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What's the role of Router/Switch name number?
Clash Royale CLAN TAG#URR8PPP
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I have a CGR1240 Router in Cisco Packet Tracer:
I have a question about the name of port.
I have no idea about the name number of a router/switch port.
why there is 2/* in CGR Router? such as FastEthernet2/3, GigabitEthernet2/1?
and in somewhere I also see the FastEthernet0/0/1, there is three number.
is there any rule of the Router/Switch port name?
cisco switch router
asked 1 hour ago
three-blocks
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up vote
2
down vote
favorite
I have a CGR1240 Router in Cisco Packet Tracer:
I have a question about the name of port.
I have no idea about the name number of a router/switch port.
why there is 2/* in CGR Router? such as FastEthernet2/3, GigabitEthernet2/1?
and in somewhere I also see the FastEthernet0/0/1, there is three number.
is there any rule of the Router/Switch port name?
cisco switch router
asked 1 hour ago
three-blocks
132
add a comment |Â
up vote
2
down vote
favorite
up vote
2
down vote
favorite
I have a CGR1240 Router in Cisco Packet Tracer:
I have a question about the name of port.
I have no idea about the name number of a router/switch port.
why there is 2/* in CGR Router? such as FastEthernet2/3, GigabitEthernet2/1?
and in somewhere I also see the FastEthernet0/0/1, there is three number.
is there any rule of the Router/Switch port name?
cisco switch router
asked 1 hour ago
three-blocks
132
I have a CGR1240 Router in Cisco Packet Tracer:
I have a question about the name of port.
I have no idea about the name number of a router/switch port.
why there is 2/* in CGR Router? such as FastEthernet2/3, GigabitEthernet2/1?
and in somewhere I also see the FastEthernet0/0/1, there is three number.
is there any rule of the Router/Switch port name?
cisco switch router
cisco switch router
asked 1 hour ago
three-blocks
132
asked 1 hour ago
three-blocks
132
asked 1 hour ago
three-blocks
132
asked 1 hour ago
three-blocks
132
asked 1 hour ago
three-blocks
132
132
add a comment |Â
add a comment |Â
1 Answer
1
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oldest
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up vote
2
down vote
accepted
Cisco usually names their interfaces following the (internal) structure of the given device.
Generally, this follows the syntax
<InterfaceType><Chassis>/<ModuleOrSlot>/<Port> or
<InterfaceType><Slot>/<Subslot>/<Port>
So that makes FastEthernet2/0
Type: Fast Ethernet (10 or 100Mbit)
Module: 2
Port: 0
Traditionally, "onboard" ports are in "Module 0". Hence the classic router models of the 2600, 2800, 2900 (and the 1800, 1900, 3800, 3900 and... and...) series came with 2 onboard ports:
FastEthernet 0/0 and FastEthernet 0/1 (for the 2600s)
GigabitEthernet0/0 and GigabitEthernet0/1 (for the 2800/2900 series)
They had (E)HWIC and NEM slots, and if you inserted e.g. a 2-port FastEthernet card, or a 2port serial card in Slot 1, these would become
FastEthernet1/0 and FastEthernet1/1
Serial1/0 and Serial1/1
Also, by some strange tradition, cisco switches start numbering their ports at "1", while Routers number their Ports from "0".
Now if your device happens to be of particular internal topology, it might very well be that all your ports reside on "Module 2".
Stackable/multichassis switches such as the 2960-S and X, or the 3750 series (and their younger siblings), and the VSS capable switches too, have three segments, where the first number represents the chassis, and some models have modules/slots for additional ports, such as a 4x10G Module-
GigabitEthernet1/0/5
GigabitEthernet2/0/5
TenGigabitEthernet1/1/2
TenGigabitEthernet2/1/2
This is all rather superficial - I think one could write books about Cisco interface numbering :-)
Also, the interface type designation (Ethernet, FastEthernet, GigabitEthernet, TenGigabitEthernet) usually shows the maximum speed the interface is capable of, even if it runs at a lower rate (e.g a 1G Interface at 100Mbit). Caution applies: the interface speed alone does not imply that the device's forwarding engine is capable of such throughputs, especially with the (older) low end routers.
answered 34 mins ago
Marc 'netztier' Luethi
2,474317
In addition, the Cisco CGR series typically has 4 slots, 0-3.
– Cown
16 mins ago
add a comment |Â
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
2
down vote
accepted
Cisco usually names their interfaces following the (internal) structure of the given device.
