# \#link-controller **URL:** https://community.f5.com/tag/link-controller/872.md [Latest](https://community.f5.com/latest.md) · [Categories](https://community.f5.com/categories.md) · [Tags](https://community.f5.com/tags.md) --- ## [Persisting SNAT Addresses in Link Controller Deployments](https://community.f5.com/t/persisting-snat-addresses-in-link-controller-deployments/68054)
**Author:** [@JRahm](https://community.f5.com/u/JRahm)\ **Replies:** 1\ **Last updated:** [February 9, 2024, 12:54am UTC](https://community.f5.com/t/persisting-snat-addresses-in-link-controller-deployments/68054 "2024-02-09T00:54:35Z")
My friend Bruce Hampton recently reached out with a problem he was facing with a BIG-IP Link Controller (LC) deployment. We had a nice exchange of ideas for several days before he carried this over the finish line with a… --- ## [Link Controller, dual-homing with two ISP and own ASN and IP blocks](https://community.f5.com/t/link-controller-dual-homing-with-two-isp-and-own-asn-and-ip-blocks/46970)
**Author:** [@whh2019](https://community.f5.com/u/whh2019)\ **Replies:** 1\ **Last updated:** [May 24, 2023, 12:51pm UTC](https://community.f5.com/t/link-controller-dual-homing-with-two-isp-and-own-asn-and-ip-blocks/46970 "2023-05-24T12:51:30Z")
Hello, I’ve been reading and searching around to find an answer to my question but there is one part that is not clear. We have a data center with our own /21 IP block and ASN. Currently we are connected through an I… --- ## [Local Traffic Adaptive Monitoring](https://community.f5.com/t/local-traffic-adaptive-monitoring/5945)
**Author:** [@mr\_shaggy\_17493](https://community.f5.com/u/mr_shaggy_17493)\ **Replies:** 2\ **Last updated:** [June 6, 2022, 9:24am UTC](https://community.f5.com/t/local-traffic-adaptive-monitoring/5945 "2022-06-06T09:24:56Z")
Hi All, Anyone ever try to used adaptive monitoring on F5? As mention on LTM monitor reference document: “A monitor with adaptive response time enabled marks a service as up or down based on the deviation of latenc… --- ## [GTM Sync or Device Management Sync?](https://community.f5.com/t/gtm-sync-or-device-management-sync/44203)
**Author:** [@Ernesto\_M](https://community.f5.com/u/Ernesto_M)\ **Replies:** 1\ **Last updated:** [March 31, 2021, 9:49am UTC](https://community.f5.com/t/gtm-sync-or-device-management-sync/44203 "2021-03-31T09:49:00Z")
I have an old pair of devices on HA in version 11.6.4, they don’t have GTM module, but Link Controller instead. There’s an issue that sometimes, suddenly, Wide IPs configuration is changed without any human intervention,… --- ## [link controller](https://community.f5.com/t/link-controller/45529)
**Author:** [@Sandesh](https://community.f5.com/u/Sandesh)\ **Replies:** 0\ **Last updated:** [October 16, 2019, 3:28pm UTC](https://community.f5.com/t/link-controller/45529 "2019-10-16T15:28:20Z")
Hi All , I want to configure the link controller for outbound traffic ? I have two ISP if one ISP goes down all the traffic route to second ISP and same i need to configure server load balancer on the same box for … --- ## [F5 Big-IP Link Controller resolve fqdn to DNS request](https://community.f5.com/t/f5-big-ip-link-controller-resolve-fqdn-to-dns-request/7233)
**Author:** [@Darlan\_Baquer\_2](https://community.f5.com/u/Darlan_Baquer_2)\ **Replies:** 0\ **Last updated:** [April 17, 2019, 1:20pm UTC](https://community.f5.com/t/f5-big-ip-link-controller-resolve-fqdn-to-dns-request/7233 "2019-04-17T13:20:15Z")
Hi, I have a environment licensed with Link Controller and not with GTM, I need to configure the LC with WideIP resolving DNS request, the zone configuration remains on external DNS server, when the DNS Server receive a … --- ## [Link Controller sync issues](https://community.f5.com/t/link-controller-sync-issues/22163)
