en/US/tech/tk648/tk361/technologies_configuration_example09186a00808d2b72.shtml
Hope this will help you in resolving this issue...
Regards,
Hariharan k
07-15-2010 03:51 AM
Hi Hariharan,
Thanks for your input, but not exactly sure what you were responding to here? I understood why Ganesh suggested the IP SLA configuration so that's not a problem.
Best,
Rob
07-20-2010 01:36 PM
hello,
I have tried with ip sla that monitors the response time of a HTTP GET, since a ping could always be answered by the next hop, a dns server or any other device on the Internet but does not guarantee me "Internet service" , Web browsing.
I use the following:
!
track 100 ip sla 4900
delay down 10 up 10
!
ip sla 4900
http get http://www.av.com source-ip 190.202.86.125 name-server 200.44.32.12
timeout 7000
!
ip route 0.0.0.0 0.0.0.0 x.x.x.x track 100
ip route 0.0.0.0 0.0.0.0 10.0.0.3 10 (float route)
!
I hope it will be useful
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