Why I have higher ping to the VLAN interface than to other local interfacesConnecting multiple links between switchesInter vlan can not ping each otherSonicWALL TZ215 : 2 LAN interfaces and 1 WANVLAN does not exist in NXOSRouting Between 2 different vlans but same subnetTrunk Ports only Allowing Native VLAN?Configure Routing on Catalyst 3650 with LAN BaseInter vlan routing not workingQuestion about Configuring HP 2920Cascading a switch interface to another switch
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Why I have higher ping to the VLAN interface than to other local interfaces
Connecting multiple links between switchesInter vlan can not ping each otherSonicWALL TZ215 : 2 LAN interfaces and 1 WANVLAN does not exist in NXOSRouting Between 2 different vlans but same subnetTrunk Ports only Allowing Native VLAN?Configure Routing on Catalyst 3650 with LAN BaseInter vlan routing not workingQuestion about Configuring HP 2920Cascading a switch interface to another switch
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I wouldn't call it an issue, but I'm curious.
On our Quanta switch we have a couple of VLANs and vlan interfaces accordingly.
Let's say I'm on a computer in VLAN 10, if I do:
ping 192.168.10.1
with 192.168.10.1 being the VLAN 10 interface on the switch which is set as gateway for the devices in that VLAN, I get responses in range from 1 ms to (sometimes) 28 ms, or even 50 ms etc.
If I ping any other device on the LAN I get responses in less than a millisecond.
Same goes if I go with
traceroute www.stackexchange.com
Here, from the first three hops I get highest delay from my VLAN interface:
gateway (192.168.10.1) 1.601 ms 2.401 ms 2.884 ms
192.168.xx.xx (192.168.xx.xx) 0.714 ms 0.710 ms 0.749 ms
xx.xx.xx.xx (xx.xx.xx.xx) 0.185 ms 0.224 ms 0.220 ms
Can you give me some ideas about that?
switch ping
asked 10 hours ago
excessiveexcessive
505 bronze badges
add a comment |
I wouldn't call it an issue, but I'm curious.
On our Quanta switch we have a couple of VLANs and vlan interfaces accordingly.
Let's say I'm on a computer in VLAN 10, if I do:
ping 192.168.10.1
with 192.168.10.1 being the VLAN 10 interface on the switch which is set as gateway for the devices in that VLAN, I get responses in range from 1 ms to (sometimes) 28 ms, or even 50 ms etc.
If I ping any other device on the LAN I get responses in less than a millisecond.
Same goes if I go with
traceroute www.stackexchange.com
Here, from the first three hops I get highest delay from my VLAN interface:
gateway (192.168.10.1) 1.601 ms 2.401 ms 2.884 ms
192.168.xx.xx (192.168.xx.xx) 0.714 ms 0.710 ms 0.749 ms
xx.xx.xx.xx (xx.xx.xx.xx) 0.185 ms 0.224 ms 0.220 ms
Can you give me some ideas about that?
switch ping
asked 10 hours ago
excessiveexcessive
505 bronze badges
1
The latency measured by ping is the ICMP latency (including processing of the ICMP messages). ICMP is very low on the priority list for a network device. The primary job of a router is to route, and of a switch to switch, and they get around to processing ICMP messages as they have time. You do not want a router or switch to drop traffic while it processes ICMP messages, so routing/switching take precedence, and ICMP is handled as a very low priority, which is why you may see timeouts from network devices because the reply can take too long from the perspective of the host sending the request.
– Ron Maupin♦
6 hours ago
add a comment |
I wouldn't call it an issue, but I'm curious.
On our Quanta switch we have a couple of VLANs and vlan interfaces accordingly.
Let's say I'm on a computer in VLAN 10, if I do:
ping 192.168.10.1
with 192.168.10.1 being the VLAN 10 interface on the switch which is set as gateway for the devices in that VLAN, I get responses in range from 1 ms to (sometimes) 28 ms, or even 50 ms etc.
If I ping any other device on the LAN I get responses in less than a millisecond.
Same goes if I go with
traceroute www.stackexchange.com
Here, from the first three hops I get highest delay from my VLAN interface:
gateway (192.168.10.1) 1.601 ms 2.401 ms 2.884 ms
192.168.xx.xx (192.168.xx.xx) 0.714 ms 0.710 ms 0.749 ms
xx.xx.xx.xx (xx.xx.xx.xx) 0.185 ms 0.224 ms 0.220 ms
Can you give me some ideas about that?
switch ping
asked 10 hours ago
excessiveexcessive
505 bronze badges
I wouldn't call it an issue, but I'm curious.
On our Quanta switch we have a couple of VLANs and vlan interfaces accordingly.
Let's say I'm on a computer in VLAN 10, if I do:
ping 192.168.10.1
with 192.168.10.1 being the VLAN 10 interface on the switch which is set as gateway for the devices in that VLAN, I get responses in range from 1 ms to (sometimes) 28 ms, or even 50 ms etc.
If I ping any other device on the LAN I get responses in less than a millisecond.