**Author:** [@Fernando\_Carran](https://community.f5.com/u/Fernando_Carran)\ **Replies:** 6\ **Last updated:** [February 18, 2019, 2:33pm UTC](https://community.f5.com/t/link-controller-sync-issues/22163 "2019-02-18T14:33:45Z")
Hi Folks. We tried to configure LC from standalone to HA (Active-Standby). When we run gtm\_add the objects of LC was synced. After, when we try to sync from Device Management only LTM objects are synced. Other issue is … --- ## [Link Controller Version 13 or 14](https://community.f5.com/t/link-controller-version-13-or-14/7102)
**Author:** [@Christian\_Manue](https://community.f5.com/u/Christian_Manue)\ **Replies:** 1\ **Last updated:** [February 17, 2019, 6:36am UTC](https://community.f5.com/t/link-controller-version-13-or-14/7102 "2019-02-17T06:36:43Z")
Hello Comunity, My customer have a BIG-IP 2000 with firmware version 12.1.3.3 that have a Link Controller license. Is it posible to upgrade to version 13 or 14 with that type of license? I have heard that Link Controller… --- ## [DNS Flag Day - F5 Link Controller Wide IP question](https://community.f5.com/t/dns-flag-day-f5-link-controller-wide-ip-question/42888)
**Author:** [@MFS\_324204](https://community.f5.com/u/MFS_324204)\ **Replies:** 1\ **Last updated:** [January 30, 2019, 4:15am UTC](https://community.f5.com/t/dns-flag-day-f5-link-controller-wide-ip-question/42888 "2019-01-30T04:15:30Z")
Hi, If External DNS is being pointed to Link Controller (LC) Inbound Wide IP, does it consider as using GTM? Anything to be worried about? I can see in the KB myF5 - it mentioned as Non-applicable, just to clari… --- ## [Monitors in Link Controller](https://community.f5.com/t/monitors-in-link-controller/34052)
**Author:** [@Manthan\_Brahamb](https://community.f5.com/u/Manthan_Brahamb)\ **Replies:** 1\ **Last updated:** [November 17, 2018, 11:46am UTC](https://community.f5.com/t/monitors-in-link-controller/34052 "2018-11-17T11:46:52Z")
What is the purpose of setting Alias Addresses in monitors? Please elaborate on this. --- ## [Client to Site VPN over F5 link controller.](https://community.f5.com/t/client-to-site-vpn-over-f5-link-controller/34036)
**Author:** [@Manthan\_Brahamb](https://community.f5.com/u/Manthan_Brahamb)\ **Replies:** 0\ **Last updated:** [November 12, 2018, 4:22am UTC](https://community.f5.com/t/client-to-site-vpn-over-f5-link-controller/34036 "2018-11-12T04:22:47Z")
Does F5 Link Controller supports Client to Site VPN? If yes then will the traffic moved over to other ISP in case of any issues over a particular ISP? If the fail-over is successful then will it break the session of VPN? … --- ## [VPN failover in BIG-IP Link Controller](https://community.f5.com/t/vpn-failover-in-big-ip-link-controller/34043)
**Author:** [@Manthan\_Brahamb](https://community.f5.com/u/Manthan_Brahamb)\ **Replies:** 0\ **Last updated:** [November 6, 2018, 4:27pm UTC](https://community.f5.com/t/vpn-failover-in-big-ip-link-controller/34043 "2018-11-06T16:27:12Z")
Does F5 Link Controller supports Client to Site VPN? If yes then will the traffic moved over to other ISP in case of any issues over a particular ISP? If the fail-over is successful then will it break the session of VPN? … --- ## [VPN s2s through F5 LC with ASA like Endpoint](https://community.f5.com/t/vpn-s2s-through-f5-lc-with-asa-like-endpoint/26131)
