John, What you want to look at is Cisco Express Forwarding (CEF). It allows load balancing across multiple T1's. For each serial interface you would have your own subnet (such as a /30) to your provider, because the serial interfaces cannot be on the same subnet. Turn on CEF using "ip cef" globally (you may want to ensure you have a recent IOS, as CEF was buggy early on). Then, on each serial interface, issue either "ip load-sharing per-packet" or "ip load-sharing per-destination" depending on how you want the load distributed. To give you the full 4.5Mbps to any one site, use per-packet load balancing.
James Willard, CCNA [EMAIL PROTECTED] -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of John Jones Sent: Tuesday, January 29, 2002 3:17 PM To: [EMAIL PROTECTED] Subject: Aggregate 3 T1's would this work. [7:33599] I have a configuration question. I have 3 dedicated T1's a router 3620 with three T1 CSU/DSU and one FastEthernet ports installed. All dedicated T's are from the same ISP. I want to aggregate the three T1's for increased bandwidth (4.5 Mbps) Would I run into issues Here is my config. Would this work? ! hostname Cisco3620 ! ! no ip name-server ! ip subnet-zero no ip domain-lookup ip routing ! interface Ethernet 0/0 no description ip address 172.16.10.1 255.255.255.0 ! interface Serial 0/0 no shutdown ip address 1.1.1.2 255.255.255.248 ! interface Serial 0/1 no shutdown ip address 1.1.1.3 255.255.255.248 ! interface Serial 1/0 no shutdown ip address 1.1.1.4 255.255.255.248 ! ip route 0.0.0.0 0.0.0.0 serial0/0 ip route 0.0.0.0 0.0.0.0 serial0/1 ip route 0.0.0.0 0.0.0.0 serial1/0 ! ! ip classless no ip http server ! end I tried this config with Cisco's config maker and I get IP address errors on the serial ports, specifically being on the same subnet. Would this do basic aggregation? Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=33600&t=33599 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
