Unfortunately no. On Mon, Sep 28, 2020 at 8:50 AM Eugene Grosbein <[email protected]> wrote:
> 28.09.2020 17:12, James Bensley wrote: > > > On Mon, 28 Sep 2020 at 07:35, Eugene Grosbein <[email protected]> > wrote: > >> One of my 7201 routers has four GigabitEthernet interfaces but uses > only two, > >> one for IP uplink and another as client-sided downlink with multiple > >> sub-interfaces named like GigabitEthernet0/1.10 (encapsulation dot1Q). > >> > >> It need reconfiguration to use 2x1G port-channles. I already did such > reconfiguration > >> for same 7201 router with small number of sub-interfaces and know this > is doable > >> changing sub-interfaces from GigabitEthernet0/1.N to Port-channel1.N > >> > >> This time the router has about 800 sub-interfaces. I can do some > scripting > >> to prepare incremental configuration removing/re-creating > sub-interfaces, > >> but I presume high CPU load for router while reconfiguring, long > procedure time > >> and notable service degradation or even interruption. > >> > >> Is there same another, more lightweight way to mass-rename > sub-interfaces > >> while switching from single parent interface to Port-channel? > > > > Hi Eugene, > > > > If you don't want to do this over a series of incremental changes then > > you can make one "big bang" change by taking a copy of the running > > configuration, making all the changes to that, and uploading it to the > > router as a replacement start-up config file, then just reboot the > > router to apply the config in one action. However, this approach is > > risky, you need to test that new full configuration file (confirm that > > the change only relate to the interface renaming, and that there are > > no mistakes, typos, wrong VLAN numbers etc.), which is quite tricky. > > > > If you've ever wanted a pet project to get you into some network > > automation and programming stuff this sounds like an ideal project to > > me. You can definitely do this with Python tools like NAPALM and > > Nornir. Then you can automate the changes and automate the testing of > > the changes, and the rollback if required, in either multiple stages > > or as one giant change; whatever suits your circumstances best. > > I've already wrote my script using AWK, it took moderate amount of time > to write and debug; it resulted in less than 50 lines. For each > sub-interface > it removes all "ip route" commands referring to it (if any) then removes > the interface, > then adds it back with new name, then re-adds removed routes changing > interface name. > > It's quick-n-dirty but works and is fine for one-time job. > > My question was if IOS has some better way to rename sub-interfaces I > could be unaware of. > > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
