Hi,
MX204 has some limitations in terms of pps rates for smaller packet
sizes if inline-flow is configured compared to e.g. MX10003 not only but
also related to the pfe/fabric layout (no fabric in 204). So even if
they are the same pfe they might behave differently.
The details are not public, so you might want to reach out to your
partner/SE.
regards
Tobias
On 20.05.2021 12:39, Peter Sievers wrote:
Hi Leon,
both MX204 und MX10003/LC2103 use
eagle forwarding ASIC, LC2103 Linecard has 3xASIC,
MX204 has 1xASIC, WAN Output Rate for eagle
pfe is for 100G Interface ~110 MPPS.
Assumption is, that you got the traffic on the
MX10003 over more than one PFE/ASIC incoming.
BR,
.peter
On 20.05.21 11:49, Leon Kramer wrote:
Hello,
during an approximate 240 Mpps / 80 Gbps UDP DDOS attack to one target IP
we have experienced a massive and immediate packet loss at an MX204
router.
The attack was coming in through MX10003 and MX204. The MX204 was not
able
to forward more than 120 Mpps during the attack. The MX10003 forwarded
180
Mpps without any issue.
Both routers are running Juniper 18.4R2-S3. The MX204 has all 4 x 100
Gbps
interfaces active in use.
Any idea if 120 Mpps for Juniper MX204 is already the hardware
limitation?
This would equal to only roughly 41 Gbps of the attacks packet size of 43
bytes. We are certain that no policer or firewall filter lead to the
packet
drops.
Anyone has a recommendation what could be done to increase performance?
Kind Regards
Leon Kramer
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