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Questions tagged [dual-homed]

For questions about Dual Homed, where it should only be used in relation to Firewall dual homing. Firewall dual-homing provides the first-line defense and protection technology for keeping untrusted bodies from compromising information security by violating trusted network space.

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8 votes
3 answers

Active / Active BGP with Default routes

I've just lodged a request with upstream to clarify some specifics of their recommended BGP configuration. Currently, I will be dual-homing with my upstream via PI addresses. Advertising via BGP with ...
Geekman's user avatar
  • 1,478
7 votes
3 answers

How does a network know whether to send via internet/wifi or through cellular service?

I have a decent understanding of networking, but this question popped up in my head randomly and I can't figure it out. For example, if I have an iPhone that is used on a 3G network but is also ...
raisedandglazed's user avatar
6 votes
3 answers

Dual ASA5510 with dual ISP failover

I am setting up a highly redundant network and want to run my two ASA's in failover mode - each with a link to a router connected to two different ISP's. The topology: My two 2911's are running BGP ...
Frederik's user avatar
  • 175
5 votes
1 answer

Is there benefit to iBGP peering between CEs in a BGP dual-homed design?

Two companies wants to exchange some private prefixes (4K prefixes) using eBGP. Each company will have two border routers (with OSPF as IGP, and mutual redistribution & aggregate in eBGP) So, ...
ClearShell's user avatar
1 vote
3 answers

BGP Dual link with single ISP two different router

We have above scenario where currently we have only single link with ISP ROUTER1 but soon we are planning to have second link on same BGP router but ISP side it will comes from ISP ROUTER2. I heard ...
Satish's user avatar
  • 4,379
1 vote
1 answer

ISP Multi-homing in Datacenter

My company is in the process of getting another ISP connection in one of the data centers we co-locate in. Should our main internet circuit fail, we want to failover to this new ISP that has a diverse ...
DragonFist616's user avatar
1 vote
1 answer

VPLS how to signal CE facing interface failure

Hello, I have a BGP-based VPLS setup with one CE machine being multi-homed multi-homing works if i for example shut the active PE or i somehow disturb the connection between my PEs... that ok but ...
Radovan's user avatar
  • 73
1 vote
1 answer

dual homing WAN circuits BGP

we have the following scenario: MPLS_WAN_provider1 connects to our edge router1 via eBGP MPLS_WAN_provider2 connects to our edge router2 via eBGP Both edge routers are to connect to our LAN. We need ...
Tullio_IRL's user avatar
1 vote
1 answer

Traffic redirection and failover of ASA with multiple ISPs [closed]

I have two ISP connections on two Cisco 3900 routers, in front of Cisco asa 5525 x with firepower services firewall. I want to configure the firewall to redirect traffic based on the source address ...
user3191973's user avatar