Question

Having trouble with Route mapping using Cisco 2800 and multiple ISP connections

Asked by: richdwa

I am trying to setup Route maps so I can send web/ftp traffic out one interface and all other traffic out the other. A bonus answer would also allow the second connection to serve up the web/ftp traffic in the event the first one goes down.
Maximum points available for this one!!!

!
hostname ROUTER
!
boot-start-marker
boot-end-marker
!
card type t1 0 0
logging buffered 51200 warnings
enable secret 5 (encrypted)
!
aaa new-model
!
!
aaa group server radius sdm-vpn-server-group-1
 server 10.25.0.227 auth-port 1645 acct-port 1646
 server 10.25.0.215 auth-port 1645 acct-port 1646
!
aaa authentication login userauthen group radius local
aaa authentication login vlst-remote local
aaa authentication login CUSTAuthList group radius local
aaa authentication login sdm_vpn_xauth_ml_1 group sdm-vpn-server-group-1 local
aaa authorization network CUSTAuthList local 
aaa authorization network groupauthor local 
aaa authorization network sdm_vpn_group_ml_1 group sdm-vpn-server-group-1 local 
!
aaa session-id common
!
resource policy
!
clock timezone PST -8
clock summer-time PDT recurring
!
!
ip cef
!
!
no ip domain lookup
ip domain name cust.loc
ip ssh source-interface Loopback1
ip ssh rsa keypair-name ROUTER.cust.loc
ip ssh logging events
ip ssh version 2
ip inspect name DEFAULT100 netbios-ssn
ip inspect name CUST-FW http
ip inspect name CUST-FW ftp
ip inspect name CUST-FW tcp
ip inspect name CUST-FW udp
!
!
!
voice-card 0
 no dspfarm
 