**Author:** [@christiancruz88](https://community.f5.com/u/christiancruz88)\ **Replies:** 6\ **Last updated:** [May 22, 2018, 4:15pm UTC](https://community.f5.com/t/vpn-s2s-through-f5-lc-with-asa-like-endpoint/26131 "2018-05-22T16:15:48Z")
Hi, i have the next situation: Internet → F5 LC → Cisco ASA I understand that 2 VS must be configured, 1 for incoming traffic and 1 for outbound traffic: VS incoming traffic: Performance Layer 4, destination … --- ## [F5 Link controller ISP migration considerations](https://community.f5.com/t/f5-link-controller-isp-migration-considerations/42899)
**Author:** [@MFS\_324204](https://community.f5.com/u/MFS_324204)\ **Replies:** 5\ **Last updated:** [December 29, 2017, 1:56am UTC](https://community.f5.com/t/f5-link-controller-isp-migration-considerations/42899 "2017-12-29T01:56:02Z")
Is there any known template or best practices to migrate ISP at LC? Currently customer have 2 ISP, they would like to swap one of the ISP link to another provider Any recommendation to manipulate the settings so th… --- ## [LC Wide-IP Config problems(Virtual Servers Not Listed)](https://community.f5.com/t/lc-wide-ip-config-problems-virtual-servers-not-listed/45259)
**Author:** [@Tosin\_Omojola](https://community.f5.com/u/Tosin_Omojola)\ **Replies:** 3\ **Last updated:** [October 31, 2017, 1:05pm UTC](https://community.f5.com/t/lc-wide-ip-config-problems-virtual-servers-not-listed/45259 "2017-10-31T13:05:50Z")
Hi I have observed an anomaly in the LC module I have here. Well, I could say that because I did all am supposed to do right and it’s not turning up as expected. I need help please. I have configured the virtual serve… --- ## [Link Controller Outbound Deployment: Specific ISP Routes for Outbound](https://community.f5.com/t/link-controller-outbound-deployment-specific-isp-routes-for-outbound/14086)
**Author:** [@Goldz\_180077](https://community.f5.com/u/Goldz_180077)\ **Replies:** 1\ **Last updated:** [October 7, 2017, 2:58pm UTC](https://community.f5.com/t/link-controller-outbound-deployment-specific-isp-routes-for-outbound/14086 "2017-10-07T14:58:07Z")
Hi F5 team, Currently, we are deploying LC Outbound Deployment with 2 ISP. We have a specific Internal User, example 192.168.1.10 only want to connect to specific ISP to go outbound internet. for this setup, wha… --- ## [SSL offload without LTM provisioned](https://community.f5.com/t/ssl-offload-without-ltm-provisioned/7876)
**Author:** [@iamcejiro\_16285](https://community.f5.com/u/iamcejiro_16285)\ **Replies:** 10\ **Last updated:** [October 4, 2017, 8:43am UTC](https://community.f5.com/t/ssl-offload-without-ltm-provisioned/7876 "2017-10-04T08:43:18Z")
Hi, We have a LC 2000 implemented in our client and they are planning to have a SSL offload. Is it possible to do SSL offload even without the LTM module provisioned? If not, is there other option? Thanks! --- ## [Link Controller "QoS" link Monitoring](https://community.f5.com/t/link-controller-qos-link-monitoring/53693)
**Author:** [@SMilanic](https://community.f5.com/u/SMilanic)\ **Replies:** 0\ **Last updated:** [September 22, 2016, 2:58pm UTC](https://community.f5.com/t/link-controller-qos-link-monitoring/53693 "2016-09-22T14:58:57Z")
I am looking at various possibilities for Link Controller link monitoring. As I see form documentation, there are various monitors that you can apply to link monitoring, but none of the preconfigured monitor gives me the… --- ## [Link Controller -- UDP monitor](https://community.f5.com/t/link-controller-udp-monitor/20486)
