--_000_CY4PR12MB1798A464096A4DD2D6F8C105AB800CY4PR12MB1798namp_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable I don't understand why you would want this unless the ovirtnode itself was = actually the router, wouldn't you want to only have an IP on the management= network, and leave the rest of the VLANS blank so they depend on the route= r to route the traffic: NIC1 -> ovirt-mgmt - gateway set NIC2 -> VLAN3, VLAN4, etc... https://www.ovirt.org/documentation/admin-guide/chap-Logical_Networks/ Viewing or Editing the Gateway for a Logical Network Users can define the gateway, along with the IP address and subnet mask, fo= r a logical network. This is necessary when multiple networks exist on a ho= st and traffic should be routed through the specified network, rather than = the default gateway. If multiple networks exist on a host and the gateways are not defined, retu= rn traffic will be routed through the default gateway, which may not reach = the intended destination. This would result in users being unable to ping t= he host. oVirt handles multiple gateways automatically whenever an interface goes up= or down. --_000_CY4PR12MB1798A464096A4DD2D6F8C105AB800CY4PR12MB1798namp_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable <html xmlns:v=3D"urn:schemas-microsoft-com:vml" xmlns:o=3D"urn:schemas-micr= osoft-com:office:office" xmlns:w=3D"urn:schemas-microsoft-com:office:word" = xmlns:m=3D"http://schemas.microsoft.com/office/2004/12/omml" xmlns=3D"http:= //www.w3.org/TR/REC-html40"> <head> <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii"=
<meta name=3D"Generator" content=3D"Microsoft Word 15 (filtered medium)"> <style><!-- /* Font Definitions */ @font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4;} @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0in; margin-bottom:.0001pt; font-size:11.0pt; font-family:"Calibri",sans-serif;} h3 {mso-style-priority:9; mso-style-link:"Heading 3 Char"; mso-margin-top-alt:auto; margin-right:0in; mso-margin-bottom-alt:auto; margin-left:0in; font-size:13.5pt; font-family:"Times New Roman",serif; font-weight:bold;} a:link, span.MsoHyperlink {mso-style-priority:99; color:#0563C1; text-decoration:underline;} a:visited, span.MsoHyperlinkFollowed {mso-style-priority:99; color:#954F72; text-decoration:underline;} p {mso-style-priority:99; mso-margin-top-alt:auto; margin-right:0in; mso-margin-bottom-alt:auto; margin-left:0in; font-size:12.0pt; font-family:"Times New Roman",serif;} span.EmailStyle17 {mso-style-type:personal-compose; font-family:"Calibri",sans-serif; color:windowtext;} span.Heading3Char {mso-style-name:"Heading 3 Char"; mso-style-priority:9; mso-style-link:"Heading 3"; font-family:"Times New Roman",serif; font-weight:bold;} .MsoChpDefault {mso-style-type:export-only; font-family:"Calibri",sans-serif;} @page WordSection1 {size:8.5in 11.0in; margin:1.0in 1.0in 1.0in 1.0in;} div.WordSection1 {page:WordSection1;} --></style><!--[if gte mso 9]><xml> <o:shapedefaults v:ext=3D"edit" spidmax=3D"1026" /> </xml><![endif]--><!--[if gte mso 9]><xml> <o:shapelayout v:ext=3D"edit"> <o:idmap v:ext=3D"edit" data=3D"1" /> </o:shapelayout></xml><![endif]--> </head> <body lang=3D"EN-US" link=3D"#0563C1" vlink=3D"#954F72"> <div class=3D"WordSection1"> <p class=3D"MsoNormal">I don’t understand why you would want this unl= ess the ovirtnode itself was actually the router, wouldn’t you want t= o only have an IP on the management network, and leave the rest of the VLAN= S blank so they depend on the router to route the traffic:<o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">NIC1 -> ovirt-mgmt - gateway set<o:p>= </o:p></p> <p class=3D"MsoNormal">NIC2 -> VLAN3, VLAN4, etc…<o:p></o:p>= </p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal"><a href=3D"https://www.ovirt.org/documentation/admin= -guide/chap-Logical_Networks/">https://www.ovirt.org/documentation/admin-gu= ide/chap-Logical_Networks/</a><o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a= lt:auto"><b><span style=3D"font-size:13.5pt;font-family:"Times New Rom= an",serif">Viewing or Editing the Gateway for a Logical Network<o:p></= o:p></span></b></p> <p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a= lt:auto"><span style=3D"font-size:12.0pt;font-family:"Times New Roman&= quot;,serif">Users can define the gateway, along with the IP address and su= bnet mask, for a logical network. This is necessary when multiple networks exist on a host and traffic should be routed throug= h the specified network, rather than the default gateway.