See juniper interface MTU is set to max 16000 bytes. but when I ping I can
only get 9584 bytes through to the other side of the link. This mx960 is
linked to another mx960, but Ciena 6500 dwdm is in between the mx960's.
Is there any reason why I should be concerned that currently Ciena tells us
that they only support 9600 byte MTU and that I have 16000 set on my MX960's
?
Is there an issue that could arise with this scenario ?
Currently ospf and ldp are neighboring fine and advertising routes and
labels
Ciena TAC mentioned that future upgrades may enable larger mtu's.
agould@960> show arp interface ae0.0
MAC Address Address Name Interface
Flags
d0:07:ca:zz:yy:xx 10.101.129.13 10.101.129.13 ae0.0
none
agould@960> show configuration interfaces ae0 | display set
set interfaces ae0 mtu 16000
set interfaces ae0 aggregated-ether-options lacp active
set interfaces ae0 unit 0 family inet address 10.101.129.14/30
set interfaces ae0 unit 0 family mpls
agould@960> show interfaces ae0.0 | grep mtu
Protocol inet, MTU: 15986
Protocol mpls, MTU: 15974, Maximum labels: 3
Protocol multiservice, MTU: Unlimited
agould@960> show lacp interfaces ae0
Aggregated interface: ae0
..
et-0/0/2 Current Fast periodic Collecting
distributing
agould@960> show interfaces et-0/0/2 | grep mtu
Link-level type: Ethernet, MTU: 16000, MRU: 16008, Speed: 100Gbps, BPDU
Error: None, Loop Detect PDU Error: None,
agould@960> ping 10.101.129.13 rapid size 9584
PING 10.101.129.13 (10.101.129.13): 9584 data bytes
!!!!!
--- 10.101.129.13 ping statistics ---
5 packets transmitted, 5 packets received, 0% packet loss
round-trip min/avg/max/stddev = 3.169/3.622/4.646/0.524 ms
agould@960> ping 10.101.129.13 rapid size 9585
PING 10.101.129.13 (10.101.129.13): 9585 data bytes
.....
--- 10.101.129.13 ping statistics ---
5 packets transmitted, 0 packets received, 100% packet loss
- Aaron
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