Same goes if I go with
traceroute www.stackexchange.com
Here, from the first three hops I get highest delay from my VLAN interface:
gateway (192.168.10.1) 1.601 ms 2.401 ms 2.884 ms
192.168.xx.xx (192.168.xx.xx) 0.714 ms 0.710 ms 0.749 ms
xx.xx.xx.xx (xx.xx.xx.xx) 0.185 ms 0.224 ms 0.220 ms
Can you give me some ideas about that?
switch ping
switch ping
asked 10 hours ago
excessiveexcessive
505 bronze badges
asked 10 hours ago
excessiveexcessive
505 bronze badges
asked 10 hours ago
excessiveexcessive
505 bronze badges
asked 10 hours ago
excessiveexcessive
505 bronze badges
asked 10 hours ago
excessiveexcessive
505 bronze badges
505 bronze badges
1
The latency measured by ping is the ICMP latency (including processing of the ICMP messages). ICMP is very low on the priority list for a network device. The primary job of a router is to route, and of a switch to switch, and they get around to processing ICMP messages as they have time. You do not want a router or switch to drop traffic while it processes ICMP messages, so routing/switching take precedence, and ICMP is handled as a very low priority, which is why you may see timeouts from network devices because the reply can take too long from the perspective of the host sending the request.
– Ron Maupin♦
6 hours ago
add a comment |
1
The latency measured by ping is the ICMP latency (including processing of the ICMP messages). ICMP is very low on the priority list for a network device. The primary job of a router is to route, and of a switch to switch, and they get around to processing ICMP messages as they have time. You do not want a router or switch to drop traffic while it processes ICMP messages, so routing/switching take precedence, and ICMP is handled as a very low priority, which is why you may see timeouts from network devices because the reply can take too long from the perspective of the host sending the request.
– Ron Maupin♦
6 hours ago
1
1
The latency measured by ping is the ICMP latency (including processing of the ICMP messages). ICMP is very low on the priority list for a network device. The primary job of a router is to route, and of a switch to switch, and they get around to processing ICMP messages as they have time. You do not want a router or switch to drop traffic while it processes ICMP messages, so routing/switching take precedence, and ICMP is handled as a very low priority, which is why you may see timeouts from network devices because the reply can take too long from the perspective of the host sending the request.
– Ron Maupin♦
6 hours ago
The latency measured by ping is the ICMP latency (including processing of the ICMP messages). ICMP is very low on the priority list for a network device. The primary job of a router is to route, and of a switch to switch, and they get around to processing ICMP messages as they have time. You do not want a router or switch to drop traffic while it processes ICMP messages, so routing/switching take precedence, and ICMP is handled as a very low priority, which is why you may see timeouts from network devices because the reply can take too long from the perspective of the host sending the request.
– Ron Maupin♦
6 hours ago
add a comment |
1 Answer
1
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A "L3 switch" will perform the actual packet forwarding (both L2 and L3) using dedicated hardware, but exceptional cases like sending a ping reply or a time exceeded message are normally handled in software by the switch's CPU.
Depending on how powerful and busy the CPU is and how the switch vendor decided to prioritize it's different tasks it may take the CPU some time to get around to processing your packet.
answered 8 hours ago
Peter GreenPeter Green
8,4532 gold badges12 silver badges30 bronze badges
add a comment |
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1 Answer
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1 Answer
1
active
oldest
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oldest
votes
active
oldest
votes
A "L3 switch" will perform the actual packet forwarding (both L2 and L3) using dedicated hardware, but exceptional cases like sending a ping reply or a time exceeded message are normally handled in software by the switch's CPU.
Depending on how powerful and busy the CPU is and how the switch vendor decided to prioritize it's different tasks it may take the CPU some time to get around to processing your packet.
answered 8 hours ago
Peter GreenPeter Green
8,4532 gold badges12 silver badges30 bronze badges
add a comment |
A "L3 switch" will perform the actual packet forwarding (both L2 and L3) using dedicated hardware, but exceptional cases like sending a ping reply or a time exceeded message are normally handled in software by the switch's CPU.
Depending on how powerful and busy the CPU is and how the switch vendor decided to prioritize it's different tasks it may take the CPU some time to get around to processing your packet.
answered 8 hours ago
Peter GreenPeter Green
8,4532 gold badges12 silver badges30 bronze badges
add a comment |
A "L3 switch" will perform the actual packet forwarding (both L2 and L3) using dedicated hardware, but exceptional cases like sending a ping reply or a time exceeded message are normally handled in software by the switch's CPU.
Depending on how powerful and busy the CPU is and how the switch vendor decided to prioritize it's different tasks it may take the CPU some time to get around to processing your packet.
answered 8 hours ago
Peter GreenPeter Green
8,4532 gold badges12 silver badges30 bronze badges
A "L3 switch" will perform the actual packet forwarding (both L2 and L3) using dedicated hardware, but exceptional cases like sending a ping reply or a time exceeded message are normally handled in software by the switch's CPU.
Depending on how powerful and busy the CPU is and how the switch vendor decided to prioritize it's different tasks it may take the CPU some time to get around to processing your packet.
answered 8 hours ago
Peter GreenPeter Green
8,4532 gold badges12 silver badges30 bronze badges
answered 8 hours ago
Peter GreenPeter Green
8,4532 gold badges12 silver badges30 bronze badges
answered 8 hours ago
Peter GreenPeter Green
8,4532 gold badges12 silver badges30 bronze badges
answered 8 hours ago
Peter GreenPeter Green
8,4532 gold badges12 silver badges30 bronze badges
8,4532 gold badges12 silver badges30 bronze badges
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The latency measured by ping is the ICMP latency (including processing of the ICMP messages). ICMP is very low on the priority list for a network device. The primary job of a router is to route, and of a switch to switch, and they get around to processing ICMP messages as they have time. You do not want a router or switch to drop traffic while it processes ICMP messages, so routing/switching take precedence, and ICMP is handled as a very low priority, which is why you may see timeouts from network devices because the reply can take too long from the perspective of the host sending the request.
– Ron Maupin♦
6 hours ago