controller T1 0/0/0
 framing esf
 fdl both
 clock source line independent
 linecode b8zs
 channel-group 0 timeslots 1-24
 detect v54 channel-group 0
!
controller T1 0/0/1
 framing esf
 fdl both
 clock source line independent
 linecode b8zs
 channel-group 0 timeslots 1-24
 detect v54 channel-group 0
! 
!
crypto isakmp policy 3
 encr 3des
 authentication pre-share
 group 2
!
crypto isakmp client configuration group 3000client
 key cisco123
 dns 10.25.0.215 10.25.0.227
 wins 10.25.0.215 10.25.0.227
 domain cust.loc
 pool ippool
 acl 103
crypto isakmp profile sdm-ike-profile-1
   match identity group custvpn
   match identity group 3000client
   client authentication list sdm_vpn_xauth_ml_1
   isakmp authorization list sdm_vpn_group_ml_1
   client configuration address respond
   virtual-template 1
!
!
crypto ipsec transform-set myset esp-3des esp-sha-hmac 
crypto ipsec transform-set ESP-3DES-SHA esp-3des esp-sha-hmac 
!
crypto ipsec profile SDM_Profile1
 set transform-set ESP-3DES-SHA 
 set isakmp-profile sdm-ike-profile-1
!
!
crypto dynamic-map dynmap 10
 set transform-set myset 
!
!
crypto map clientmap client authentication list userauthen
crypto map clientmap isakmp authorization list groupauthor
crypto map clientmap client configuration address respond
crypto map clientmap 10 ipsec-isakmp dynamic dynmap 
!
!
!
interface Loopback1
 ip address x.x.x.225 255.255.255.224
 ip nat outside
 ip virtual-reassembly
 no ip route-cache cef
 no ip route-cache
 no ip mroute-cache
!
interface Multilink1
 description Connection to Internet for all except web and ftp
 ip address x.x.x.130 255.255.255.252
 ip nat outside
 ip inspect CUST-FW out
 ip virtual-reassembly
 ppp multilink
 ppp multilink interleave
 ppp multilink group 1
 ppp multilink fragment delay 50
 crypto map clientmap
!
interface GigabitEthernet0/0
 description CUST Internal LAN
 ip address 10.25.0.1 255.255.255.0
 ip nat inside
 ip virtual-reassembly
 ip policy route-map traffic-split
 duplex auto
 speed auto
!
interface GigabitEthernet0/1
 description Cable Internet for web and ftp only
 ip address x.x.x.45 255.255.255.252
 ip nat outside
 ip virtual-reassembly
 duplex auto
 speed auto
!
interface FastEthernet0/1/0
!
interface FastEthernet0/1/1
!
interface FastEthernet0/1/2
!
interface FastEthernet0/1/3
!
interface Serial0/0/0:0
 description CUST T-1 on port 0
 no ip address
 encapsulation ppp
 ppp multilink
 ppp multilink group 1
!
interface Serial0/0/1:0
 description CUST T-1 on port 1
 no ip address
 encapsulation ppp
 ppp multilink
 ppp multilink group 1
!
interface Virtual-Template1 type tunnel
 ip unnumbered Multilink1
 tunnel mode ipsec ipv4
 tunnel protection ipsec profile SDM_Profile1
!
interface Vlan1
 no ip address
 shutdown
!
ip local pool ippool 10.25.1.100 10.25.1.150
ip route 0.0.0.0 0.0.0.0 x.x.x.129
ip route 0.0.0.0 0.0.0.0 x.x.x.46
!
!
no ip http server
ip http authentication local
ip http secure-server
ip http timeout-policy idle 5 life 86400 requests 10000
ip nat inside source route-map SDM_RMAP_1 interface Multilink1 overload
ip nat inside source static 10.25.0.204 x.x.x.230 route-map SDM_RMAP_3
ip nat inside source static 10.25.0.226 x.x.x.231 route-map SDM_RMAP_2
!
ip radius source-interface GigabitEthernet0/0 
access-list 50 permit 10.25.0.0 0.0.0.255
access-list 100 remark SDM_ACL Category=4
access-list 100 permit ip 10.25.0.0 0.0.255.255 any
access-list 101 permit ip 10.25.0.0 0.0.0.255 any
access-list 103 permit ip 10.25.0.0 0.0.255.255 any
access-list 105 permit ip host 10.25.0.204 any
access-list 108 permit tcp any any eq www
access-list 108 permit tcp any any eq 443
access-list 108 permit tcp any any eq ftp
access-list 109 permit tcp any any
access-list 111 permit udp any host 12.90.194.130 eq non500-isakmp
access-list 111 permit udp any host 12.90.194.130 eq isakmp
access-list 111 permit esp any host 12.90.194.130
access-list 111 permit tcp any host 12.173.184.230 eq smtp
access-list 111 permit tcp any host 12.173.184.230 eq 443
access-list 111 permit tcp any host 12.173.184.231 eq domain
access-list 111 permit udp any host 12.173.184.231 eq domain
access-list 111 permit icmp any any
access-list 111 permit ip any host 12.173.184.225
!
!
!
route-map traffic-split permit 10
 match ip address 108
 set interface GigabitEthernet0/1
!
route-map traffic-split permit 20
 match ip address 109
 set interface Multilink1
!
route-map SDM_RMAP_1 permit 1
 match ip address 101
!
route-map SDM_RMAP_2 permit 1
 match ip address 104
!
route-map SDM_RMAP_3 permit 1
 match ip address 105
!
!
!
radius-server host 10.25.0.215 auth-port 1645 acct-port 1646 key (hidden)
radius-server host 10.25.0.227 auth-port 1645 acct-port 1646 key (hidden)
!
control-plane
!
!
line con 0
line aux 0
line vty 0 4
 transport input telnet ssh
line vty 5 15
 transport input telnet ssh
!
scheduler allocate 20000 1000
ntp broadcastdelay 10
ntp clock-period 17180279
ntp source GigabitEthernet0/1
ntp master 3
ntp update-calendar
ntp peer 128.9.176.20
ntp server 128.9.176.30 source GigabitEthernet0/1 prefer
ntp server 128.9.176.30 source Multilink1 prefer
ntp peer 69.36.224.15 prefer
ntp peer 128.2.1.21 prefer
!
end

                                  
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Asked On
2009-08-30 at 10:39:40ID24693323
Tags

Route Map

,

Cisco router

,

routing

,

multiple connections

Topics

Network Routers

,

Miscellaneous Networking

,

TCP/IP

Participating Experts
2
Points
500
Comments
17

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Answers

 

by: ikalmarPosted on 2009-08-30 at 11:08:50ID: 25218548

 

by: richdwaPosted on 2009-08-30 at 11:24:46ID: 25218602

Ok, I have tried ip sla reaction-configuration 1 react timeout and get %Entry not configured, so I assume there is an entry somewhere else I need to setup- but not sure what that is- can you please elaborate?

Thanks.

