Neviem ci tu je neikto, kto sa do tohot vyzna, ale ako je to s port-channelmi, ked mate v Po napr. 2x 1G linky, tak sa to nezratava ? Nie je tam tym padom ako keby navonok 2G linka, ktora je vsak fyzicky rozdelena na dva gigove ?
Nam to takto vysvetloval doktorand este v skole, ale nezda sa mi to. Lebo ked sa konfiguruje port-channel tak speed sa dava vzdy rovnaky ako je na linke. Napr. mam gigovu linku, dam tam speed 1000 a este jednu taku istu dam do port channelu. Lenze aj na port channel sa daca speed 1000. Takze ono to ajtak nepojde viac ako 1g cez port channel, aj ked su tam dve gigove linky, ze ?
Cisco port-channel
Re: Cisco port-channel
Bud ten traffic delis medzi dve linky alebo je druha zalozna, ci nie?
-
t0m4s3
Admin
- Príspevky: 18096
- Registrovaný: 14 jún 2004, 18:35
- Bydlisko: Martin SR, Brno CZ
- Kontaktovať používateľa:
Re: Cisco port-channel
Celkova kapacita portu bude sucet kapacit jednotlivych portov. Traffic sa posiela round-robin systemom, takze by mali byt porty vytazene priblizne rovnako (cim vacsi pocet roznych L2 spojeni, tym lepsie distribuovane, viz. 2 priklady)
Kód: Vybrať všetko
Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
1 Po1(SU) - Gi1/0/2(P) Gi2/0/2(P)
2 Po2(SU) - Gi1/0/3(P) Gi2/0/3(P)
xxx#sh int Gi1/0/3 | i BW|rate
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
Queueing strategy: fifo
5 minute input rate 2000 bits/sec, 1 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
xxx#sh int Gi2/0/3 | i BW|rate
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
Queueing strategy: fifo
5 minute input rate 10206000 bits/sec, 1248 packets/sec
5 minute output rate 10210000 bits/sec, 1250 packets/sec
xxx#sh int Port-channel2 | i rate|link
Full-duplex, 1000Mb/s, link type is auto, media type is unknown
MTU 1500 bytes, BW 2000000 Kbit, DLY 10 usec,
Queueing strategy: fifo
5 minute input rate 10408000 bits/sec, 1273 packets/sec
5 minute output rate 10411000 bits/sec, 1275 packets/sec
xxx#show etherchannel load-balance
EtherChannel Load-Balancing Configuration:
src-mac
Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
1 Po1(SU) PAgP Gi5/1(P) Gi5/2(P)
yyy#sh int po1 | i rate|BW
MTU 1500 bytes, BW 2000000 Kbit, DLY 10 usec,
Queueing strategy: fifo
5 minute input rate 228000 bits/sec, 73 packets/sec
5 minute output rate 1225000 bits/sec, 284 packets/sec
yyy#sh int gi5/1 | i rate|BW
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
Queueing strategy: fifo
5 minute input rate 206000 bits/sec, 59 packets/sec
5 minute output rate 631000 bits/sec, 186 packets/sec
yyy#sh int gi5/2 | i rate|BW
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
Queueing strategy: fifo
5 minute input rate 25000 bits/sec, 14 packets/sec
5 minute output rate 578000 bits/sec, 99 packets/sec