Re: [c-nsp] show isis neighbors - system id shown
On Sun, 2 Feb 2020 at 17:22, Aaron Gould wrote: > is there a reason why ? I think you got a bunch of replies, but I'm not sure if the specific reason was addressed. TLV137 is part of LSP PDU and the neighbour is seen at one of the three possible Hello PDU, which does not yet contain TLV137. -- ++ytti ___ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
Re: [c-nsp] show isis neighbors - system id shown
Thanks y'all -Aaron ___ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
Re: [c-nsp] show isis neighbors - system id shown
>> is there a reason why ? > > Looks to me like you are pretty fast in repetitive show commands :) > > What actually may be happening here is that adj. comes up fast and at this > point your router does not yet have the dynamic name. After some time it > receives it from the neighbor via flooding in TLV 137 and then creates a > mapping hence in subsequent commands you see the name. > > Works as designed :) Flooding that TLV may take a bit of time as well as > your local system may not treat it as top important info. I've seen the same thing multiple times on Juniper and Huawei routers. I agree, this is working as intended. Steinar Haug, Nethelp consulting, sth...@nethelp.no ___ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
Re: [c-nsp] show isis neighbors - system id shown
On 2/Feb/20 17:22, Aaron Gould wrote: > funny, for a moment there it actually displayed the sys id of r1 instead of > the word "r1" > > > > is there a reason why ? Pretty normal when the adjacency comes up for the first time. A few moments later as everything settles down, the System ID's map back to the remote router's hostname. Mark. ___ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
Re: [c-nsp] show isis neighbors - system id shown
> is there a reason why ? Looks to me like you are pretty fast in repetitive show commands :) What actually may be happening here is that adj. comes up fast and at this point your router does not yet have the dynamic name. After some time it receives it from the neighbor via flooding in TLV 137 and then creates a mapping hence in subsequent commands you see the name. Works as designed :) Flooding that TLV may take a bit of time as well as your local system may not treat it as top important info. Ref: Original Henk's RFC 2763 later replaced by RFC 5301 Best, R. On Sun, Feb 2, 2020 at 4:22 PM Aaron Gould wrote: > funny, for a moment there it actually displayed the sys id of r1 instead of > the word "r1" > > > > is there a reason why ? > > > > r2#sh isis neighbors > > > > System Id Type Interface IP Address State Holdtime Circuit Id > > .. L1 Fa0/0 1.2.3.1 UP23 r2.01 > > .. L2 Fa0/0 1.2.3.1 UP24 r2.01 > > > > r2#sh isis neighbors > > > > System Id Type Interface IP Address State Holdtime Circuit Id > > r1 L1 Fa0/0 1.2.3.1 UP27 r2.01 > > r1 L2 Fa0/0 1.2.3.1 UP28 r2.01 > > r2#sh isis neighbors > > > > System Id Type Interface IP Address State Holdtime Circuit Id > > r1 L1 Fa0/0 1.2.3.1 UP23 r2.01 > > r1 L2 Fa0/0 1.2.3.1 UP24 r2.01 > > r2#sh isis neighbors > > > > System Id Type Interface IP Address State Holdtime Circuit Id > > r1 L1 Fa0/0 1.2.3.1 UP22 r2.01 > > r1 L2 Fa0/0 1.2.3.1 UP23 r2.01 > > r2#sh isis neighbors > > > > System Id Type Interface IP Address State Holdtime Circuit Id > > r1 L1 Fa0/0 1.2.3.1 UP21 r2.01 > > r1 L2 Fa0/0 1.2.3.1 UP22 r2.01 > > r2# > > > > -Aaron > > > > ___ > cisco-nsp mailing list cisco-nsp@puck.nether.net > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ > ___ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
[c-nsp] show isis neighbors - system id shown
funny, for a moment there it actually displayed the sys id of r1 instead of the word "r1" is there a reason why ? r2#sh isis neighbors System Id Type Interface IP Address State Holdtime Circuit Id .. L1 Fa0/0 1.2.3.1 UP23 r2.01 .. L2 Fa0/0 1.2.3.1 UP24 r2.01 r2#sh isis neighbors System Id Type Interface IP Address State Holdtime Circuit Id r1 L1 Fa0/0 1.2.3.1 UP27 r2.01 r1 L2 Fa0/0 1.2.3.1 UP28 r2.01 r2#sh isis neighbors System Id Type Interface IP Address State Holdtime Circuit Id r1 L1 Fa0/0 1.2.3.1 UP23 r2.01 r1 L2 Fa0/0 1.2.3.1 UP24 r2.01 r2#sh isis neighbors System Id Type Interface IP Address State Holdtime Circuit Id r1 L1 Fa0/0 1.2.3.1 UP22 r2.01 r1 L2 Fa0/0 1.2.3.1 UP23 r2.01 r2#sh isis neighbors System Id Type Interface IP Address State Holdtime Circuit Id r1 L1 Fa0/0 1.2.3.1 UP21 r2.01 r1 L2 Fa0/0 1.2.3.1 UP22 r2.01 r2# -Aaron ___ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