<o:p></o:p></span>= </p> <p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a= lt:auto"><span style=3D"font-size:12.0pt;font-family:"Times New Roman&= quot;,serif">If multiple networks exist on a host and the gateways are not = defined, return traffic will be routed through the default gateway, which may not reach the intended destination. This would = result in users being unable to ping the host.<o:p></o:p></span></p> <p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a= lt:auto"><span style=3D"font-size:12.0pt;font-family:"Times New Roman&= quot;,serif">oVirt handles multiple gateways automatically whenever an inte= rface goes up or down.<o:p></o:p></span></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> </div> </body> </html> --_000_CY4PR12MB1798A464096A4DD2D6F8C105AB800CY4PR12MB1798namp_--
Not sure if I understand what you are asking here, but the need for a gateway per network has emerged from the need to support other host networks (not VM networks) beside the management one. As an example, migration and storage networks can be defined, each passing dedicated traffic (one for storage communication and another for VM migration traffic), they may need to pass through different gateways. So the management network can be accessed using gateway A, storage using B and migration using C. A will usually be set on a host level as the host default gateway, and the others will be set for the individual networks. Otherwise, how would you expect storage to use a different router (than the management one) in the network? Thanks, Edy. On Thu, May 3, 2018 at 1:08 AM, Justin Zygmont <jzygmont@proofpoint.com> wrote:
I don’t understand why you would want this unless the ovirtnode itself was actually the router, wouldn’t you want to only have an IP on the management network, and leave the rest of the VLANS blank so they depend on the router to route the traffic:
NIC1 -> ovirt-mgmt - gateway set
NIC2 -> VLAN3, VLAN4, etc…
https://www.ovirt.org/documentation/admin-guide/chap-Logical_Networks/
*Viewing or Editing the Gateway for a Logical Network*
Users can define the gateway, along with the IP address and subnet mask, for a logical network. This is necessary when multiple networks exist on a host and traffic should be routed through the specified network, rather than the default gateway.
If multiple networks exist on a host and the gateways are not defined, return traffic will be routed through the default gateway, which may not reach the intended destination. This would result in users being unable to ping the host.
oVirt handles multiple gateways automatically whenever an interface goes up or down.
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
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On Mon, May 7, 2018 at 7:50 AM, Justin Zygmont <jzygmont@proofpoint.com> wrote:
Thanks for the reply,
Ok I see what you’re saying, its just confusing because there are several places that mention the gateways and none of them are clear on what they’re doing.
For example, under Cluster > Networks > Manage Networks, default route is only selectable for 1 network, yet in each network you create there is still the option of choosing a IP address and gateway.
On the host there are multiple routing tables, the default main one contains the default route of the host. Each defined network also maintains its own routing table, for traffic that it generated or is destined to it (in case the network has an IP). So these are not the same things.
Even if I don’t put in any IP or gateway for a tagged vlan, it still depends of the management gateway to forward to the router. I thought I should be able to lose the management network and still have all the tagged vlans working?
Setting an IP on a network is useful if you need the *host* to communicate with some remote on an IP level. If you need VM communication, then an IP on a host network is not needed. The vnics are connected through a bridge, not through a router. So traffic from a VM is not passing through the L3 stack of the host and its routing entries on the host do not effect that traffic.
