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Unable to ping between router and routed port on L3 switch. Why?

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I've got an old Cisco 2811 connected to an old Cisco 4948 L3 Switch. I'm trying to teach myself a little more about L3 Switch implementation. All I'm trying to do at this point is get the router and the switch to pass data back and forth to one another via connected routes. I've not set up any VLAN interfaces on my switch at this point.

Anyway, here's what I've done so far on the L3 switch:
- configured g1/1 with no switchport command to make port a routed port
- configured g1/1 with ip address 10.1.5.1 255.255.255.252 command
- configured g/1/1 with no shutdown command
- enabled ip routing with the ip routing command

One my router I've done the following:
- configured f0/1 with ip address 10.1.5.2 255.255.255.252 command
- configured f0/1 with no shutdown command

On my L3 switch, the show ip route command shows a single connected route to 10.1.5.0. My router likewise show a connected route to 10.1.5.0. Both interfaces are in an up/up state. I erase startup config on both of these devices before attempting this to start from a fresh config, so no ACLs/port-security to speak of either.

What am I doing wrong here? Both the book I am using and the online resource I've viewed seem to make this a fairly simple process, but I can't seem to get it to work. My pings always fail.


SWITCH CONFIG ABBREVIATED:

L3SW#show runversion 15.0!!hostname Switch!!enable secret 5 $1$srhK$ATA3JLvpsMlmDOR3MRLla.!username Andrew secret 5 $1$M8q1$R7mCw0srOjlMkZ2Fnf/Oh.!ip subnet-zero!!power redundancy-mode redundant!vlan internal allocation policy ascending!!interface GigabitEthernet1/1 no switchport ip address 10.1.5.1 255.255.255.252!!interface Vlan1 no ip address!
show ip routeCodes: C - connected, S - static, R - RIP, M - mobile, B - BGP       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2       E1 - OSPF external type 1, E2 - OSPF external type 2       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2       ia - IS-IS inter area, * - candidate default, U - per-user static route       o - ODR, P - periodic downloaded static routeGateway of last resort is not set     10.0.0.0/30 is subnetted, 1 subnetsC       10.1.5.0 is directly connected, GigabitEthernet1/1
Interface              IP-Address      OK? Method Status                ProtocolVlan1                  unassigned      YES unset  down                  downVlan10                 10.1.10.1       YES manual down                  downFastEthernet1          unassigned      YES unset  down                  downGigabitEthernet1/1     10.1.5.1        YES manual up                    up
show ip int g1/1GigabitEthernet1/1 is up, line protocol is up  Internet address is 10.1.5.1/30  Broadcast address is 255.255.255.255  Address determined by setup command  MTU is 1500 bytes  Helper address is not set  Directed broadcast forwarding is disabled  Outgoing access list is not set  Inbound  access list is not set  Proxy ARP is enabled  Local Proxy ARP is disabled  Security level is default  Split horizon is enabled  ICMP redirects are always sent  ICMP unreachables are always sent  ICMP mask replies are never sent  IP fast switching is enabled  IP Flow switching is disabled  IP CEF switching is enabled  IP CEF switching turbo vector  IP Null turbo vector  IP multicast fast switching is enabled  IP multicast distributed fast switching is disabled  IP route-cache flags are Fast, CEF  Router Discovery is disabled  IP output packet accounting is disabled  IP access violation accounting is disabled  TCP/IP header compression is disabled  RTP/IP header compression is disabled  Probe proxy name replies are disabled  Policy routing is disabled  Network address translation is disabled  BGP Policy Mapping is disabled  Input features: MCI Check  WCCP Redirect outbound is disabled  WCCP Redirect inbound is disabled  WCCP Redirect exclude is disabled
show ip arpProtocol  Address          Age (min)  Hardware Addr   Type   InterfaceInternet  10.1.5.1                -   001e.f7ad.0bff  ARPA   GigabitEthernet1/1
show int g1/1GigabitEthernet1/1 is up, line protocol is up (connected)  Hardware is Gigabit Ethernet Port, address is 001e.f7ad.0bff (bia 001e.f7ad.0bff)  Internet address is 10.1.5.1/30  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,     reliability 255/255, txload 1/255, rxload 1/255  Encapsulation ARPA, loopback not set  Keepalive set (10 sec)  Full-duplex, 100Mb/s, link type is auto, media type is 10/100/1000-TX  input flow-control is off, output flow-control is off  ARP type: ARPA, ARP Timeout 04:00:00  Last input 00:00:15, output never, output hang never  Last clearing of "show interface" counters never  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0  Queueing strategy: fifo  Output queue: 0/40 (size/max)  5 minute input rate 0 bits/sec, 0 packets/sec  5 minute output rate 0 bits/sec, 0 packets/sec  L3 in Switched: ucast: 0 pkt, 0 bytes - mcast: 0 pkt, 0 bytes  L3 out Switched: ucast: 0 pkt, 0 bytes - mcast: 0 pkt, 0 bytes  IPv6 L3 in Switched: ucast: 0 pkt, 0 bytes - mcast: 0 pkt, 0 bytes  IPv6 L3 out Switched: ucast: 0 pkt, 0 bytes - mcast: 0 pkt, 0 bytes     1053 packets input, 117356 bytes, 0 no buffer     Received 221 broadcasts (0 IP multicasts)     0 runts, 0 giants, 0 throttles     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored     0 input packets with dribble condition detected     265 packets output, 82637 bytes, 0 underruns     0 output errors, 0 collisions, 1 interface resets     0 babbles, 0 late collision, 0 deferred     0 lost carrier, 0 no carrier     0 output buffer failures, 0 output buffers swapped out

