carp

  1. J

    Solved CARP on /30 subnet

    Hello folks, I have the following situation: +-----------+ 172.31.255.6/24 | | 192.168.100.1/24 +--------+ silver1 +---------+...
  2. J

    Solved CARP Gateway - Slow internet access

    Hello folks, I have two machines (exact same hardware) that I'd like to use as a gateway/router for LAN clients to access the internet. I am using CARP for fail-over which is already working - therefore, let's refer to the two machines as "the gateway" from here on. Here's a drawing for sanity...
  3. J

    Solved Fail-over with CARP on the public internet

    Hello folks, I have two identical baremetal machines in a datacenter. Both machines have two NICs each. Both interfaces have static public IPv4 addresses. The servers are essentially connected "directly to the internet". Both machines run FreeBSD 11.1 64-bit. The second machine is purely there...
  4. M

    Adding an alias while using CARP with multiple IP aliases

    I am currently using exactly the same approach with CARP as described in a prior posting to the stable mailing list, https://groups.google.com/forum/#!topic/mailing.freebsd.stable/-NiHmBWMulY . I have noticed in my router lab that the MASTER goes into BACKUP mode briefly whenever a new alias...
  5. gugabsd

    Alternative to Carp arp.balance

    Hi guys, I've created a way to simulate the arp.balance option that existed in previous versions of Carp in FreeBSD. what do you think ? https://gist.github.com/lgcosta/d7dce5aac1f83c64d53d548f5e9f695e In principle this solves my case, but would i have problems with arp tables? or was this...
  6. dch

    Solved NATted outbound jail traffic sometimes uses backup CARP IP on LACP/LAGG interface

    Outgoing traffic from a jail via PF NAT over a LAGG/LACP sometimes has the backup CARP IP address assigned to it. As this IP is only active on the "other" server, the return TCP connection traffic never actually gets back to our CARP master, and the other server sees spurious TCP...
  7. D

    Possible Carp config issue?

    So I have 2 systems configured as gateways with natd, ipfw and both running carp for redundnacy. I have em0 as my internal network and em1 as public. ifconfig on the one in backup shows: em0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500...
  8. camerongray

    Solved CARP preemption not working (FreeBSD 11.0)

    I'm trying to set up a pair of FreeBSD 11.0 machines as a redundant pair of routers with failover provided by CARP and PFSync. A slightly simplified version of what I'm doing: 2 machines - "Router A" and "Router B" Each machine has 3 interfaces - One dedicated to PFSync, another has a single...
  9. D

    How can I destroy carp VHID

    Hello after carp configuration on my IMS interface I see that I have also 2 INIT state vhid configured on EXT interface. IMS: flags=8943 metric 0 mtu 1500 options=103<RXCSUM,TXCSUM,TSO4> ether e4:11:5b:b0:0a:fa inet 10.16.0.218 netmask 0xfffffff0 broadcast 10.16.0.223 inet...
  10. aXi

    CARP analyse in Wireshark

    Hello, Having some trouble with CARP on vmware ESXi I made network carptures with tcpdump. Here is the advertisement Wireshark interpert as VRRP: My configuration in rc.conf is: ifconfig_em0="inet 10.1.25.197 netmask 255.255.0.0" ifconfig_em0_alias0="vhid 25 pass ToRTHYSTRac alias...
  11. Charlie Root

    Solved CARP and arp table

    Hi, I have trouble when setting up carp for gateway server. Server A has ip address 10.10.0.11 , server B has address 10.10.0.12. They share virtual ip address 10.10.0.1 by carp and they are in the same vlan. Problem is: If server C has ip address 10.10.0.34 and set default gateway to one of...
  12. D

    PF CARP Broadcast question

    I'm setting up a pf firewall with CARP and seeing the following message in the log 192.168.xx.yy > 224.0.0.18: vrrp 192.168.xx.yy > 224.0.0.18: VRRPv2, Advertisement, vrid 3, prio 240, authtype none, intvl 1s, length 36, addrs(7)...
  13. U

    CARP and surviving a HAProxy failure

    Hi, Trying out carp and net/haproxy. I have 2 nodes sharing a single IP using CARP. On each node iI have HAProxy and Apache running. HAProxy binds the frontend to this VIP, and the backend to each webserver running on the nodes. Everything works fine, CARP moves the IP, HAProxy takes servers...
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