Generally, this follows the syntax
<InterfaceType><Chassis>/<ModuleOrSlot>/<Port> or
<InterfaceType><Slot>/<Subslot>/<Port>
So that makes FastEthernet2/0
Type: Fast Ethernet (10 or 100Mbit)
Module: 2
Port: 0
Traditionally, "onboard" ports are in "Module 0". Hence the classic router models of the 2600, 2800, 2900 (and the 1800, 1900, 3800, 3900 and... and...) series came with 2 onboard ports:
FastEthernet 0/0 and FastEthernet 0/1 (for the 2600s)
GigabitEthernet0/0 and GigabitEthernet0/1 (for the 2800/2900 series)
They had (E)HWIC and NEM slots, and if you inserted e.g. a 2-port FastEthernet card, or a 2port serial card in Slot 1, these would become
FastEthernet1/0 and FastEthernet1/1
Serial1/0 and Serial1/1
Also, by some strange tradition, cisco switches start numbering their ports at "1", while Routers number their Ports from "0".
Now if your device happens to be of particular internal topology, it might very well be that all your ports reside on "Module 2".
Stackable/multichassis switches such as the 2960-S and X, or the 3750 series (and their younger siblings), and the VSS capable switches too, have three segments, where the first number represents the chassis, and some models have modules/slots for additional ports, such as a 4x10G Module-
GigabitEthernet1/0/5
GigabitEthernet2/0/5
TenGigabitEthernet1/1/2
TenGigabitEthernet2/1/2
This is all rather superficial - I think one could write books about Cisco interface numbering :-)
Also, the interface type designation (Ethernet, FastEthernet, GigabitEthernet, TenGigabitEthernet) usually shows the maximum speed the interface is capable of, even if it runs at a lower rate (e.g a 1G Interface at 100Mbit). Caution applies: the interface speed alone does not imply that the device's forwarding engine is capable of such throughputs, especially with the (older) low end routers.
answered 34 mins ago
Marc 'netztier' Luethi
2,474317
In addition, the Cisco CGR series typically has 4 slots, 0-3.
– Cown
16 mins ago
add a comment |Â
up vote
2
down vote
accepted
Cisco usually names their interfaces following the (internal) structure of the given device.
Generally, this follows the syntax
<InterfaceType><Chassis>/<ModuleOrSlot>/<Port> or
<InterfaceType><Slot>/<Subslot>/<Port>
So that makes FastEthernet2/0
Type: Fast Ethernet (10 or 100Mbit)
Module: 2
Port: 0
Traditionally, "onboard" ports are in "Module 0". Hence the classic router models of the 2600, 2800, 2900 (and the 1800, 1900, 3800, 3900 and... and...) series came with 2 onboard ports:
FastEthernet 0/0 and FastEthernet 0/1 (for the 2600s)
GigabitEthernet0/0 and GigabitEthernet0/1 (for the 2800/2900 series)
They had (E)HWIC and NEM slots, and if you inserted e.g. a 2-port FastEthernet card, or a 2port serial card in Slot 1, these would become
FastEthernet1/0 and FastEthernet1/1
Serial1/0 and Serial1/1
Also, by some strange tradition, cisco switches start numbering their ports at "1", while Routers number their Ports from "0".
Now if your device happens to be of particular internal topology, it might very well be that all your ports reside on "Module 2".
Stackable/multichassis switches such as the 2960-S and X, or the 3750 series (and their younger siblings), and the VSS capable switches too, have three segments, where the first number represents the chassis, and some models have modules/slots for additional ports, such as a 4x10G Module-
GigabitEthernet1/0/5
GigabitEthernet2/0/5
TenGigabitEthernet1/1/2
TenGigabitEthernet2/1/2
This is all rather superficial - I think one could write books about Cisco interface numbering :-)
Also, the interface type designation (Ethernet, FastEthernet, GigabitEthernet, TenGigabitEthernet) usually shows the maximum speed the interface is capable of, even if it runs at a lower rate (e.g a 1G Interface at 100Mbit). Caution applies: the interface speed alone does not imply that the device's forwarding engine is capable of such throughputs, especially with the (older) low end routers.
answered 34 mins ago
Marc 'netztier' Luethi
2,474317
In addition, the Cisco CGR series typically has 4 slots, 0-3.
– Cown
16 mins ago
add a comment |Â
up vote
2
down vote
accepted
up vote
2
down vote
accepted
Cisco usually names their interfaces following the (internal) structure of the given device.