*From:* Edward Haas [mailto:ehaas@redhat.com] *Sent:* Sunday, May 6, 2018 7:34 AM *To:* Justin Zygmont <jzygmont@proofpoint.com> *Cc:* users@ovirt.org *Subject:* Re: [ovirt-users] routing
Not sure if I understand what you are asking here, but the need for a gateway per network has emerged from the need to support other host networks (not VM networks) beside the management one.
As an example, migration and storage networks can be defined, each passing dedicated traffic (one for storage communication and another for VM migration traffic), they may need to pass through different gateways.
So the management network can be accessed using gateway A, storage using B and migration using C. A will usually be set on a host level as the host default gateway, and the others will be set for the individual networks.
Otherwise, how would you expect storage to use a different router (than the management one) in the network?
Thanks,
Edy.
On Thu, May 3, 2018 at 1:08 AM, Justin Zygmont <jzygmont@proofpoint.com> wrote:
I don’t understand why you would want this unless the ovirtnode itself was actually the router, wouldn’t you want to only have an IP on the management network, and leave the rest of the VLANS blank so they depend on the router to route the traffic:
NIC1 -> ovirt-mgmt - gateway set
NIC2 -> VLAN3, VLAN4, etc…
https://www.ovirt.org/documentation/admin-guide/chap-Logical_Networks/ <https://urldefense.proofpoint.com/v2/url?u=https-3A__www.ovirt.org_documentation_admin-2Dguide_chap-2DLogical-5FNetworks_&d=DwMFaQ&c=Vxt5e0Osvvt2gflwSlsJ5DmPGcPvTRKLJyp031rXjhg&r=FiPhL0Cl1ymZlnTyAIIL75tE4L0reHcDdD-7wUtUGHA&m=lvMQTxxtMmO0n6usZZCFu7YpsCTkH0c0sLWerugBDGo&s=MDRHWiynqsCFNQ5_p0hyRdgEgBE8A9n3XCv7Ml8_HdU&e=>
*Viewing or Editing the Gateway for a Logical Network*
Users can define the gateway, along with the IP address and subnet mask, for a logical network. This is necessary when multiple networks exist on a host and traffic should be routed through the specified network, rather than the default gateway.
If multiple networks exist on a host and the gateways are not defined, return traffic will be routed through the default gateway, which may not reach the intended destination. This would result in users being unable to ping the host.
oVirt handles multiple gateways automatically whenever an interface goes up or down.
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users <https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.ovirt.org_mailman_listinfo_users&d=DwMFaQ&c=Vxt5e0Osvvt2gflwSlsJ5DmPGcPvTRKLJyp031rXjhg&r=FiPhL0Cl1ymZlnTyAIIL75tE4L0reHcDdD-7wUtUGHA&m=lvMQTxxtMmO0n6usZZCFu7YpsCTkH0c0sLWerugBDGo&s=3AoaP23_BKDL6oJS92yzlJaVu_jOwJTm8d1fL4HmRug&e=>
I see, thanks. Maybe I could help add that scenario to the docs for you? From: Edward Haas [mailto:ehaas@redhat.com] Sent: Wednesday, May 9, 2018 2:26 PM To: Justin Zygmont <jzygmont@proofpoint.com> Cc: users@ovirt.org Subject: Re: [ovirt-users] routing On Mon, May 7, 2018 at 7:50 AM, Justin Zygmont <jzygmont@proofpoint.com<mailto:jzygmont@proofpoint.com>> wrote: Thanks for the reply, Ok I see what you’re saying, its just confusing because there are several places that mention the gateways and none of them are clear on what they’re doing. For example, under Cluster > Networks > Manage Networks, default route is only selectable for 1 network, yet in each network you create there is still the option of choosing a IP address and gateway. On the host there are multiple routing tables, the default main one contains the default route of the host. Each defined network also maintains its own routing table, for traffic that it generated or is destined to it (in case the network has an IP). So these are not the same things. Even if I don’t put in any IP or gateway for a tagged vlan, it still depends of the management gateway to forward to the router. I thought I should be able to lose the management network and still have all the tagged vlans working? Setting an IP on a network is useful if you need the *host* to communicate