Cisco portchannel

Pozdrav.

Imam čudan "problem" koji mi se javlja na 6509 šasiji.
Naime HP blade mi je spojena na šasiju putem 16 linkova koji su s jedne strane spojeni na HP-ove switch-ove a s druge naravno na 6509.

Prva nepoznanica.
1 Po1(SU) LACP Gi1/25(P) Gi1/33(P) Gi2/25(P)
Gi2/33(P) Gi8/1(P) Gi8/9(D)
Gi9/1(P) Gi9/9(P)
1 Po1B(SU) LACP Gi1/41(P) Gi2/41(P) Gi8/17(P)
Gi8/25(P) Gi8/33(P) Gi9/17(P)
Gi9/25(P) Gi9/33(P)

Ja sam doživljavao portchannel tako da je 8 portova aktivno a 8 portova u "standbay-u".
Ali kako ovdje piše to nije tako (zanemarite Gi8/9) ovdje su svi aktivni.

Svi portovi su identično iskonfigurirani i svi su stavljeni u portchannel 1.

Pitanje. Zašto se stvorio Po1B(SU)???

Druga nepoznanica.

Ti portovi su u trunk-u. I propušteno je samo dva VLAN-a
Dodavao sam treći VLAN (na interfaceu po1) i onda mi se u logu pojavile sljedeće stvari:

Dec 24 11:38:24.125 CET: %EC-SP-5-CANNOT_BUNDLE_LACP: Gi1/41 is not compatible with aggregators in channel 1 and cannot attach to them (vlan mask is different)
Dec 24 11:38:24.221 CET: %EC-SP-5-CANNOT_BUNDLE_LACP: Gi2/41 is not compatible with aggregators in channel 1 and cannot attach to them (vlan mask is different)
Dec 24 11:38:25.493 CET: %EC-SP-5-CANNOT_BUNDLE_LACP: Gi8/17 is not compatible with aggregators in channel 1 and cannot attach to them (vlan mask is different)
Dec 24 11:38:24.610 CET: %EC-SP-5-CANNOT_BUNDLE_LACP: Gi8/25 is not compatible with aggregators in channel 1 and cannot attach to them (vlan mask is different)
Dec 24 11:38:25.213 CET: %EC-SPSTBY-5-CANNOT_BUNDLE_LACP: Gi1/41 is not compatible with aggregators in channel 1 and cannot attach to them (vlan mask is different)
Dec 24 11:38:25.217 CET: %EC-SPSTBY-5-CANNOT_BUNDLE_LACP: Gi2/41 is not compatible with aggregators in channel 1 and cannot attach to them (vlan mask is different)
Dec 24 11:38:25.225 CET: %EC-SPSTBY-5-CANNOT_BUNDLE_LACP: Gi8/17 is not compatible with aggregators in channel 1 and cannot attach to them (vlan mask is different)
Dec 24 11:38:25.229 CET: %EC-SPSTBY-5-CANNOT_BUNDLE_LACP: Gi8/25 is not compatible with aggregators in channel 1 and cannot attach to them (vlan mask is different)
Dec 24 11:38:24.682 CET: %EC-SP-5-CANNOT_BUNDLE_LACP: Gi8/33 is not compatible with aggregators in channel 1 and cannot attach to them (vlan mask is different)
Dec 24 11:38:24.834 CET: %EC-SP-5-CANNOT_BUNDLE_LACP: Gi9/17 is not compatible with aggregators in channel 1 and cannot attach to them (vlan mask is different)
Dec 24 11:38:25.233 CET: %EC-SPSTBY-5-CANNOT_BUNDLE_LACP: Gi8/33 is not compatible with aggregators in channel 1 and cannot attach to them (vlan mask is different)
Dec 24 11:38:25.237 CET: %EC-SPSTBY-5-CANNOT_BUNDLE_LACP: Gi9/17 is not compatible with aggregators in channel 1 and cannot attach to them (vlan mask is different)

Što je u jednu ruku i točno jer mi je od tog trećeg VLAN-a maska 27 a od ova prva dva 24.
Onda ponovno vratim na početnu konfiguraciju i propustim samo dva VLAN-a koji su i bili iskonfigurirani ali stvar se ponovno pojavljuje u logu.
Napomena. Jedan od ta dva VLAN-a koji su propušteni u portchannelu ima VLAN interface (layer3) dok drugi nema.

Pa eto ako nekome nije teško da mi u kratkim crtama malo pojasni stvar bio bih iznimno zahvalan.

Pozdrav

Na 6500 isto nemozes da imas vise od 8 portova u Port channelu (ko i na vecini switcheva) pa ce on sam ako ima vise portova od toga da proglasi ostale kao backup Po1B(SU)


Ovdje je problem vjerojatno sto imas u bunde 16 portova a ne 8 koliko bi trebao da imas, i onda ti radi samo prvih 8 a od drugih 8 je napravio Po1B..
i sada kada je dodavo konfu vjerojatno je dodao samo na Po1 a vjerojatno nije na Po1B pa javlja da ne moze zabundleat.

Dio koji javlja "vlan mask is different" nema veze sa subnetima, taj dio se odnosi na to da nije mogao dodati sve vlanove na port chanel tj da se razlikuje konfiguracija portova iako su u istom prividnom port channelu on ih nije skonfiugrirao identicno jer je prepolovio port-channel na A i B..

Probaj rucno dodati na Po1B sto ti fali ako ti bude radilo ok, ali svako je bolje rjesenje da razbijes to na 2 zasebna port-channela tako da nemas problema u buducnosti.

Potpis

ROCK"n"Roll

Potrvrdjujem, sto je Nino napisao, u port channel grupi mogu biti samo 8 portova, sa identicnim konfiguracijama, svako otstupanje, izazvace probleme, verujem da je jedino resenje, kao sto je i Nino rekao, da razbijes na 2 port grupe :), ne znam kakva je konfiguracija na HP, ali na Cisco switchu se to da namestiti za par minuta, ili ako imas neku lab opremu, pa na njima da testiras, da ne bi trpeo saobracaj iz produkcije

Potpis

CCNP Security, CCNA R&S, CCNA Security, CCNA Voice
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