How is the 5520 currently talking to the T1? Since the 5520 has no serial interfaces I assume that it must be connecting through some device that has a T1 interface and an Ethernet/Fast Ethernet interface. What are the options for connecting another T1 to that device?
The t-1's are on seperate routers. The current 1 is connected via ethernet to the firewall. The second 1 is not connected yet but is also ethernet. I was wondering if i could connect a hub in between the t-1's and then create a second default route on the firewall.
I believe that the difficult part of this will be the second default route. You could certainly connect the 2 routers and the firewall using a hub or I would prefer to do this with a small switch.
Adding a second default route implies load sharing when both routes are available and failover if one default route fails. Unfortunately the 5520 does not do this.
If your objective were redundancy and failover you could connect the 2 routers and the firewall via hub or switch and configure HSRP between the routers Ethernet interfaces with the firewall default route using the shared IP as the next hop address in the default route. If the routers track their serial interfaces in the HSRP you would have effective redundancy and failover.
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...