[j-nsp] 3750 and 4200

[snort bsd]

hi all:

i have a cisco 3750 fastethernet switch connecting to a juniper 4200, with portchannel on cisco side and aggregated interface juniper side. the cisco side shows as "connected" but juniper side remain down. could anyone give me some ideas? no lacp activated on both side.

for cisco:

cisco-3750#sh int fast1/0/9
FastEthernet1/0/9 is up, line protocol is up (connected)
  Hardware is Fast Ethernet, address is 0018.b99f.5d8b (bia 0018.b99f.5d8b)
  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec, 
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set

cisco-3750#sh interfaces por10 
Port-channel10 is up, line protocol is up (connected)
  Hardware is EtherChannel, address is 0018.b99f.5d8c (bia 0018.b99f.5d8c)
  MTU 1500 bytes, BW 200000 Kbit, DLY 100 usec, 
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Full-duplex, 100Mb/s, link type is auto, media type is unknown
  input flow-control is off, output flow-control is unsupported 
  Members in this channel: Fa1/0/9 Fa1/0/10 


interface Port-channel10
 switchport access vlan 100
 switchport mode access

interface FastEthernet1/0/9
 switchport access vlan 100
 switchport mode access
 switchport nonegotiate
 channel-group 10 mode on


for juniper:

user at 4200-1# run show interfaces terse ge-0/0/9    
Interface               Admin Link Proto    Local                 Remote
ge-0/0/9                up    down
ge-0/0/9.0              up    down aenet    --> ae1.0

user at 4200-1# run show interfaces ae1 terse 
Interface               Admin Link Proto    Local                 Remote
ae1                     up    down
ae1.0                   up    down eth-switch


user at 4200-1# show interfaces ge-0/0/9    
ether-options {
    no-auto-negotiation;
    link-mode full-duplex;
    speed {
        100m;
    }
    802.3ad ae1;
}

user at 4200-1# show interfaces ae1 

ae1 {
    aggregated-ether-options {
        minimum-links 1;
        link-speed 100m;
    }
    unit 0 {
        family ethernet-switching {
            port-mode access;
        }
    }
}


_dave