Subject says it all—Internet downloads are fast at 120+Mbps when I connect a system directly to the SRX, but are slow at 20Mbps when I connect the same system (and other systems) and the SRX to the switch. Obviously there’s some incompatibility with the switch and the SRX, but I don’t know how to pinpoint and resolve this.
> show version Hostname: srx300 Model: srx300 Junos: 15.1X49-D45 JUNOS Software Release [15.1X49-D45]> show interfaces ge-0/0/1 extensive Physical interface: ge-0/0/1, Enabled, Physical link is Up Interface index: 136, SNMP ifIndex: 509, Generation: 139 Link-level type: Ethernet, MTU: 1514, LAN-PHY mode, Link-mode: Full-duplex, Speed: 100mbps, BPDU Error: None, MAC-REWRITE Error: None, Loopback: Disabled, Source filtering: Disabled, Flow control: Disabled, Auto-negotiation: Enabled, Remote fault: Online Device flags : Present Running Interface flags: SNMP-Traps Internal: 0x0 Link flags : None CoS queues : 8 supported, 8 maximum usable queues Hold-times : Up 0 ms, Down 0 ms Current address: ec:13:db:d9:6c:01, Hardware address: ec:13:db:d9:6c:01 Last flapped : 2016-12-07 00:24:00 MST (22:45:46 ago) Statistics last cleared: 2016-12-06 23:23:53 MST (23:45:53 ago) Traffic statistics: Input bytes : 2422255344 108936 bps Output bytes : 13097241379 234064 bps Input packets: 7719003 88 pps Output packets: 10939869 82 pps Input errors: Errors: 1, Drops: 0, Framing errors: 1, Runts: 0, Policed discards: 1039, L3 incompletes: 0, L2 channel errors: 0, L2 mismatch timeouts: 0, FIFO errors: 0, Resource errors: 0 Output errors: Carrier transitions: 8, Errors: 0, Drops: 0, Collisions: 0, Aged packets: 0, FIFO errors: 0, HS link CRC errors: 0, MTU errors: 0, Resource errors: 0 Egress queues: 8 supported, 4 in use Queue counters: Queued packets Transmitted packets Dropped packets 0 10937518 10937518 0 1 0 0 0 2 0 0 0 3 4488 4488 0 Queue number: Mapped forwarding classes 0 best-effort 1 expedited-forwarding 2 assured-forwarding 3 network-control Active alarms : None Active defects : None MAC statistics: Receive Transmit Total octets 2587006103 12977681914 Total packets 7772305 10719634 Unicast packets 7285080 10716586 Broadcast packets 186578 3048 Multicast packets 300647 0 CRC/Align errors 1 0 FIFO errors 0 0 MAC control frames 0 0 MAC pause frames 0 0 Oversized frames 0 Jabber frames 0 Fragment frames 0 VLAN tagged frames 0 Code violations 0 Filter statistics: Input packet count 0 Input packet rejects 0 Input DA rejects 0 Input SA rejects 0 Output packet count 0 Output packet pad count 0 Output packet error count 0 CAM destination filters: 2, CAM source filters: 0 Autonegotiation information: Negotiation status: Complete Link partner: Link mode: Full-duplex, Flow control: None, Remote fault: OK Local resolution: Flow control: None, Remote fault: Link OK Packet Forwarding Engine configuration: Destination slot: 0 CoS information: Direction : Output CoS transmit queue Bandwidth Buffer Priority Limit % bps % usec 0 best-effort 95 950000000 95 0 low none 3 network-control 5 50000000 5 0 low none Interface transmit statistics: Disabled Logical interface ge-0/0/1.0 (Index 71) (SNMP ifIndex 515) (Generation 136) Flags: Up SNMP-Traps 0x0 Encapsulation: ENET2 Traffic statistics: Input bytes : 2422252764 Output bytes : 13096598625 Input packets: 7719009 Output packets: 10939898 Local statistics: Input bytes : 9047602 Output bytes : 12549025 Input packets: 91223 Output packets: 29277 Transit statistics: Input bytes : 2413205162 106640 bps Output bytes : 13084049600 231416 bps Input packets: 7627786 85 pps Output packets: 10910621 81 pps Security: Zone: Internal Allowed host-inbound traffic : bfd bgp dvmrp igmp ldp msdp nhrp ospf pgm pim rip router-discovery rsvp sap vrrp dhcp http https ping ssh telnet Flow Statistics : Flow Input statistics : Self packets : 36414 ICMP packets : 957 VPN packets : 0 Multicast packets : 89447 Bytes permitted by policy : 2301144984 Connections established : 132135 Flow Output statistics: Multicast packets : 0 Bytes permitted by policy : 13098798455 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: 84297 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: 3270 Security association not active: 0 TCP sequence number out of window: 0 Syn-attack protection: 0 User authentication errors: 0 Protocol inet, MTU: 1500, Generation: 149, Route table: 0 Flags: Sendbcast-pkt-to-re Addresses, Flags: Is-Preferred Is-Primary ... Generation: 154