C876 route-map smtp traffic to one ISP, can you check my config for faults?|
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Posted by Steven V.A on April 29, 2008, 8:55 am
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I' am setting up a Cisco 876 ISDN ADSL router. The company has two broadband connections: one ISDN over ADSL (currenty by the 876) and one, on an Ethenet cable modem. I have read that I can use Cisco's 876 ISDN BRI port as wan port for the cable modem. So effectiffly load balancing between the two ISP's I did some homework and made a config to balance between the thow ISP's. Can you check my config for errors? Before I load this in the 876. I used the template from: http://www.cisco.com/en/US/tech/tk648/tk361/technologies_configuration_example09186a00808d2b72.shtml However there is one thing I coulden't find nicely explaind: I want ALL smtp traffic routed trough ISP 2. How can I do that? I tried route maps, but I have no idea if I'm doeing thing right. Can you help me with that? Many thanks in advance. picure of the 876: http://www.cisco.com/en/US/i/100001-200000/120001-130000/122001-123000/122243.jpg Config starts: resource policy ! clock timezone BXL 1 ip subnet-zero ip cef ! ! OpenDNS server om dns queries nog te versnellen. ! ip name-server 208.67.222.222 ip name-server 208.67.220.220 !! ! Het Dual Wan gedeelte begint hieronder. ! ! track timer interface 5 ! ! Configure timers on route tracking ! track 123 rtr 1 reachability delay down 15 up 10 ! track 345 rtr 2 reachability delay down 15 up 10 ! ! Use “ip dhcp client route track [number]” ! to monitor route on DHCP interfaces ! Define ISP-facing interfaces with “ip nat outside” ! ! Deze interface hieronder hangt aan de telenet kabelmodem ! This is the iface to the cable modem interface BRI0 ip address dhcp ip dhcp client route track 345 ip nat outside ip virtual-reassembly mac-address 0050.BFB7.772C ! ! interface FastEthernet0 ! interface FastEthernet1 ! interface FastEthernet2 ! interface FastEthernet3 ! ! ! Define LAN-facing interfaces with “ip nat inside” ! This is the Lan iface ! interface Vlan1 description LAN Interface ip address 192.168.0.254 255.255.255.0 ip nat inside ip virtual-reassembly ip tcp adjust-mss 1452 ! ! Define ISP-facing interfaces with “ip nat outside” ! this is the ADSL line to Skynet ! interface ATM0 description *** DSL line *** ip address ****snip******** 255.255.255.192 ip nat outside ip virtual-reassembly no atm ilmi-keepalive pvc 0/35 protocol ip *snip******* broadcast encapsulation aal5snap dsl operating-mode auto ! ip route 0.0.0.0 0.0.0.0 ATM0 track 123 ! ! Configure NAT overload (PAT) to use route-maps ! ip nat inside source route-map fixed-nat interface ATM0 overload ip nat inside source route-map dhcp-nat interface BRI0 overload ! ! Configure an OER tracking entry ! om de eerste verbinding van de ADSL i-line te monitoren, ATM0 ! We doen dit door af en toe de DNS van Skynet te pingen. ! ip sla 1 icmp-echo 195.238.2.21 source-interface ATM0 timeout 1000 threshold 40 frequency 3 ! ! Configure a second OER tracking entry ! Monitoren van de Telenet verbinding. BRI0 ! Hierbij pingen we de DNS van Telenet ! ip sla 2 icmp-echo 195.130.130.11 source-interface BRI0 timeout 1000 threshold 40 frequency 3 ! ! Set the SLA schedule and duration ! ip sla schedule 1 life forever start-time now ip sla schedule 2 life forever start-time now ! ! Define ACLs for traffic that ! will be NATed to the ISP connections ! !!! is is this right ? for smtp traffic !access-list 100 permit ip 192.168.0.0 0.0.0.255 any eq smtp access-list 110 permit ip 192.168.0.0 0.0.0.255 any ! ! Route-maps associate NAT ACLs with NAT ! outside on the ISP-facing interfaces ! route-map fixed-nat permit 10 match ip address 110 match interface ATM0 ! route-map dhcp-nat permit 10 match ip address 110 match interface BRI0 !!! is is this right ? !route-map smtp-static permit 10 ! match ip address 100 ! set interface BRI0 ip dns server | |||||||
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