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Wan Interface

May 18th, 2009

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How can I simulate a wide area network serial connection using two 1721 Cisco routers?

I have two 1721 modular cisco routers, with Cisco T1 DSU/CSU WAN Interface Cards. Is there a way that I can simulate a back to back connection like it is often done with 2500 series routers and dte/dce cables?

Yep.. create a T1 crossover cable.

The wiring is:

1 — 4
2 — 5
4 — 1
5 — 2

Works like a champ! Always keep one in the lab! 😀

Find Wan Interface On eBay Below:

NEW Cisco VWIC2 1MFT G703 Single Port Voice Wan Interface Card JMW
NEW Cisco VWIC2 1MFT G703 Single Port Voice Wan Interface Card JMW
$95.00
VWIC2 1MFT T1 E1 Voice WAN Interface Card Cisco Tested
VWIC2 1MFT T1 E1 Voice WAN Interface Card Cisco Tested
$54.26
Cisco WIC 1ENET Single Port Ethernet Wan Interface Card 800 09311 03 A0 6Mth wty
Cisco WIC 1ENET Single Port Ethernet Wan Interface Card 800 09311 03 A0 6Mth wty
$50.21
NEW GENUINE Cisco HWIC 4T1 E1 Interface Card Expansion 1YearWarranty
NEW GENUINE Cisco HWIC 4T1 E1 Interface Card Expansion 1YearWarranty
$999.00
NEW SEALED GENUINE Cisco VWIC3 1MFT T1 E1 GEN 3 Card 1YearWarranty
NEW SEALED GENUINE Cisco VWIC3 1MFT T1 E1 GEN 3 Card 1YearWarranty
$649.00
NEW SEALED GENUINE Cisco VWIC3 4MFT T1 E1 GEN 3 Card 1YearWarranty
NEW SEALED GENUINE Cisco VWIC3 4MFT T1 E1 GEN 3 Card 1YearWarranty
$1,395.00
Brand New HWIC 2FE Cisco Router High Speed WAN Interface Module Fast Ship
Brand New HWIC 2FE Cisco Router High Speed WAN Interface Module Fast Ship
$813.00
Brand New EHWIC 1GE SFP CU Cisco High Speed WAN Interface Card Fast Ship
Brand New EHWIC 1GE SFP CU Cisco High Speed WAN Interface Card Fast Ship
$409.00
Cisco HWIC 1GE SFP High Speed Wan Interface Card
Cisco HWIC 1GE SFP High Speed Wan Interface Card
$170.00
USED High Speed WAN Interface Card Tested Cisco HWIC 1CE1T1 PRI
USED High Speed WAN Interface Card Tested Cisco HWIC 1CE1T1 PRI
$419.89
NEW Cisco EHWIC 1GE SFP CU Enhanced High Speed WAN Interface Card
NEW Cisco EHWIC 1GE SFP CU Enhanced High Speed WAN Interface Card
$275.00
Cisco 2800 3800 Series 2 Port Fast Ethernet Card Lifetime Warranty HWIC 2FE
Cisco 2800 3800 Series 2 Port Fast Ethernet Card Lifetime Warranty HWIC 2FE
$170.21
Cisco HWIC 1GE SFP High Speed Wan Interface Card
Cisco HWIC 1GE SFP High Speed Wan Interface Card
$245.00
New in Box Cisco VWIC3 2MFT T1 E1 2 Port T1 E1 Multiflex Trunk Voice 3rd Gen
New in Box Cisco VWIC3 2MFT T1 E1 2 Port T1 E1 Multiflex Trunk Voice 3rd Gen
$185.00
FIBERXON FTM 3101C L40G 1310nm 40km OC 3 LR 1 155Mbps SFP Monitor NEW
FIBERXON FTM 3101C L40G 1310nm 40km OC 3 LR 1 155Mbps SFP Monitor NEW
$16.11
FIBERXON FTM 3128C L15G 1310nm 15km Multi Rate IR 1 SFP Monitor NEW
FIBERXON FTM 3128C L15G 1310nm 15km Multi Rate IR 1 SFP Monitor NEW
$17.91
Cisco VWIC3 2MFT T1 E1
Cisco VWIC3 2MFT T1 E1
$125.00
NEW SEALED CISCO NIM 2CE1T1 PRI 2 Port Multiflex Trunk Voice Channelized