with some remote on an IP level. If you need VM communication, then an IP on a host network is not needed. The vnics are connected through a bridge, not through a router. So traffic from a VM is not passing through the L3 stack of the host and its routing entries on the host do not effect that traffic. From: Edward Haas [mailto:ehaas@redhat.com<mailto:ehaas@redhat.com>] Sent: Sunday, May 6, 2018 7:34 AM To: Justin Zygmont <jzygmont@proofpoint.com<mailto:jzygmont@proofpoint.com>> Cc: users@ovirt.org<mailto:users@ovirt.org> Subject: Re: [ovirt-users] routing Not sure if I understand what you are asking here, but the need for a gateway per network has emerged from the need to support other host networks (not VM networks) beside the management one. As an example, migration and storage networks can be defined, each passing dedicated traffic (one for storage communication and another for VM migration traffic), they may need to pass through different gateways. So the management network can be accessed using gateway A, storage using B and migration using C. A will usually be set on a host level as the host default gateway, and the others will be set for the individual networks. Otherwise, how would you expect storage to use a different router (than the management one) in the network? Thanks, Edy. On Thu, May 3, 2018 at 1:08 AM, Justin Zygmont <jzygmont@proofpoint.com<mailto:jzygmont@proofpoint.com>> wrote: I don’t understand why you would want this unless the ovirtnode itself was actually the router, wouldn’t you want to only have an IP on the management network, and leave the rest of the VLANS blank so they depend on the router to route the traffic: NIC1 -> ovirt-mgmt - gateway set NIC2 -> VLAN3, VLAN4, etc… https://www.ovirt.org/documentation/admin-guide/chap-Logical_Networks/<https://urldefense.proofpoint.com/v2/url?u=https-3A__www.ovirt.org_documentation_admin-2Dguide_chap-2DLogical-5FNetworks_&d=DwMFaQ&c=Vxt5e0Osvvt2gflwSlsJ5DmPGcPvTRKLJyp031rXjhg&r=FiPhL0Cl1ymZlnTyAIIL75tE4L0reHcDdD-7wUtUGHA&m=lvMQTxxtMmO0n6usZZCFu7YpsCTkH0c0sLWerugBDGo&s=MDRHWiynqsCFNQ5_p0hyRdgEgBE8A9n3XCv7Ml8_HdU&e=> Viewing or Editing the Gateway for a Logical Network Users can define the gateway, along with the IP address and subnet mask, for a logical network. This is necessary when multiple networks exist on a host and traffic should be routed through the specified network, rather than the default gateway. If multiple networks exist on a host and the gateways are not defined, return traffic will be routed through the default gateway, which may not reach the intended destination. This would result in users being unable to ping the host. oVirt handles multiple gateways automatically whenever an interface goes up or down. _______________________________________________ Users mailing list Users@ovirt.org<mailto:Users@ovirt.org> http://lists.ovirt.org/mailman/listinfo/users<https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.ovirt.org_mailman_listinfo_users&d=DwMFaQ&c=Vxt5e0Osvvt2gflwSlsJ5DmPGcPvTRKLJyp031rXjhg&r=FiPhL0Cl1ymZlnTyAIIL75tE4L0reHcDdD-7wUtUGHA&m=lvMQTxxtMmO0n6usZZCFu7YpsCTkH0c0sLWerugBDGo&s=3AoaP23_BKDL6oJS92yzlJaVu_jOwJTm8d1fL4HmRug&e=>
Sure, we always welcome contributions of any kind. You can post a blog or proposal doc changes at https://github.com/oVirt/ovirt-site Note the feature page: https://ovirt.org/develop/release-management/features/network/multiple-gatew... On Thu, May 10, 2018 at 7:19 AM, Justin Zygmont <jzygmont@proofpoint.com> wrote:
I see, thanks. Maybe I could help add that scenario to the docs for you?
*From:* Edward Haas [mailto:ehaas@redhat.com] *Sent:* Wednesday, May 9, 2018 2:26 PM
*To:* Justin Zygmont <jzygmont@proofpoint.com> *Cc:* users@ovirt.org *Subject:* Re: [ovirt-users] routing
On Mon, May 7, 2018 at 7:50 AM, Justin Zygmont <jzygmont@proofpoint.com> wrote:
Thanks for the reply,
Ok I see what you’re saying, its just confusing because there are several places that mention the gateways and none of them are clear on what they’re doing.
