Are both of these T1s from the same provider, or is one from Sprint and one from Qwest? From looking at your NAT pools, and the whois information (below), it appears to be one from Sprint and one from Qwest. I am not sure how the router would make the decision when doing PAT, but it is going to pick one of the NAT pools, and then load balance across the T1s (whether per destination or per packet cannot be determined without seeing if CEF is turned on and seeing the whole serial interface configurations). In this scenario, you would be trying to send some packets out to each provider with source IP addresses that are not valid source IPs for that network, this may or may not be your problem. Some portion of your packets may be being dropped by the providers when they see source IP addresses that they did not provide you. Or, all of your packets are sourced from Qwest, since that is the first NAT pool, and you are load sharing outbound, but all return traffic is coming in on the Qwest T1 and using up all your inbound bandwidth. Check to see which one of these is the case, or if neither applies, and get back to us.
whois -h whois.arin.net 65.120.161.167 Qwest Communications NET-QWEST-BLKS-4 (NET-65-112-0-0-1) 65.112.0.0 - 65.127.255.255 THREE Z PRINTING COMPANY Q1007-65-120-161-160 (NET-65-120-161-160-1) 65.120.161.160 - 65.120.161.191 # ARIN WHOIS database, last updated 2003-03-11 20:00 # Enter ? for additional hints on searching ARIN's WHOIS database. whois -h whois.arin.net 65.160.124.199 Sprint SPRINTLINK-2-BLKS (NET-65-160-0-0-1) 65.160.0.0 - 65.174.255.255 PowerNet Global Communications SPRINTLINK (NET-65-160-124-192-1) 65.160.124.192 - 65.160.124.223 # ARIN WHOIS database, last updated 2003-03-11 20:00 # Enter ? for additional hints on searching ARIN's WHOIS database. -----Original Message----- From: Terry Oldham [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 12, 2003 9:59 AM To: [EMAIL PROTECTED] Subject: slow wan connection [7:65165] Hello All, I recently posted to the newsgroup about configuring a mulitple T1 connection to a single network. I have since then got the configuration up and running however the connection out to the net is very slow. I cannot seem to figure out why. Here is the basics of the config: Fasteth0 ip address 172.16.100.2 ip nat inside Serial0 ip address 144.x.x.x ip nat outside Serial1 ip address 65.x.x.x ip nat outside ip nat pool Qwest 65.120.161.167 65.120.161.190 netmask 255.255.255.224 ip nat pool Sprint 65.160.124.199 65.160.124.222 netmask 255.255.255.224 ip nat inside source route-map Qwest1 pool overload ip nat inside source route-map Sprint1 pool overload ip nat inside source static 172.16.100.5 65.120.161.162 ip nat inside source static 172.16.200.5 65.160.124.194 ip nat inside source static 172.16.100.6 65.120.161.163 ip nat inside source static 172.16.200.6 65.160.124.195 ip nat inside source static 172.16.100.7 65.120.161.164 ip nat inside source static 172.16.200.7 65.160.124.196 ip nat inside source static 172.16.100.8 65.120.161.165 ip nat inside source static 172.16.200.8 65.160.124.197 ip nat inside source static 172.16.100.9 65.120.161.166 ip nat inside source static 172.16.200.9 65.160.124.198 ip classless ip route 0.0.0.0 0.0.0.0 65.x.x.x ip route 0.0.0.0 0.0.0.0 144.x.x.x ip route 65.0.0.0 255.0.0.0 Serial1 ip route 144.0.0.0 255.0.0.0 Serial0 ip route 172.0.0.0 255.0.0.0 FastEthernet0 ip http server ! ! access-list 10 permit 172.16.100.0 0.0.0.255 access-list 10 permit 172.16.200.0 0.0.0.255 The Serial interfaces are not showing any kind of problems and packets are going out of each of them. Thanks in advance Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=65188&t=65165 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]