 

by: richdwaPosted on 2009-08-30 at 13:43:43ID: 25219246

Ok, I'm trying to integrate the examples into my config but it's a little ambiguous... any chance you can be more specific about how to integrate the changes i need for sending the web traffic to the cable and the rest to the other Internet connection?

Appreciate it, been a little frustrating...

Rich

 

by: rochey2009Posted on 2009-09-04 at 17:55:58ID: 25264480

Hi,

I don't think set interface can be used with a broadcast interface such as Gigabit Ethernet. Have you tried using the following in your route-map instead of set interface:

 set ip next-hop <next hop ip address>

 

by: ikalmarPosted on 2009-09-05 at 01:42:58ID: 25265372

As rochey said the nex-hop os much more better tha define an output interface

 

by: rochey2009Posted on 2009-09-05 at 08:31:43ID: 25266553

Hi,

In addition to my previous post the following link will help you with the bonus part of your question.

http://www.cisco.com/en/US/docs/ios/12_3t/12_3t4/feature/guide/gtpbrtrk.html#wp1053205

It's a good document with some examples.

You'll have to check the version of your IOS to make sure you can use the object tracking methods described.

There are two methods described and this also depends on your IOS version.
Both methods are more or less the same with some slight changes in syntax. One uses the older RTR method and the newer one uses the IP SLA MONITOR. The sub commands are the same in both cases.

The basic steps are as follows. (Have a look at the above link for the detailed steps.)

You create an Service Assurance Agent (SAA) with the RTR or IP SLA MONITOR configuration command. This pings the remote router to check its availability. You scedule it to run all of the time.
You create a track object and link it to the SAA. In your route-map you can set the next hop and verify its availability by linking it to the track object with the following command:

set ip next-hop verify-availability [next-hop-address sequence track object]

 

by: richdwaPosted on 2009-09-05 at 10:11:19ID: 25266955

OK, attempting all this this AM, will report back. Thanks

 

by: rochey2009Posted on 2009-09-05 at 11:15:02ID: 25267179

One more thing. You only need to define the traffic for Http, Https and FTP in your route-map i.e. the traffic you want to policy route. You don't need to policy route the traffic towards your multilink (sequence 20 of your route-map). If traffic doesn't meet the statements in your route-map then the router will route  this traffic using the routing table as normal. i.e. it's a fallback, if traffic isn't permitted with the route-map then it'll route it using destination IP address as normal. You should remove the following default route towards GigabitEthernet0/1

no ip route 0.0.0.0 0.0.0.0 x.x.x.46

but keep the other default route towards the multilink

ip route 0.0.0.0 0.0.0.0 x.x.x.129

Regards,
Paul.

 

by: richdwaPosted on 2009-09-05 at 12:30:44ID: 25267419

Thanks Paul. I've made the changes you've suggested but for some reason I have yet to ascertain the web traffic still insists on going out the Multilink. Here's the relevant sections:


