Ethernet Switching
Ethernet Switching

ping time is so high

2 weeks ago

Hi,

I have the following network path:

Host-----------ex3500witch in VC------ex4500inVC(GateWay)-----------ex9200--------Firewall------Servers

 

Ping from host to server avg between 2-3ms. But from  host to  ex4500inVC(GateWay) about 34-45ms. Can I ask about why ping from host to GateWay is so high? What reason can be? Any ideas?

3 REPLIES 3
Ethernet Switching

Re: ping time is so high

2 weeks ago

Hi, 

 

By default, Juniper EX series switches are configured with ICMP rate limited.

 

https://kb.juniper.net/InfoCenter/index?page=content&id=KB28184&cat=SRX_SERIES&actp=LIST

 

........
If this worked for you please flag my post as an "Accepted Solution".

Best Regards,
Suresh Mudhireddy
Ethernet Switching

Re: ping time is so high

2 weeks ago

ICMP messages are considered low priority within Junos OS, so the routing platform will respond to and process other higher priority messages, such as routing updates, before processing the ICMP messages. The microkernel may introduce tens of milliseconds of processing delay to ICMP message handling. The delay is not uniform, meaning that some ICMP messages might be delayed while others may not be delayed.

ICMP ping latency in traffic generated for the device itself is not a recommended way of testing the bandwidth or integrity of the link.  Use other resources like transfering a file via FTP.

Ethernet Switching

Re: ping time is so high

2 weeks ago