Hello,
we are using qfx5120-48y with Junos 19.4R2-S1.2
We got some Auto-negotiation issues with some switches. At Juniper side, Auto-neg is enabled on all Interfaces so on cisco. But the 1G SFP Link does not come up at Cisco side.
At Juniper i see the Link ist up but at cisco side not. If i change at cisco side to no-auto-negotiation the link comes up.
Config Juniper:
traceoptions {
flag all;
}
speed auto;
##
## 'ether-options' was inherited from group 'AUTO-NEG'
##
ether-options {
##
## 'auto-negotiation' was inherited from group 'AUTO-NEG'
##
auto-negotiation;
}
unit 0 {
family ethernet-switching {
interface-mode access;
vlan {
members 926;
}
}
}
{master:0}[edit]
show interfaces ge-0/0/5
Physical interface: ge-0/0/5, Enabled, Physical link is Up
Interface index: 672, SNMP ifIndex: 576
Link-level type: Ethernet, MTU: 1514, LAN-PHY mode, Speed: 1000mbps, BPDU Error: None, Loop Detect PDU Error: None, Ethernet-Switching Error: None, MAC-REWRITE Error: None, Loopback: Disabled,
Source filtering: Disabled, Flow control: Disabled, Auto-negotiation: Enabled, Remote fault: Online, Media type: Fiber, IEEE 802.3az Energy Efficient Ethernet: Disabled, Auto-MDIX: Enabled
Device flags : Present Running
Config at Cisco:
sh running-config interface gigabitEthernet 4/26
Building configuration...
Current configuration : 89 bytes
!
interface GigabitEthernet4/26
switchport access vlan 926
switchport mode access
end
sh interfaces gigabitEthernet 4/26
GigabitEthernet4/26 is down, line protocol is down (notconnect)
Hardware is Gigabit Ethernet Port, address is 0021.d824.3559 (bia 0021.d824.3559)