Wouldn't the SRX1500 reth interface recieving traffic from other devices on that network confirm that the underlying L2 connectivity is good? Same with the vSRX, any of the other devices it can communicate with.
I checked the reth interface on the 1500 ...
derek@SRX1500-FW-01> show interfaces reth1 extensive
Physical interface: reth1, Enabled, Physical link is Up
Interface index: 129, SNMP ifIndex: 581, Generation: 132
Description: Trust Interfaces - xe-0/0/17 & xe-7/0/17
Link-level type: Ethernet, MTU: 1518, Speed: 10Gbps, BPDU Error: None, Ethernet-Switching Error: None, MAC-REWRITE Error: None, Loopback: Disabled, Source filtering: Disabled, Flow control: Disabled, Minimum links needed: 1,
Minimum bandwidth needed: 1bps
Device flags : Present Running
Interface flags: SNMP-Traps Internal: 0x4000
Current address: 00:10:db:ff:10:01, Hardware address: 00:10:db:ff:10:01
Last flapped : 2018-09-05 13:53:06 UTC (50w0d 06:24 ago)
Statistics last cleared: Never
Traffic statistics:
Input bytes : 10290601298180 3962784 bps
Output bytes : 19833025646885 7397984 bps
Input packets: 22992581469 1122 pps
Output packets: 25814933197 1200 pps
Dropped traffic statistics due to STP State:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
MAC statistics: Receive Transmit
Broadcast packets 0 0
Multicast packets 0 0
Input errors:
Errors: 0, Drops: 0, Framing errors: 0, Runts: 0, Giants: 0, Policed discards: 0, Resource errors: 0
Output errors:
Carrier transitions: 0, Errors: 0, Drops: 0, MTU errors: 0, Resource errors: 0
Ingress queues: 8 supported, 4 in use
Queue counters: Queued packets Transmitted packets Dropped packets
0 0 0 0
1 0 0 0
2 0 0 0
3 0 0 0
Egress queues: 8 supported, 4 in use
Queue counters: Queued packets Transmitted packets Dropped packets
0 41763063 41763063 0
1 0 0 0
2 0 0 0
3 2230645 2230645 0
Queue number: Mapped forwarding classes
0 best-effort
1 expedited-forwarding
2 assured-forwarding
3 network-control
Logical interface reth1.48 (Index 70) (SNMP ifIndex 593) (Generation 171)
Flags: Up SNMP-Traps 0x4000 VLAN-Tag [ 0x8100.48 ] Encapsulation: ENET2
Statistics Packets pps Bytes bps
Bundle:
Input : 204809093 0 67079691724 536
Output: 581838493 0 198983752937 0
Adaptive Statistics:
Adaptive Adjusts: 0
Adaptive Scans : 0
Adaptive Updates: 0
Link:
xe-0/0/17.48
Input : 187715561 0 64908877270 264
Output: 581836782 0 198981945970 0
xe-7/0/17.48
Input : 17093532 0 2170814454 272
Output: 1906 0 1817001 0
Marker Statistics: Marker Rx Resp Tx Unknown Rx Illegal Rx
xe-0/0/17.48 0 0 0 0
xe-7/0/17.48 0 0 0 0
Security: Zone: internal-juniper
Allowed host-inbound traffic : https ping snmp ssh traceroute
Flow Statistics :
Flow Input statistics :
Self packets : 668399
ICMP packets : 2389843
VPN packets : 0
Multicast packets : 0
Bytes permitted by policy : 62661552343
Connections established : 4008625
Flow Output statistics:
Multicast packets : 0
Bytes permitted by policy : 198977390027
Flow error statistics (Packets dropped due to):
Address spoofing: 0
Authentication failed: 0
Incoming NAT errors: 0
Invalid zone received packet: 0
Multiple user authentications: 0
Multiple incoming NAT: 0
No parent for a gate: 0
No one interested in self packets: 0
No minor session: 0
No more sessions: 0
No NAT gate: 0
No route present: 1
No SA for incoming SPI: 0
No tunnel found: 0
No session for a gate: 0
No zone or NULL zone binding 0
Policy denied: 1224074
Security association not active: 0
TCP sequence number out of window: 3
Syn-attack protection: 0
User authentication errors: 0
Protocol inet, MTU: 1500
Max nh cache: 100000, New hold nh limit: 100000, Curr nh cnt: 13, Curr new hold cnt: 0, NH drop cnt: 0
Generation: 189, Route table: 6
Flags: None
Addresses, Flags: Is-Preferred Is-Primary
Destination: 10.2.48/24, Local: 10.2.48.1, Broadcast: 10.2.48.255, Generation: 166