**Author:** [@malmogari\_17013](https://community.f5.com/u/malmogari_17013)\ **Replies:** 1\ **Last updated:** [June 21, 2016, 11:06pm UTC](https://community.f5.com/t/link-controller-udp-monitor/20486 "2016-06-21T23:06:47Z")
Hi, I’m facing a problem with LC; LC can’t monitor UDP it is only monitor tcp,http,icmp,https,ftp and firpass. Indeed, the dns, which i’m trying to monitor, allows for UDP 53 only. Is there any way to monitor UDP or ther… --- ## [Upgrading LC 2000s to higher f5 box](https://community.f5.com/t/upgrading-lc-2000s-to-higher-f5-box/17502)
**Author:** [@Nathaneil0227\_2](https://community.f5.com/u/Nathaneil0227_2)\ **Replies:** 4\ **Last updated:** [April 27, 2016, 6:51am UTC](https://community.f5.com/t/upgrading-lc-2000s-to-higher-f5-box/17502 "2016-04-27T06:51:02Z")
Hi All/DC Experts, Anyone who can give me challenges or anything they experience when you upgrade physical f5 box. Thank you. Regards, -Nat --- ## [Link Controller - bigip\_link from big3d time out](https://community.f5.com/t/link-controller-bigip-link-from-big3d-time-out/14442)
**Author:** [@Rodrigo\_N\_Soare](https://community.f5.com/u/Rodrigo_N_Soare)\ **Replies:** 13\ **Last updated:** [March 29, 2016, 5:52am UTC](https://community.f5.com/t/link-controller-bigip-link-from-big3d-time-out/14442 "2016-03-29T05:52:03Z")
I’m with this problem can someone help me? "May 9 11:41:03 f5 alert gtmd \[6921\]: 011a2003: 1: SNMP\_TRAP: Link / Common / embratel (ip = 201.73.190.81) state change blue → red (Monitor / Common / bigip\_link from : no repl… --- ## [Quick Configuration for Two ISP LC ( In-Line)](https://community.f5.com/t/quick-configuration-for-two-isp-lc-in-line/3141)
**Author:** [@aalkhuja\_160331](https://community.f5.com/u/aalkhuja_160331)\ **Replies:** 2\ **Last updated:** [January 5, 2016, 6:29am UTC](https://community.f5.com/t/quick-configuration-for-two-isp-lc-in-line/3141 "2016-01-05T06:29:45Z")
Hi All, I have to implement an In-Line LC ( with Two ISPs). can anyone have the quick setup configuration for the version 11.X I already googled it, but the setup implies for only V 10.X Is there a significant diff… --- ## [LInk controller 1600](https://community.f5.com/t/link-controller-1600/48151)
**Author:** [@IRONMAN](https://community.f5.com/u/IRONMAN)\ **Replies:** 5\ **Last updated:** [December 30, 2015, 7:53pm UTC](https://community.f5.com/t/link-controller-1600/48151 "2015-12-30T19:53:42Z")
ANY ONE HELP ME MY CONFIGURATION ISP1-Router1-LC1-SWITCH1- FW1-CORE 1 ISP2-Router2-LC2-SWITCH2- FW2-CORE 2 Now my question, l, Router1 has 2 ports, can i aggregation router 2 ports and connect the each por… --- ## [What is the best design for introducing a cluster of two units of Link Controller 1600?](https://community.f5.com/t/what-is-the-best-design-for-introducing-a-cluster-of-two-units-of-link-controller-1600/7173)
**Author:** [@Mahmoud\_Eldeeb](https://community.f5.com/u/Mahmoud_Eldeeb)\ **Replies:** 4\ **Last updated:** [December 24, 2015, 9:38am UTC](https://community.f5.com/t/what-is-the-best-design-for-introducing-a-cluster-of-two-units-of-link-controller-1600/7173 "2015-12-24T09:38:44Z")
how to connect LC to the internal network with respect to high availability methodology? --- ## [Granular monitor to check Links and the default gateway pool (Link Controller)](https://community.f5.com/t/granular-monitor-to-check-links-and-the-default-gateway-pool-link-controller/22116)