NEW SEALED CISCO NIM 2CE1T1 PRI 2 Port Multiflex Trunk Voice Channelized
$2,115.00
NEW SEALED CISCO NIM 4FXS Cisco Fourth Generation Network Interface Module
NEW SEALED CISCO NIM 4FXS Cisco Fourth Generation Network Interface Module
$1,297.00
Cisco WIC 1DSU T1 V2 WAN Interface Card for 1721 1751 1760 2600XM 3700
Cisco WIC 1DSU T1 V2 WAN Interface Card for 1721 1751 1760 2600XM 3700
$10.00
Mikrotik RouterBoard RB411AH 680MHz 64MB RouterOS Level 4 AP
Mikrotik RouterBoard RB411AH 680MHz 64MB RouterOS Level 4 AP
$35.00
Used Cisco HWIC D 9ESW POE Interface Card
Used Cisco HWIC D 9ESW POE Interface Card
$94.00
Cisco HWIC 2CE1T1 PRI 2 Port Channelized T1 E1  ISDN PRI WAN Interface
Cisco HWIC 2CE1T1 PRI 2 Port Channelized T1 E1 ISDN PRI WAN Interface
$260.00
CISCO HWIC 1DSU T1 Cisco 1 Port T1 Fractional T1 DSU CSU WAN Interface Card
CISCO HWIC 1DSU T1 Cisco 1 Port T1 Fractional T1 DSU CSU WAN Interface Card
$4.69
Cisco HWIC 2A S 2 Port Async Serial WAN Interface Module samedayshipping
Cisco HWIC 2A S 2 Port Async Serial WAN Interface Module samedayshipping
$164.12
Cisco WIC 1DSU T1 WAN Interface Card same day shipping
Cisco WIC 1DSU T1 WAN Interface Card same day shipping
$14.12
Cisco WIC 1DSU T1 V2 1 Port T1 DSU CSU WAN Interface Card
Cisco WIC 1DSU T1 V2 1 Port T1 DSU CSU WAN Interface Card
$4.69
Cisco NIM 1GE CU SFP 1 Port Dual Mode GE SFP WAN Network Interface Module HSS
Cisco NIM 1GE CU SFP 1 Port Dual Mode GE SFP WAN Network Interface Module HSS
$420.00
Cisco HWIC 4ESW 4 Port High Speed PoE WAN Interface Card TESTED
Cisco HWIC 4ESW 4 Port High Speed PoE WAN Interface Card TESTED
$26.69
LOT OF 18 Cisco WIC 1DSU T1 WAN INTERFACE CARD
LOT OF 18 Cisco WIC 1DSU T1 WAN INTERFACE CARD
$59.99
Cisco HWIC 4SHDSL 4 Pair GSHDSL High Speed WAN Interface Card with IMA Support
Cisco HWIC 4SHDSL 4 Pair GSHDSL High Speed WAN Interface Card with IMA Support
$95.00
Lot of 3 Cisco WIC 1DSU T1 WAN Interface Cards 800 03279 04B0
Lot of 3 Cisco WIC 1DSU T1 WAN Interface Cards 800 03279 04B0
$28.99
Cisco VWIC3 2MFT T1 E1 CISCO 2 Port Voice WAN Interface Card VWIC3
Cisco VWIC3 2MFT T1 E1 CISCO 2 Port Voice WAN Interface Card VWIC3
$19.95
Cisco WIC 1DSU T1 Interface Module 28 2376 03 800 03279 03A0
Cisco WIC 1DSU T1 Interface Module 28 2376 03 800 03279 03A0
$11.99
Cisco WIC 1AM 1 Port Analog Modem WAN Interface Card CN6ILE0AAA
Cisco WIC 1AM 1 Port Analog Modem WAN Interface Card CN6ILE0AAA
$7.99
Cisco EHWIC D 8ESG P Gigabit EtherSwitch EHWIC SWITCH 8 Ports 1 Gbps POE
Cisco EHWIC D 8ESG P Gigabit EtherSwitch EHWIC SWITCH 8 Ports 1 Gbps POE
$160.00
CISCO CISCO1921 K9 V04 Router w EHWIC 4ESG V01 gigabit WAN interface card
CISCO CISCO1921 K9 V04 Router w EHWIC 4ESG V01 gigabit WAN interface card
$119.95
Cisco HWIC 1DSU T1 EtherSwitch 10 100 High Speed T1 WAN Interface Card
Cisco HWIC 1DSU T1 EtherSwitch 10 100 High Speed T1 WAN Interface Card
$10.00
Cisco NM 2W with 2 WIC 1DSU T1 WAN Interface Card Network Module
Cisco NM 2W with 2 WIC 1DSU T1 WAN Interface Card Network Module
$14.69

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