Re: [vpp-dev] loopback admin status
Hi Matt, Sounds like exactly what we need. /neale De : Matthew Smith Date : mercredi 17 juillet 2019 à 14:52 À : "Neale Ranns (nranns)" Cc : vpp-dev Objet : Re: [vpp-dev] loopback admin status Hi Neale, Thanks for your reply. I noticed that there is a function for IPv6 named ip6_sw_interface_admin_up_down() in src/vnet/ip/ip6_forward.c which seems like it iterates the IPv6 addresses on an interface and adds or deletes the routes for each address if the interface is brought up or down. So maybe this is already handled for IPv6? If I'm understanding that correctly, do you think it would be appropriate to add a similar function for IPv4 and register it with VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION()? -Matt On Wed, Jul 17, 2019 at 3:33 AM Neale Ranns (nranns) mailto:nra...@cisco.com>> wrote: Hi Matt, I would tend to agree with you. The interface’s IP addresses should not be programmed in the FIB if the interface is down. /neale De : mailto:vpp-dev@lists.fd.io>> au nom de "Matthew Smith via Lists.Fd.Io<http://Lists.Fd.Io>" mailto:netgate@lists.fd.io>> Répondre à : "mgsm...@netgate.com<mailto:mgsm...@netgate.com>" mailto:mgsm...@netgate.com>> Date : mardi 16 juillet 2019 à 21:42 À : vpp-dev mailto:vpp-dev@lists.fd.io>> Cc : "vpp-dev@lists.fd.io<mailto:vpp-dev@lists.fd.io>" mailto:vpp-dev@lists.fd.io>> Objet : [vpp-dev] loopback admin status Hi, If I create a loopback interface and configure an IP address on it, I am able to ping that IP address from another host regardless of whether the admin status of the loopback is up or down. Is that intentional? I'm trying to figure out if this is something that can be "fixed" or if the current behavior is the way it's supposed to be. If I use a loopback as an endpoint for services and want to take the services offline temporarily, it would be convenient to be able to take the interface down and have the services effectively be disabled. -Matt -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#13516): https://lists.fd.io/g/vpp-dev/message/13516 Mute This Topic: https://lists.fd.io/mt/32495454/21656 Group Owner: vpp-dev+ow...@lists.fd.io Unsubscribe: https://lists.fd.io/g/vpp-dev/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
Re: [vpp-dev] loopback admin status
Hi Neale, Thanks for your reply. I noticed that there is a function for IPv6 named ip6_sw_interface_admin_up_down() in src/vnet/ip/ip6_forward.c which seems like it iterates the IPv6 addresses on an interface and adds or deletes the routes for each address if the interface is brought up or down. So maybe this is already handled for IPv6? If I'm understanding that correctly, do you think it would be appropriate to add a similar function for IPv4 and register it with VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION()? -Matt On Wed, Jul 17, 2019 at 3:33 AM Neale Ranns (nranns) wrote: > > > Hi Matt, > > > > I would tend to agree with you. The interface’s IP addresses should not be > programmed in the FIB if the interface is down. > > > > /neale > > > > > > *De : * au nom de "Matthew Smith via Lists.Fd.Io" > > *Répondre à : *"mgsm...@netgate.com" > *Date : *mardi 16 juillet 2019 à 21:42 > *À : *vpp-dev > *Cc : *"vpp-dev@lists.fd.io" > *Objet : *[vpp-dev] loopback admin status > > > > Hi, > > > > If I create a loopback interface and configure an IP address on it, I am > able to ping that IP address from another host regardless of whether the > admin status of the loopback is up or down. Is that intentional? I'm trying > to figure out if this is something that can be "fixed" or if the current > behavior is the way it's supposed to be. > > > > If I use a loopback as an endpoint for services and want to take the > services offline temporarily, it would be convenient to be able to take the > interface down and have the services effectively be disabled. > > > > -Matt > > > -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#13515): https://lists.fd.io/g/vpp-dev/message/13515 Mute This Topic: https://lists.fd.io/mt/32495454/21656 Group Owner: vpp-dev+ow...@lists.fd.io Unsubscribe: https://lists.fd.io/g/vpp-dev/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
Re: [vpp-dev] loopback admin status
Hi Matt, I would tend to agree with you. The interface’s IP addresses should not be programmed in the FIB if the interface is down. /neale De : au nom de "Matthew Smith via Lists.Fd.Io" Répondre à : "mgsm...@netgate.com" Date : mardi 16 juillet 2019 à 21:42 À : vpp-dev Cc : "vpp-dev@lists.fd.io" Objet : [vpp-dev] loopback admin status Hi, If I create a loopback interface and configure an IP address on it, I am able to ping that IP address from another host regardless of whether the admin status of the loopback is up or down. Is that intentional? I'm trying to figure out if this is something that can be "fixed" or if the current behavior is the way it's supposed to be. If I use a loopback as an endpoint for services and want to take the services offline temporarily, it would be convenient to be able to take the interface down and have the services effectively be disabled. -Matt -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#13513): https://lists.fd.io/g/vpp-dev/message/13513 Mute This Topic: https://lists.fd.io/mt/32495454/21656 Group Owner: vpp-dev+ow...@lists.fd.io Unsubscribe: https://lists.fd.io/g/vpp-dev/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
[vpp-dev] loopback admin status
Hi, If I create a loopback interface and configure an IP address on it, I am able to ping that IP address from another host regardless of whether the admin status of the loopback is up or down. Is that intentional? I'm trying to figure out if this is something that can be "fixed" or if the current behavior is the way it's supposed to be. If I use a loopback as an endpoint for services and want to take the services offline temporarily, it would be convenient to be able to take the interface down and have the services effectively be disabled. -Matt -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#13512): https://lists.fd.io/g/vpp-dev/message/13512 Mute This Topic: https://lists.fd.io/mt/32495454/21656 Group Owner: vpp-dev+ow...@lists.fd.io Unsubscribe: https://lists.fd.io/g/vpp-dev/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
