Questions tagged [failover]
For questions about failover in a network aspect. For instance, if you have a stack of switches and you have problems with master/slave failover or a Firewall setup with multiple hot standby's where it doesn't failover correctly. Failover can also be used in relation to a network design.
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CloudFlare Load Balancing to switch in case of on-prem internet link failure?
A bit of a newbie question, but I can't quite understand from CloudFlare's own documentation if their Load Balancing is what I want to use (currently we just use CloudFlare's free DNS services, so ...
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Cisco vPC election process
Quite a bad scenario. I had a power outage after which only one of two Nexus switches came online. It couldn't establish peer link (of course). I believe I have to elect the master manually, but don't ...
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ASA - Redundancy ISP in Multiple contexts
At the moment I am interested in the fault tolerance of the route to providers in Cisco ASA in multiple contexts.
As I know, in one context you cannot track the route and change it, but the task is to ...
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Failover with sticky MAC address on network switch
Introduction:
I am configuring a server to have two ethernet ports (one as primary, the other is redundant) connected to two different switches. In the switches, I enabled the sticky MAC address and ...
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Using PBR or similar for an IP SLA for a C1111-8P-TLELA with a dynamic Cellular WAN IP
I am trying to get 4G Failover working on a Cisco C1111-8P-LTELA router. I have a known working solution that I usually use with IP SLA, and a local PBR route-map that forces traffic out of the ...
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Data Center Warm Disaster Recovery
We are planning to create a backup data center for warm disaster recovery. Critical services will be replicated on application level to the new data center, all other services will be backuped daily.
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Who should reset TCP connection after VIP has moved onto another host? [closed]
Imagine such a situation - TCP connection(NFS4 or database) between client(Linux) and virtual IP hosted on a server(Linux). Server fails and VIP is taken over by another server(using ARP).
The client ...
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Link failure detection between 2 routers
When 2 routers are linked directly together with eBGP between them, how is a link failure detected ? With the BGP timers ? Or faster with some sort of L1 tool?
For instance, assume we have the ...
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Cisco ASA 5585-x Failover Virtual MAC address
I have configured Cisco ASA 5585-x with Active/Standby mode, cisco best practice saying you should use Virtual MAC address on interface to avoid traffic disruption when you do failover. now question ...
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Best way to make a network failsafe?
I have a Debian based machine with 2 completely different network interfaces from 2 different ISPs acting as a backup for my server connection. These have two different IPs (Let's say IP1 and ...
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pfSense: Bundling carp VIPs
When configuring Carp for pfSense as recommended by their guide, this issue appears: when pulling out the WAN cable (simulating, say, a cable failure, switch port failure, or network card failure), ...
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eBGP failover without packet drops
I have core1 and core2 router peer with same ISP but distinct hardware and they are sending us default route. currently all in/out traffic going over to core1 and core2 is idle (standby), I have iBGP ...
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Is it possible management IP address of ASA don't move to the new active ASA when failover happen?
I created a failover configuration on two ASA5545s.
I set up, for example, 10.10.10.1 on the management interface of the primary ASA and 10.10.10.2 on the secondary ASA.
I know when a failoever happen,...
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Cisco ASA failover monitor-interface policy
I have Cisco ASA 5585 and it has 10G interface in port channel where i configured multiple vlan sub-interface, is it worth to monitor every single sub-interface for failover policy or just monitor ...
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NAT and two internet providers, how to configure failover
Will you please help me to setup ISP2 as a failover internet provider. Configuration as follows:
ip source-route
!
ip cef
!
no ip domain lookup
no ipv6 cef
!
multilink bundle-name authenticated
!
...
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