version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname CUST-ROUTER
!
controller T1 0/0/0
 framing esf
 fdl both
 clock source line independent
 linecode b8zs
 channel-group 0 timeslots 1-24
 detect v54 channel-group 0
!
controller T1 0/0/1
 framing esf
 fdl both
 clock source line independent
 linecode b8zs
 channel-group 0 timeslots 1-24
 detect v54 channel-group 0
! 
!
crypto isakmp policy 3
 encr 3des
 authentication pre-share
 group 2
!
!
interface Multilink1
 description 3MB ISP Connection to Internet
 ip address x.x.x.130 255.255.255.252
 ip nat outside
 ip inspect CUST-FW out
 ip virtual-reassembly
 ppp multilink
 ppp multilink interleave
 ppp multilink group 1
 ppp multilink fragment delay 50
 crypto map clientmap
!
interface GigabitEthernet0/0
 description CUST Internal LAN
 ip address 10.25.0.1 255.255.255.0
 ip nat inside
 ip virtual-reassembly
 duplex auto
 speed auto
!
interface GigabitEthernet0/1
 description Cable Internet
 ip address x.x.x.45 255.255.255.252
 ip nat outside
 ip virtual-reassembly
 duplex auto
 speed auto
!
interface Serial0/0/0:0
 description CUST T-1 on port 0 
 no ip address
 encapsulation ppp
 ppp multilink
 ppp multilink group 1
!
interface Serial0/0/1:0
 description CUST T-1 on port 1 
 no ip address
 encapsulation ppp
 ppp multilink
 ppp multilink group 1
!
interface Virtual-Template1 type tunnel
 ip unnumbered Multilink1
 tunnel mode ipsec ipv4
 tunnel protection ipsec profile SDM_Profile1
!
interface Vlan1
 no ip address
 shutdown
!
ip local pool ippool 10.25.1.100 10.25.1.150
ip route 0.0.0.0 0.0.0.0 x.x.x.129
!
!
ip nat inside source route-map SDM_RMAP_1 interface Multilink1 overload
ip nat inside source static 10.25.0.204 x.x.x.230 <----- Mail server
ip nat inside source static 10.25.0.226 x.x.x.231 route-map SDM_RMAP_2 <------- external dns server
!
ip radius source-interface GigabitEthernet0/0 
access-list 50 permit 10.25.0.0 0.0.0.255
access-list 100 remark SDM_ACL Category=4
access-list 100 permit ip 10.25.0.0 0.0.255.255 any
access-list 101 permit ip 10.25.0.0 0.0.0.255 any
access-list 103 permit ip 10.25.0.0 0.0.255.255 any
access-list 105 permit ip host 10.25.0.204 any
access-list 109 permit tcp any any
access-list 110 permit tcp any any eq www
access-list 110 permit tcp any any eq 443
access-list 110 permit tcp any any eq ftp
access-list 110 permit tcp any any eq ftp-data
access-list 111 permit udp any host x.x.x.130 eq non500-isakmp
access-list 111 permit udp any host x.x.x.130 eq isakmp
access-list 111 permit esp any host x.x.x.130
access-list 111 permit tcp any host x.x.x.230 eq smtp
access-list 111 permit tcp any host x.x.x.230 eq 443
access-list 111 permit tcp any host x.x.x.231 eq domain
access-list 111 permit udp any host x.x.x.231 eq domain
access-list 111 permit icmp any any
access-list 111 permit ip any host x.x.x.225
access-list 111 permit ahp any host x.x.x.130
!
!
route-map web-only permit 1
 match ip address 110
 set ip next-hop x.x.x.46
!
route-map SDM_RMAP_1 permit 1
 match ip address 101
!
route-map SDM_RMAP_2 permit 1
 match ip address 104
!
route-map SDM_RMAP_3 permit 1
 match ip address 105
!
!
control-plane
!end

                                              
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by: rochey2009Posted on 2009-09-05 at 16:24:54ID: 25268195

Hi,

The "ip policy route-map web-only" is missing from the GigabitEthernet0/0 interface.

Regards,
Paul.

 

by: rochey2009Posted on 2009-09-05 at 16:42:22ID: 25268232

Hi

I think there maybe an issue with the NAT also because you've got two outside interfaces with only one NAT configuration.

I think you need

ip nat inside source route-map SDM_RMAP_1 interface Multilink1 overload
ip nat inside source route-map SDM_RMAP_4 interface GigabitEthernet0/1 overload

you also need an additional route-map SDM_RMAP_4 to cover the GigabitEthernet0/1 NAT overload.
You'll also need the match interface statements in each route-map as follows:

route-map SDM_RMAP_1 permit 1
 match ip address 101
 match interface Multilink1

route-map SDM_RMAP_4 permit 1
 match ip address 101
 match interface GigabitEthernet0/1

http://www.cisco.com/en/US/tech/tk648/tk361/technologies_configuration_example09186a0080950834.shtml

 

by: richdwaPosted on 2009-09-05 at 17:04:57ID: 25268284

Ok- tried the first one (adding the web-only to Gig 0/0) and lost ability to surf the internet at all. Then saw the second comment and tried that- couldn't add the "ip nat inside source route-map SDM_RMAP_4 interface GigabitEthernet0/1 overload" as it told me "dynamic mapping already in use". The lost connection to my ssh connection and then afterward my vpn dropped as well- fortunately I had used a "reload in 5" command so now waiting for it come back up.

Rich

 

by: rochey2009Posted on 2009-09-05 at 17:09:18ID: 25268301

It maybe because there are translations in place
try and clear the translations before applying

clear ip nat translation *

Paul.

 

by: rochey2009Posted on 2009-09-05 at 17:12:48ID: 25268307

You'll need to do both the policy route-map and the and the additional NAT configuration.

 

by: richdwaPosted on 2009-09-05 at 17:28:17ID: 31622263

Awesome!!!

 

by: rochey2009Posted on 2009-09-05 at 17:40:30ID: 25268388

Thanks. I'm glad it worked.

Kind Regards,
Paul.

20120131-EE-VQP-002

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