For example, under Cluster > Networks > Manage Networks, default route is only selectable for 1 network, yet in each network you create there is still the option of choosing a IP address and gateway.
On the host there are multiple routing tables, the default main one contains the default route of the host. Each defined network also maintains its own routing table, for traffic that it generated or is destined to it (in case the network has an IP).
So these are not the same things.
Even if I don’t put in any IP or gateway for a tagged vlan, it still depends of the management gateway to forward to the router. I thought I should be able to lose the management network and still have all the tagged vlans working?
Setting an IP on a network is useful if you need the *host* to communicate with some remote on an IP level. If you need VM communication, then an IP on a host network is not needed. The vnics are connected through a bridge, not through a router. So traffic from a VM is not passing through the L3 stack of the host and its routing entries on the host do not effect that traffic.
*From:* Edward Haas [mailto:ehaas@redhat.com] *Sent:* Sunday, May 6, 2018 7:34 AM *To:* Justin Zygmont <jzygmont@proofpoint.com> *Cc:* users@ovirt.org *Subject:* Re: [ovirt-users] routing
Not sure if I understand what you are asking here, but the need for a gateway per network has emerged from the need to support other host networks (not VM networks) beside the management one.
As an example, migration and storage networks can be defined, each passing dedicated traffic (one for storage communication and another for VM migration traffic), they may need to pass through different gateways.
So the management network can be accessed using gateway A, storage using B and migration using C. A will usually be set on a host level as the host default gateway, and the others will be set for the individual networks.
Otherwise, how would you expect storage to use a different router (than the management one) in the network?
Thanks,
Edy.
On Thu, May 3, 2018 at 1:08 AM, Justin Zygmont <jzygmont@proofpoint.com> wrote:
I don’t understand why you would want this unless the ovirtnode itself was actually the router, wouldn’t you want to only have an IP on the management network, and leave the rest of the VLANS blank so they depend on the router to route the traffic:
NIC1 -> ovirt-mgmt - gateway set
NIC2 -> VLAN3, VLAN4, etc…
https://www.ovirt.org/documentation/admin-guide/chap-Logical_Networks/ <https://urldefense.proofpoint.com/v2/url?u=https-3A__www.ovirt.org_documentation_admin-2Dguide_chap-2DLogical-5FNetworks_&d=DwMFaQ&c=Vxt5e0Osvvt2gflwSlsJ5DmPGcPvTRKLJyp031rXjhg&r=FiPhL0Cl1ymZlnTyAIIL75tE4L0reHcDdD-7wUtUGHA&m=lvMQTxxtMmO0n6usZZCFu7YpsCTkH0c0sLWerugBDGo&s=MDRHWiynqsCFNQ5_p0hyRdgEgBE8A9n3XCv7Ml8_HdU&e=>
*Viewing or Editing the Gateway for a Logical Network*
Users can define the gateway, along with the IP address and subnet mask, for a logical network. This is necessary when multiple networks exist on a host and traffic should be routed through the specified network, rather than the default gateway.
If multiple networks exist on a host and the gateways are not defined, return traffic will be routed through the default gateway, which may not reach the intended destination. This would result in users being unable to ping the host.
oVirt handles multiple gateways automatically whenever an interface goes up or down.
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users <https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.ovirt.org_mailman_listinfo_users&d=DwMFaQ&c=Vxt5e0Osvvt2gflwSlsJ5DmPGcPvTRKLJyp031rXjhg&r=FiPhL0Cl1ymZlnTyAIIL75tE4L0reHcDdD-7wUtUGHA&m=lvMQTxxtMmO0n6usZZCFu7YpsCTkH0c0sLWerugBDGo&s=3AoaP23_BKDL6oJS92yzlJaVu_jOwJTm8d1fL4HmRug&e=>
participants (2)
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Edward Haas -
Justin Zygmont