ROUTER CONFIG

R3#show run!version 15.1!hostname Router!!enable secret 5 $1$82m/$ZHiJirn9b4KrvdR.pPOak/!!ip source-route!!ip cef!username Andrew secret 5 $1$JNt6$cTb107naEHNeLx6YTQ2up.!!interface FastEthernet0/1 ip address 10.1.5.2 255.255.255.252 duplex auto speed auto!
show ip routeCodes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2       E1 - OSPF external type 1, E2 - OSPF external type 2       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2       ia - IS-IS inter area, * - candidate default, U - per-user static route       o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP+ - replicated route, % - next hop overrideGateway of last resort is not set      10.0.0.0/8 is variably subnetted, 2 subnets, 2 masksC        10.1.5.0/30 is directly connected, FastEthernet0/1L        10.1.5.2/32 is directly connected, FastEthernet0/1
FastEthernet0/1 is up, line protocol is up  Internet address is 10.1.5.2/30  Broadcast address is 255.255.255.255  Address determined by setup command  MTU is 1500 bytes  Helper address is not set  Directed broadcast forwarding is disabled  Outgoing access list is not set  Inbound  access list is not set  Proxy ARP is enabled  Local Proxy ARP is disabled  Security level is default  Split horizon is enabled  ICMP redirects are always sent  ICMP unreachables are always sent  ICMP mask replies are never sent  IP fast switching is enabled  IP fast switching on the same interface is disabled  IP Flow switching is disabled  IP CEF switching is enabled  IP CEF switching turbo vector  IP multicast fast switching is enabled  IP multicast distributed fast switching is disabled  IP route-cache flags are Fast, CEF  Router Discovery is disabled  IP output packet accounting is disabled  IP access violation accounting is disabled  TCP/IP header compression is disabled  RTP/IP header compression is disabled  Policy routing is disabled  Network address translation is disabled  BGP Policy Mapping is disabled  Input features: MCI Check  WCCP Redirect outbound is disabled  WCCP Redirect inbound is disabled  WCCP Redirect exclude is disabled
show ip arpProtocol  Address          Age (min)  Hardware Addr   Type   InterfaceInternet  10.1.5.1                0   Incomplete      ARPAInternet  10.1.5.2                -   0025.845d.da09  ARPA   FastEthernet0/1
show int f0/1FastEthernet0/1 is up, line protocol is up  Hardware is MV96340 Ethernet, address is 0025.845d.da09 (bia 0025.845d.da09)  Internet address is 10.1.5.2/30  MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,     reliability 255/255, txload 1/255, rxload 1/255  Encapsulation ARPA, loopback not set  Keepalive set (10 sec)  Full-duplex, 100Mb/s, 100BaseTX/FX  ARP type: ARPA, ARP Timeout 04:00:00  Last input 00:00:08, output 00:00:04, output hang never  Last clearing of "show interface" counters never  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0  Queueing strategy: fifo  Output queue: 0/40 (size/max)  5 minute input rate 0 bits/sec, 0 packets/sec  5 minute output rate 0 bits/sec, 0 packets/sec     361 packets input, 71268 bytes     Received 361 broadcasts (0 IP multicasts)     0 runts, 0 giants, 0 throttles     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored     0 watchdog     0 input packets with dribble condition detected     1001 packets output, 111588 bytes, 0 underruns     0 output errors, 0 collisions, 6 interface resets     225 unknown protocol drops     0 babbles, 0 late collision, 0 deferred     7 lost carrier, 0 no carrier     0 output buffer failures, 0 output buffers swapped out

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