Generally, this follows the syntax
<InterfaceType><Chassis>/<ModuleOrSlot>/<Port> or
<InterfaceType><Slot>/<Subslot>/<Port>
So that makes FastEthernet2/0
Type: Fast Ethernet (10 or 100Mbit)
Module: 2
Port: 0
Traditionally, "onboard" ports are in "Module 0". Hence the classic router models of the 2600, 2800, 2900 (and the 1800, 1900, 3800, 3900 and... and...) series came with 2 onboard ports:
FastEthernet 0/0 and FastEthernet 0/1 (for the 2600s)
GigabitEthernet0/0 and GigabitEthernet0/1 (for the 2800/2900 series)
They had (E)HWIC and NEM slots, and if you inserted e.g. a 2-port FastEthernet card, or a 2port serial card in Slot 1, these would become
FastEthernet1/0 and FastEthernet1/1
Serial1/0 and Serial1/1
Also, by some strange tradition, cisco switches start numbering their ports at "1", while Routers number their Ports from "0".
Now if your device happens to be of particular internal topology, it might very well be that all your ports reside on "Module 2".
Stackable/multichassis switches such as the 2960-S and X, or the 3750 series (and their younger siblings), and the VSS capable switches too, have three segments, where the first number represents the chassis, and some models have modules/slots for additional ports, such as a 4x10G Module-
GigabitEthernet1/0/5
GigabitEthernet2/0/5
TenGigabitEthernet1/1/2
TenGigabitEthernet2/1/2
This is all rather superficial - I think one could write books about Cisco interface numbering :-)
Also, the interface type designation (Ethernet, FastEthernet, GigabitEthernet, TenGigabitEthernet) usually shows the maximum speed the interface is capable of, even if it runs at a lower rate (e.g a 1G Interface at 100Mbit). Caution applies: the interface speed alone does not imply that the device's forwarding engine is capable of such throughputs, especially with the (older) low end routers.
answered 34 mins ago
Marc 'netztier' Luethi
2,474317
Cisco usually names their interfaces following the (internal) structure of the given device.
Generally, this follows the syntax
<InterfaceType><Chassis>/<ModuleOrSlot>/<Port> or
<InterfaceType><Slot>/<Subslot>/<Port>
So that makes FastEthernet2/0
Type: Fast Ethernet (10 or 100Mbit)
Module: 2
Port: 0
Traditionally, "onboard" ports are in "Module 0". Hence the classic router models of the 2600, 2800, 2900 (and the 1800, 1900, 3800, 3900 and... and...) series came with 2 onboard ports:
FastEthernet 0/0 and FastEthernet 0/1 (for the 2600s)
GigabitEthernet0/0 and GigabitEthernet0/1 (for the 2800/2900 series)
They had (E)HWIC and NEM slots, and if you inserted e.g. a 2-port FastEthernet card, or a 2port serial card in Slot 1, these would become
FastEthernet1/0 and FastEthernet1/1
Serial1/0 and Serial1/1
Also, by some strange tradition, cisco switches start numbering their ports at "1", while Routers number their Ports from "0".
Now if your device happens to be of particular internal topology, it might very well be that all your ports reside on "Module 2".
Stackable/multichassis switches such as the 2960-S and X, or the 3750 series (and their younger siblings), and the VSS capable switches too, have three segments, where the first number represents the chassis, and some models have modules/slots for additional ports, such as a 4x10G Module-
GigabitEthernet1/0/5
GigabitEthernet2/0/5
TenGigabitEthernet1/1/2
TenGigabitEthernet2/1/2
This is all rather superficial - I think one could write books about Cisco interface numbering :-)
Also, the interface type designation (Ethernet, FastEthernet, GigabitEthernet, TenGigabitEthernet) usually shows the maximum speed the interface is capable of, even if it runs at a lower rate (e.g a 1G Interface at 100Mbit). Caution applies: the interface speed alone does not imply that the device's forwarding engine is capable of such throughputs, especially with the (older) low end routers.
answered 34 mins ago
Marc 'netztier' Luethi
2,474317
answered 34 mins ago
Marc 'netztier' Luethi
2,474317
answered 34 mins ago
Marc 'netztier' Luethi
2,474317
answered 34 mins ago
Marc 'netztier' Luethi
2,474317
2,474317
In addition, the Cisco CGR series typically has 4 slots, 0-3.
– Cown
16 mins ago
add a comment |Â
In addition, the Cisco CGR series typically has 4 slots, 0-3.
– Cown
16 mins ago
In addition, the Cisco CGR series typically has 4 slots, 0-3.
– Cown
16 mins ago
In addition, the Cisco CGR series typically has 4 slots, 0-3.
– Cown
16 mins ago
add a comment |Â
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