Question

Dual Site Internet / Point to Point Failover

Asked by: dwright1542

I have a client with 2 sites, one in Tampa and One in Philly.

the Sites are connected via a 3.0MB bonded dual T1 with Cisco 2620XM's at each end.  These routers are the default gateway for the networks.  The routers run RIP, and have thier default gateway set to the watchguard firewalls.

Each site also has a 3.0MB bonded T1 to the internet, again via Cisco 2620XM's  They have Watchguard firewalls at each location.   The watchguards have a permanent VPN between them.  

The watchguards are getting old and they are looking to replace them.  

Right now, I can failover to the VPN's automatically if the PTP link goes down because of the default gateway.

However, if the internet at either site dies, a manual route change must be made in the internal 2620's, because there is no way for the internal 2620's to know that the internet went down.

Can anyone suggest a firewall / router solution that would be able to inform my internal cisco 2620's that the internet has failed?  i'm assuming it would have to be a RIP  OSPF or BGP message....

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Asked On
2005-08-26 at 17:44:25ID21541974
Tags

failover

,

point

,

link

,

routing

Topics

Miscellaneous Networking

,

Watchguard Firewall

,

Networking Hardware Firewalls

Participating Experts
1
Points
125
Comments
7

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Answers

 

by: Danny_LarouchePosted on 2005-08-26 at 18:30:08ID: 14766390

I am little bit confused about the layout, could you please give a small schema of your network and addresing

 

by: dwright1542Posted on 2005-08-26 at 18:53:22ID: 14766447





192.168.95.251e Watchguard - 2620XM------Internet VPN--------2620XM ---- Watchguard 192.168.110.251
          |                                                                                                                               |
          |                                                                                                                               |
          |                                                                                                                               |
192.168.95.250 eth0 2620XM--------------3.0MB MLPPP ----------------------2620XM eth0 192.168.110.250
255.255.255.0                                                                                                        255.255.255.0
192.168.95.251dg                                                                                                   192.168.110.251dg

 

by: Danny_LarouchePosted on 2005-08-27 at 06:40:40ID: 14767829

Ok now i see.  Since you are about to replace your watchguard units, i propose to use Fortinet FG60 or FG100 on both sites and use them as default gateway for the LANs.  They have 2 WAN interfaces and can then fail over either link if one become unaccessible. With routing policies you can define multiple routes for inter-office and internet traffic with different priority. Ping based probe are used to ensure integrity of the all routes.

If either PTP link fail it will use the VPN for inter-LANs traffic. If Internet link is down it will use internet link at remote site through the PTP.

LAN1--- [FG100]- WAN1--- [2620XM]-----VPN-----[2620XM] ----WAN1--[FG100]-----LAN2
                   |                                                                                       |
                WAN2                                                                                WAN2
                   |                                                                                       |
                   |                                                                                       |
               2620XM------------------------3.0MB MLPPP ----------------------2620XM

 

by: dwright1542Posted on 2005-08-30 at 18:51:05ID: 14790308

Will running QoS over the MLPPP link be a problem?  There is videoconferenceing at each end.

I also need to elaborate a bit more:
behind lan 1 is another PPP T1 to another subnet, and behind lan2 there are 2 PPP T1's to other subnets.

can this be accounted for in the FG100 policy routing tables?

-Darren

 

by: Danny_LarouchePosted on 2005-08-30 at 20:21:08ID: 14790661

No, the fortiOS support Traffic shapping and TOS tag defined in specific firewalling policies.  Extra networks segments may be connected to DMZ interfaces. For the videoconferencing, i know there is currently an issue with H323 when using polycom and tanberg units, but about to be fixed.

 

by: dwright1542Posted on 2005-08-30 at 21:19:29ID: 14790858

that will be an issue....We have 2 Polycoms at each site.

-Darren

 

by: Danny_LarouchePosted on 2005-08-31 at 21:02:23ID: 14799432

The problem  are specific to some OS release, but some of them seem to handle H323 correctly.  You can also use Sonicwall 2040 with its advanced OS.  It is more expensive when the advanced OS is needed, but do a similar job.

20120131-EE-VQP-002

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