**Author:** [@Fernando\_Carran](https://community.f5.com/u/Fernando_Carran)\ **Replies:** 1\ **Last updated:** [November 21, 2015, 8:39pm UTC](https://community.f5.com/t/granular-monitor-to-check-links-and-the-default-gateway-pool-link-controller/22116 "2015-11-21T20:39:53Z")
The client need that a “granular” monitor of the links and default gateway pool of LC. In the last case with F5 we added the bigip\_link monitor to each link (best practice). In this moment the client have gateway\_i… --- ## [Active/Passive VS with Link Controller and Wide IPs](https://community.f5.com/t/active-passive-vs-with-link-controller-and-wide-ips/18569)
**Author:** [@Nicolas\_ROMERO](https://community.f5.com/u/Nicolas_ROMERO)\ **Replies:** 3\ **Last updated:** [November 5, 2015, 11:59am UTC](https://community.f5.com/t/active-passive-vs-with-link-controller-and-wide-ips/18569 "2015-11-05T11:59:48Z")
Hi, I would like to know if it’s possible to have an active and passive VS on a DNS record in the Wide IPs section on a Link Controller. I know that we can make Activation Group on a pool but unfortunately it’s not… --- ## [Outbound SNAT Link Controller](https://community.f5.com/t/outbound-snat-link-controller/58951)
**Author:** [@Misael\_Lopez](https://community.f5.com/u/Misael_Lopez)\ **Replies:** 0\ **Last updated:** [November 2, 2015, 6:47pm UTC](https://community.f5.com/t/outbound-snat-link-controller/58951 "2015-11-02T18:47:04Z")
Hello Everyone, We are planning to install 2 BIG-IP system in HA with link controller license in order to load balance 2 ISPs to Internet. the planned deployment would be: Internet ↔ 2 Routers ISPs ↔ Link controllers … --- ## [Link aggregation with Link controller](https://community.f5.com/t/link-aggregation-with-link-controller/45268)
**Author:** [@Tosin\_Omojola](https://community.f5.com/u/Tosin_Omojola)\ **Replies:** 4\ **Last updated:** [June 1, 2015, 11:07am UTC](https://community.f5.com/t/link-aggregation-with-link-controller/45268 "2015-06-01T11:07:56Z")
I know link controller load-balances multiple ISP links. Is it possible to achieve combined maximum of two or more links using Link controller? I have two ISP links. I want to have the combined bandwidth of both of them … --- ## [Create a Wide-IP in the "Member list" does not appear any virtual server to associate.](https://community.f5.com/t/create-a-wide-ip-in-the-member-list-does-not-appear-any-virtual-server-to-associate/14412)
**Author:** [@Rodrigo\_N\_Soare](https://community.f5.com/u/Rodrigo_N_Soare)\ **Replies:** 4\ **Last updated:** [January 28, 2015, 5:19pm UTC](https://community.f5.com/t/create-a-wide-ip-in-the-member-list-does-not-appear-any-virtual-server-to-associate/14412 "2015-01-28T17:19:49Z")
Hello People, I’m a licensed equipment and provisioned with the LC version 11.6HF3 and when i create a Wide-IP in the “Member list” does not appear any virtual server to associate. Recalling that created the Virtual S… --- ## [Link Controller: route based on geographical location](https://community.f5.com/t/link-controller-route-based-on-geographical-location/12332)
**Author:** [@Rafa\_CF\_179052](https://community.f5.com/u/Rafa_CF_179052)\ **Replies:** 1\ **Last updated:** [December 16, 2014, 8:59pm UTC](https://community.f5.com/t/link-controller-route-based-on-geographical-location/12332 "2014-12-16T20:59:09Z")
Would it be possible to select the best ISP link for outbound traffic, based on the geographical location of the destination IP address? [Next page](https://community.f5.com/tag/link-controller/872.md?match_all_tags=true&page=1&tags%5B%5D=link-controller)